key stage mark scheme - maths, english and science ... · pdf filenational curriculum...
TRANSCRIPT
National curriculum assessments
Science tests
Mark scheme for Papers 1 and 2
2007
Sc
KEY STAGE
3TIERS
3–7
KS3 Sc MS1+2 Intro275657.qxp 17/1/07 10:05 am Page 1
Introduction
The test papers will be marked by external markers. The markers will follow the mark
scheme in this booklet, which is provided here to inform teachers.
This booklet includes the mark scheme for paper 1 and paper 2 in both tiers.
The structure of the mark scheme for tiers 3−−6 and 5−−7
The mark scheme for each question shows:
■ the teaching points from the key stage 3 programme of study
■ the marks available for each part of the question
■ the total marks available for the question
■ the answer or answers expected, indicated by an asterisk
■ additional guidance to assist markers in making professional judgements.
When a question appears in an identical form in both tiers, the answers to the
question are given only once in the mark scheme. For clarity, both question numbers
are given. The following example, from tier 3−6 paper 1 question 12 and from
tier 5−7 paper 1 question 4, illustrates this.
Where more than one answer is acceptable, this is indicated in the mark scheme by
‘any one from’. Each possible correct answer is marked with an asterisk. In some
cases, alternative answers are indicated by ‘or’.
________________________________________________________________________________________________________
2
Tier
3−−6
5−−7
Q No
12
4
Part Mark Answer Accept Additional guidance
a i
3/3a
a ii
3/3a
11
1
* oxygen* water
any one from* it prevents contact between
the steel or the car and oxygen or water
* it is waterproof or water runs off
accept ‘it prevents air getting tothe car’
accept ‘wax fills scratches or
chips where paint is damaged’
answers may be in eitherorder‘air’ is insufficient‘moisture’ or ‘dampness’ or
‘wet’ are insufficient
‘it forms a protective layer’ isinsufficient
2007 KS3 Science Mark Scheme Tiers 3−−6 and 5−−7 Introduction
___________________________________________________________________________________________________________
KS3 Sc MS1+2 Intro275657.qxp 17/1/07 10:05 am Page 2
In the following example from part b of tier 3−6 paper 1 question 15 and tier 5−7
paper 1 question 7, an answer giving ‘it has a longer orbit’ and ‘the Sun’s gravity is
less’ will be awarded two marks. However, an answer which gives ‘it has a longer
orbit’ and ‘it is further away’ will be given only one mark, as both points are correct
answers for the same mark.
In the following example, from part c of tier 5−7 paper 1 question 9, the statement in
bold type in the Additional guidance column is given in order to indicate the general
requirement of that part of the question.
In the Accept column there may be:
■ examples of answers which are acceptable, although they do not correspond exactly
to the expected answers
■ some examples of higher-level answers, which could be given by higher-attaining
pupils answering questions on the lower levels in the tier.
In the Additional guidance column there may be:
■ answers which are not acceptable
________________________________________________________________________________________________________
3
Part Mark Answer Accept Additional guidance
b
4/4c2 any two from
* it has a longer orbit
* it is further from the Sun
* the Sun’s gravity is less
* it is slower
accept ‘it has a bigger orbit’accept ‘it has a greaterdistance to cover’accept ‘it is further out’
accept ‘Mars is closer to theSun’accept ‘there is a smallergravitational pull on it’
‘it is further away’ or ‘it isfurther’ are insufficient
Part Mark Answer Accept Additional guidance
c
2/4a1
1
any one from* eye colour is inherited or
controlled by genes* eye colour is not affected by
environmental factors
any one from* weight and skin colour are
affected by environmental factors
* weight is affected by diet or
exercise and skin colour by the Sun
accept ‘weight and skin colourare not just controlled bygenes’
answers must refer to both
weight and skin colour
‘weight and skin colour arenot controlled by genes’ isinsufficient
2007 KS3 Science Mark Scheme Tiers 3−−6 and 5−−7 Introduction
___________________________________________________________________________________________________________
KS3 Sc MS1+2 Intro275657.qxp 17/1/07 10:05 am Page 3
■ a reminder, in questions involving calculations, that consequential marking may
be used
■ instructions on action in the event of consequential marking (see below)
■ guidance to markers where pupils have not followed the instructions in
the question.
Marking
The number of marks available for each part of a question, and the maximum number
of marks for the question as a whole, are shown on the question paper. Every part of a
question which has been attempted by a pupil will be marked and the mark for each
part recorded in the mark box alongside that part. Half marks will not be given in any
question.
The total number of marks awarded for all the parts of questions on a double page
will be written in the box at the bottom of the right-hand page. In some instances, this
will be the sum of marks awarded for two questions. The total number of marks
obtained on the paper will be recorded on the front of the test paper.
The total number of marks available is 180 in tier 3−6 and 150 in tier 5−7.
Using professional judgement in marking
The instructions given in the mark scheme will enable the markers to decide whether
pupils have correctly answered a particular question. However, there will be instances
where an answer given by a pupil does not correspond to any of the possible responses
shown in the mark scheme. In such cases, markers will apply their professional
judgement to decide if credit should be given. They will consider whether the response:
■ is equivalent to those listed
■ conveys the ideas underlying the question as outlined in the statement in bold typein the mark scheme, if one is given.
If any doubt persists, markers will consult their supervisors for guidance.
Marking misspellings of words
If a pupil misspells a word, markers will apply the following procedures:
■ if it is clear that the pupil has made a simple error, eg ‘tow’ for ‘two’ or ‘Son’ for
‘Sun’, then the incorrect spelling will be accepted and the mark awarded
■ if a pupil misspells a word copied from the text of the question or from a selection
given, and the new word does not have any inappropriate meaning, the incorrect
spelling will be accepted and the mark awarded
■ if specific scientific vocabulary is required in the answer, a misspelling must, in
order to be creditworthy, be a phonetic equivalent of the required word, with the
major syllables of the correct word represented in the answer.
________________________________________________________________________________________________________
4
2007 KS3 Science Mark Scheme Tiers 3−−6 and 5−−7 Introduction
___________________________________________________________________________________________________________
KS3 Sc MS1+2 Intro275657.qxp 17/1/07 10:05 am Page 4
Marking lists of alternative answers
In some instances, pupils give more than one answer to a single question. If any of the
answers given is incorrect, the mark will not be awarded, irrespective of the order in
which the answers are given. In some cases, a correct answer is given alongside other
answers which, while correct, would be insufficient for the mark. In these cases, the
mark will be given for the correct answer.
Marking questions containing calculations
Some questions require pupils to perform calculations. Where two marks are available,
they are advised to show their working. Pupils who do not show their working but
give the correct answer will be awarded full marks.
The result of one calculation may be required in order to carry out further
calculations. In such instances:
■ the term ‘consequential marking’ appears in the Additional guidance
■ a pupil’s result for the first calculation is treated as the starting point for the second
■ the pupil is awarded full credit for the second calculation if it is carried out
correctly, even if the result of the first calculation was wrong.
Marking answers given in the wrong place
In some cases, pupils may write correct answers in the wrong part of the question.
Markers will use professional judgement to decide whether a pupil has correctly
understood the question and simply written the answer in the wrong place. Similarly,
if pupils identify an answer by a cross or other indication when a tick is required,
they will be given credit for their responses.
In a planning question, if no answer is given in the expected place but the correct
answer is given in the drafting box, the mark(s) will be given.
Awarding levels
Level threshold tables, which show the mark ranges for the award of different levels,
will be available on the NAA website www.naa.org.uk/tests from Monday 25 June
2007. QCA will also send a copy to each school in July.
Schools will be notified of pupils’ results by means of a marksheet, which will be
returned to schools by the External Marking Agency with the pupils’ marked scripts.
The marksheet will include pupils’ scores on the test papers and the levels awarded.
The 2007 key stage 3 science tests and mark schemes were developed by Oxford
Cambridge and RSA Examinations (OCR) on behalf of QCA.________________________________________________________________________________________________________
5
2007 KS3 Science Mark Scheme Tiers 3−−6 and 5−−7 Introduction
___________________________________________________________________________________________________________
KS3 Sc MS1+2 Intro275657.qxp 17/1/07 10:05 am Page 5
Mark Allocation Grid: Tier 3−−6
TIER 3−−6 Paper 1 TIER 3−−6 Paper 2
2007 KS3 Science Mark Scheme Tiers 3−6 and 5−7 Introduction
___________________________________________________________________________________________________________
________________________________________________________________________________________________________
6
Q
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Total
Q
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Total
Sc1 Sc2 Sc3 Sc4
6
6
1 4
5
6
2 3
6
6
5
5
5
7
1 7
4
1 5
2 3
22 20 21 27
Sc1 Sc2 Sc3 Sc4
3 2
6
5
3
6
1 5
7
7
6
4
5
5
6
6
1 6
6
18 26 25 21
Total
P1 + 240 46 46 48
Overall
180
KS3 Sc MS1+2 Intro275657.qxp 17/1/07 10:05 am Page 6
Mark Allocation Grid: Tier 5−−7
TIER 5−−7 Paper 1 TIER 5−−7 Paper 2
The requirements of the Introduction to the Programme of Study apply across Sc1, Sc2, Sc3 and Sc4.
The Mark Allocation Grids on this pair of pages show the context of these questions in relation to Sc1, Sc2, Sc3 and Sc4.
2007 KS3 Science Mark Scheme Tiers 3−6 and 5−7 Introduction
___________________________________________________________________________________________________________
________________________________________________________________________________________________________
7
Q
1
2
3
4
5
6
7
8
9
10
11
12
13
Total
Q
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Total
Sc1 Sc2 Sc3 Sc4
5
5
5
7
1 7
4
1 5
2 3
6
4 3
2 4
5
6
16 20 21 18
Sc1 Sc2 Sc3 Sc4
6
4
5
5
6
6
1 6
6
5
5
4
1 5
5
3 2
20 19 16 20
Total
P1 + 236 39 37 38
Overall
150
KS3 Sc MS1+2 Intro275657.qxp 17/1/07 10:05 am Page 7
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3
−− 6 P
ap
er
On
e
____
____
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8
Tie
r
3−− 6
Q N
o
1
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
2/1a
2an
y tw
ofr
om*
hear
t*
lung
s*
win
dpip
e o
rtr
ache
a*
oeso
phag
us o
rgu
llet
acce
pt ‘b
lood
ves
sels
’or
‘art
erie
s’o
r‘v
eins
’
do n
ot
acce
pt‘b
ronc
hiol
e’
b 2/2i
1an
y o
ne
from
* so
the
lung
s ca
n ex
pand
or
get
bigg
er*
so w
e ca
n br
eath
e*
so w
e ca
n ta
ke in
air
or
oxyg
enac
cept
‘so
the
pres
sure
dro
ps’
refe
renc
es t
o g
row
th a
re in
suff
icie
nt
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 8
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3
−− 6 P
ap
er
On
e
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____
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9
Tie
r
3−− 6
Q N
o
1
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
c
2/2b
2/2g
2/2i
1 1 1
* * *
ifm
ore
than
one
line
is d
raw
n fr
om a
ny o
rgan
syst
em,
awar
d no
cre
dit
for
tha
t or
gan
syst
em
To
tal
6
dige
stio
n of
food
repr
oduc
tion
cont
rol o
fth
e bo
dy
taki
ng in
oxy
gen
from
th
e ai
r
mov
emen
t of
the
body
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 9
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3
−− 6 P
ap
er
On
e
____
____
____
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____
____
____
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____
____
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10
Tie
r
3−− 6
Q N
o
2
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
1/2g
1*
25ac
cept
‘2.5
cm
’
b
1/2k
1*
21−2
5ac
cept
2.1
cm
−2.5
cm
c i
1/2i
c i
i
1/2i
1 1
* nu
mbe
rs f
rom
1 t
o 5
writ
ten
on t
he y
-axi
s
* ba
r dr
awn
in t
he c
hart
to
3
acce
pt n
umbe
rs f
rom
1 t
o 4
writ
ten
on t
he y
-axi
s
give
cre
dit
for
a co
rrec
tly d
raw
n ba
r to
3 s
quar
esw
hen
the
axis
is n
ot
labe
lled
or
is la
belle
din
corr
ectly
give
cre
dit
for
a ba
r dr
awn
cons
iste
nt w
ith t
hela
belli
ng o
n th
e ax
is
d
1/2o
2*
true
fals
e
can
not
tell
ifal
l fou
r ro
ws
are
corr
ect,
awar
d tw
o m
arks
ifth
ree
row
s ar
e co
rrec
t,aw
ard
one
mar
kif
mor
e th
an o
ne b
ox is
tic
ked
in a
ny r
ow,
awar
dno
cre
dit
for
tha
t ro
w
To
tal
6
�
�
�
�
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 10
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3
−− 6 P
ap
er
On
e
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
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____
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____
____
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___
11
Tie
r
3−− 6
Q N
o
3
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
1/2k
1*
fat
acce
pt ‘c
ream
’
b i
2/2d
b i
i
2/2c
1 1
* ca
lciu
m
any
on
efr
om*
in t
he b
lood
* in
blo
od v
esse
lsac
cept
‘pla
sma’
acce
pt a
nam
ed b
lood
ves
sel
acce
pt ‘a
rter
ies’
or
‘vei
ns’o
r‘c
apill
arie
s’o
r
‘circ
ula
tory
sys
tem
’ac
cept
‘blo
od c
ells
’or
‘red
cells
’ac
cept
‘the
hea
rt p
umps
blo
od’
‘pum
ped
by t
he h
eart
’is
insu
ffic
ient
c i
2/4b
c i
i
2/2n
1 1
* m
amm
als
�
* T
he m
ilk c
onta
ins
antib
odie
s.�
ifm
ore
than
one
box
is t
icke
d,aw
ard
no m
ark
ifm
ore
than
one
box
is t
icke
d,aw
ard
no m
ark
To
tal
5
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 11
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3
−− 6 P
ap
er
On
e
____
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12
Tie
r
3−− 6
Q N
o
4
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
3/1h
1an
y o
ne
from
* in
k di
ssol
ves
in w
ate
r*
ink
wou
ld s
mud
ge o
rru
n o
rm
ove
up t
he
filte
r pa
per
* pe
ncil
does
not
dis
solv
e in
wa
ter
acce
pt ‘i
nk d
isso
lves
’ac
cept
‘ink
exp
ands
’
acce
pt ‘p
enci
l doe
s no
t sm
udge
’
b i
3/1h
b i
i
3/1h
1 1
* ye
llow
* br
own
c
3/1h
1*
red
d
3/1h
1*
chro
ma
tog
raph
y �
ifm
ore
than
one
box
is t
icke
d,aw
ard
no m
ark
To
tal
5
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 12
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3
−− 6 P
ap
er
On
e
____
____
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____
____
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____
____
____
____
____
____
____
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13
Tie
r
3−− 6
Q N
o
5
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
1/2a
1 1*
Zoe
�
any
on
efr
om*
best
need
s to
be
defin
ed
* be
stis
not
obs
erva
ble
or
mea
sura
ble
* be
stis
sub
ject
ive
acce
pt ‘b
est
need
s to
be
desc
ribed
’ac
cept
‘you
do
not
know
wha
t be
stm
eans
’ac
cept
‘it
is n
ot d
oabl
e’ac
cept
‘bes
tis
an
opin
ion
or
judg
emen
t’ac
cept
‘bes
tis
not
cle
ar’
ifm
ore
than
one
box
is t
icke
d,aw
ard
no m
ark
b i
1/2d
b i
i
1/2e
1 1
any
on
efr
om*
use
the
sam
e ar
ea o
fm
ate
rial e
ach
time
* us
e th
e sa
me
volu
me
ofw
ate
r
any
on
efr
om*
mea
surin
g cy
linde
r
* st
opcl
ock
or
stop
wa
tch
acce
pt ‘s
ame
amou
nt o
fm
ate
rial’
acce
pt ‘s
ame
size
of
ruck
sack
’ac
cept
‘sam
e am
ount
of
wa
ter’
acce
pt ‘s
ame
liqui
d’ac
cept
‘sam
e tim
ing’
acce
pt ‘a
llow
the
wa
ter
to d
rip t
hrou
gh t
hem
ate
rial f
or t
he s
ame
leng
th o
ftim
e’ac
cept
‘kee
p th
e te
mpe
ratu
re t
he s
ame’
acce
pt ‘m
easu
ring
beak
er’
acce
pt ‘c
lock
’or
‘tim
er’o
r‘w
atc
h’
do n
ot
acce
pt‘d
o it
mor
e th
an o
nce’
do n
ot
acce
pt‘c
ylin
der’
or
‘mea
surin
g tu
be’o
r
‘mea
surin
g ju
g’
c
1/2k
1 1
* B
�
* th
e sm
alle
st v
olum
e of
wa
ter
pass
es t
hrou
gh
the
ma
teria
lac
cept
‘onl
y 5
cm3
pass
ed t
hrou
gh’
acce
pt ‘l
ess
wa
ter
pass
ed t
hrou
gh’
acce
pt ‘n
ot a
s m
uch
wa
ter
gets
thr
ough
’
ifm
ore
than
one
box
is t
icke
d,aw
ard
no m
ark
an
sw
ers
mu
st
inclu
de o
r im
ply
a c
om
pari
so
n
‘5 c
m3
pass
ed t
hrou
gh’i
s in
suff
icie
nt
‘not
muc
h w
ate
r ge
ts t
hrou
gh’i
s in
suff
icie
nt
To
tal
6
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 13
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3
−− 6 P
ap
er
On
e
____
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14
Tie
r
3−− 6
Q N
o
6
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
4/2e
1*
it w
ill g
o do
wn
acce
pt ‘i
t w
ill t
ip a
ntic
lock
wis
e’ac
cept
‘it
will
tip
tow
ards
A’
acce
pt ‘e
nd B
will
go
up’
‘tip’
is in
suff
icie
nt
b 4/2f
1*
all
th
ree
balls
are
req
uire
d fo
r th
e m
ark
igno
re a
ny s
hadi
ng a
nd s
ize
c 4/2f
1*
100
d i
3/1d
d i
i
3/1d
1 1
* ca
rbon
�
any
on
efr
om*
stee
l con
tain
s iro
n*
bras
s do
es n
ot c
onta
in ir
on*
iron
is m
agne
tic o
rst
icks
to
a m
agne
t*
copp
er a
nd z
inc
are
not
mag
netic
or
will
not
st
ick
to a
mag
net
acce
pt ‘s
teel
con
tain
s iro
n an
d ca
rbon
’
ifm
ore
than
one
box
is t
icke
d,aw
ard
no m
ark
the a
nsw
er
mu
st
rela
te t
o t
he e
lem
en
ts
‘ste
el is
mag
netic
’is
insu
ffic
ient
‘cop
per
is n
ot m
agne
tic’i
s in
suff
icie
nt‘z
inc
is n
ot m
agne
tic’i
s in
suff
icie
nt‘b
rass
is n
ot m
agne
tic’i
s in
suff
icie
nt‘c
oppe
r an
d zi
nc a
re n
ot m
agne
ts’i
s in
suff
icie
nt
To
tal
5
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 14
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3
−− 6 P
ap
er
On
e
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
___
15
Tie
r
3−− 6
Q N
o
7
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
4/5a
1 1*
coal
* ga
sac
cept
‘coa
l fire
’or
‘A’
acce
pt ‘g
as b
oile
r’o
r‘D
’ac
cept
‘pet
rol’
or
‘pet
rol g
ener
ato
r’o
r‘C
’or
‘oil’
answ
ers
may
be
in e
ither
ord
er‘fi
re’i
s in
suff
icie
nt‘b
oile
r’is
insu
ffic
ient
‘gen
era
tor’
is in
suff
icie
nt
b i
4/5a
b i
i
4/5a
1 1
* th
e S
un
any
on
efr
om*
it is
dar
k*
no li
ght
* th
e S
un h
as s
et
acce
pt ‘s
olar
ene
rgy’
or
‘sol
ar’
acce
pt ‘l
ight
’or
‘sun
light
’
acce
pt ‘i
t ne
eds
light
’ac
cept
‘no
Sun
’
refe
renc
es t
o he
at
are
insu
ffic
ient
refe
renc
es t
o he
at
are
insu
ffic
ient
c
4/5a
1*
win
dac
cept
‘mov
ing
air’
or
‘air’
acce
pt ‘a
ir cu
rren
ts’
d
4/5a
1an
y o
ne
from
* S
un o
rso
lar
ener
gy*
wav
es*
win
d
acce
pt ‘s
olar
pan
el’o
r‘E
’ac
cept
‘wav
e tu
rbin
e’o
r‘F
’ac
cept
‘win
d tu
rbin
e’o
r‘tu
rbin
e’o
r‘B
’‘w
ate
r’is
insu
ffic
ient
To
tal
6
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 15
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3
−− 6 P
ap
er
On
e
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
___
16
Tie
r
3−− 6
Q N
o
8
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
4/1a
1*
acce
pt a
ba
ttery
dra
wn
as‘
’
‘
’
all
th
ree
sym
bols
mus
t be
con
nect
ed in
ser
ies
all
th
ree
sym
bols
mus
t be
dra
wn
corr
ectly
do n
ot
acce
pta
switc
h dr
awn
as
do n
ot
acce
pta
batte
ry d
raw
n as
do n
ot
acce
pta
mot
or d
raw
n as
b i
4/1c
b i
i
4/5g
1 1 1
* th
e ba
ttery
or
cell(
s)
* he
at
* so
und
acce
pt ‘b
atte
ries’
acce
pt ‘t
herm
al’
answ
ers
may
be
in e
ither
ord
er
c i
4/1b
c i
i
4/1b
1 1
* it
turn
ed m
ore
slow
ly
* it
was
brig
hter
acce
pt ‘n
ot a
s m
uch
ener
gy’
acce
pt ‘i
t w
as le
ss p
ower
ful’
acce
pt ‘i
t do
es n
ot w
ork
as w
ell’
acce
pt ‘i
t w
ould
sto
p’o
r‘it
wou
ld n
ot g
o ro
und’
acce
pt ‘b
lew
it’o
r‘it
wen
t ou
t’ac
cept
‘it
beca
me
hotte
r’o
r‘it
hea
ted
up’
‘it h
eats
up’
is in
suff
icie
nt
To
tal
6
Mo
r
M
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 16
2007
KS
3 S
cien
ce M
ark
Sch
eme
T
iers
3−− 6
an
d 5
−− 7 P
ap
er
On
e
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
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____
____
____
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___
17
Tie
r
3−− 6
5−− 7
Q N
o
9 1
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
2/2h
1*
9
b i
2/2h
b i
i
2/2h
1 1
any
on
efr
om*
it pr
otec
ts t
he b
aby
* it
help
s to
mai
ntai
n a
cons
tant
tem
pera
ture
* it
allo
ws
the
baby
to
mov
e
* m
uscl
es c
ontr
act
acce
pt ‘i
t ke
eps
it sa
fe’
acce
pt ‘i
t ke
eps
the
baby
war
m’
acce
pt ‘i
t ab
sorb
s sh
ocks
’ac
cept
‘it
prot
ects
aga
inst
infe
ctio
n o
rdi
seas
e’
acce
pt ‘c
ontr
actio
ns’
‘the
uter
us o
rit
cont
ract
s’is
insu
ffic
ient
c
2/2h
1an
y o
ne
from
* (t
hrou
gh t
he)
plac
enta
* (t
hrou
gh t
he)
umbi
lical
cor
d*
(fro
m t
he)
mot
her’s
blo
od
igno
re r
efer
ence
s to
foo
d
‘thro
ugh
the
bloo
d’is
insu
ffic
ient
‘it g
ets
ever
ythi
ng f
rom
the
mot
her’
is in
suff
icie
ntdo
no
tac
cept
‘the
mot
her
brea
thes
for
the
chi
ld’
d 2/2i
1*
alve
olus
‘air
sac’
is in
suff
icie
nt
To
tal
5
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 17
2007
KS
3 S
cien
ce M
ark
Sch
eme
T
iers
3−− 6
an
d 5
−− 7 P
ap
er
On
e
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____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
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____
____
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____
___
18
Tie
r
3−− 6
5−− 7
Q N
o
10 2
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
2/5e
1*
answ
ers
mus
t be
in t
he c
orre
ct o
rder
all
th
ree
answ
ers
are
requ
ired
for
the
mar
k
b 2/5f
1*
few
er f
oxes
or
they
dec
reas
e
any
on
efr
om*
few
er p
artr
idge
s (f
or f
oxes
to
eat)
*
the
pois
on g
ets
into
the
foo
d ch
ain
* th
ey m
ove
else
whe
re t
o fin
d fo
od
acce
pt ‘t
here
wou
ld b
e le
ss’
acce
pt ‘t
hey
wou
ld d
rop
or
go d
own’
acce
pt ‘l
ess
food
’ac
cept
‘par
trid
ges
wou
ld b
e po
ison
ed’
acce
pt ‘s
ome
die
ofst
arva
tion’
bo
thth
e an
swer
and
the
cor
rect
exp
lana
tion
are
requ
ired
for
the
mar
kcr
edit
both
cor
rect
ans
wer
s w
ritte
n in
the
sam
esp
ace
‘foxe
s di
e’is
insu
ffic
ient
do n
ot
acce
pt‘th
e ch
emic
als
pois
on t
he f
oxes
’do
no
tac
cept
‘they
all
die
ofst
arva
tion’
do n
ot
acce
pt‘th
ey h
ave
noth
ing
to e
at’
c
2/5d
1an
y o
ne
from
* g
rea
ter
chan
ce o
fsu
rviv
al*
mor
e w
ould
sur
vive
acce
pt ‘t
he m
ore
eggs
the
y la
y th
e m
ore
part
ridge
s th
ere
will
be’
acce
pt ‘s
ome
eggs
will
be
dam
aged
or
eate
n’ac
cept
‘som
e eg
gs w
ill n
ot h
atc
h’ac
cept
‘you
ng p
artr
idge
s o
rch
icks
may
be
eate
n o
rtr
ampl
ed o
n o
rdi
e’ac
cept
‘so
they
will
not
bec
ome
extin
ct o
rdi
e ou
t’
‘par
trid
ges
will
die
’is
insu
ffic
ient
fox
partridge
plant
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 18
2007
KS
3 S
cien
ce M
ark
Sch
eme
T
iers
3−− 6
an
d 5
−− 7 P
ap
er
On
e
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____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
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____
____
____
____
____
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___
19
Tie
r
3−− 6
5−− 7
Q N
o
10 2
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
d
2/5a
2an
y tw
ofr
om*
ther
e w
ould
be
a g
rea
ter
varie
ty o
fpl
ants
* m
ore
plan
ts o
rw
eeds
* m
ore
inse
cts
* m
ore
nest
ing
plac
es*
mor
e co
ver
* th
e pa
rtrid
ges
are
not
pois
oned
acce
pt ‘t
here
wou
ld b
e pl
ants
to
eat’
acce
pt ‘t
here
wou
ld b
e in
sect
s to
ea
t’
acce
pt ‘p
rote
ctio
n fr
om p
reda
tors
’
acce
pt ‘m
ore
food
’or
‘they
wou
ld h
ave
food
’or
‘par
trid
ges
will
com
e to
fee
d’if
none
of
the
first
thre
e m
arki
ng p
oint
s ar
e gi
ven
do n
ot
acce
pt‘th
ey h
ad n
ot b
een
spra
yed
with
chem
ical
s’
To
tal
5
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 19
2007
KS
3 S
cien
ce M
ark
Sch
eme
T
iers
3−− 6
an
d 5
−− 7 P
ap
er
On
e
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____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
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____
____
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____
____
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___
20
Tie
r
3−− 6
5−− 7
Q N
o
11 3
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
1/2a
2an
y tw
ofr
om*
he u
sed
the
sam
e am
ount
of
polle
n
* he
mea
sure
d th
e co
ncen
tra
tion
ofth
e so
lutio
ns
or
he u
sed
a ra
nge
ofst
reng
ths
ofso
lutio
n
* he
obs
erve
d th
e po
llen
gra
ins
afte
r on
e ho
ur
* he
wor
ked
out
the
perc
enta
ge w
hich
ge
rmin
ate
d
acce
pt ‘h
e us
ed t
he s
ame
num
ber
ofpo
llen
gra
ins’
or
‘he
cont
rolle
d th
e nu
mbe
r of
polle
ng
rain
s’ac
cept
‘he
has
give
n pe
rcen
tage
s’ac
cept
‘he
used
a r
ange
of
suga
r so
lutio
ns’
acce
pt ‘h
e us
ed e
xact
am
ount
s’ac
cept
‘he
look
ed a
t th
em a
fter
one
hour
’or
‘he
kept
the
tim
e th
e sa
me’
acce
pt ‘m
ore
deta
il’o
r‘m
ore
prec
ise’
‘mor
e ac
cura
te’i
s in
suff
icie
nt‘it
is a
fai
r te
st’i
s in
suff
icie
ntac
cept
ans
wer
s fo
rmul
ate
d in
ter
ms
ofw
hat
Am
y’s
plan
doe
s no
t do
b
1/2d
1*
the
conc
entr
atio
n of
suga
r so
lutio
nac
cept
‘str
engt
h of
solu
tion’
acce
pt ‘d
iffer
ent
suga
r so
lutio
ns’
acce
pt ‘t
he s
ugar
sol
utio
n’ac
cept
‘the
am
ount
or
perc
enta
ge o
fsu
gar’
do n
ot
acce
pt‘th
e am
ount
of
suga
r so
lutio
n’
c 1/2i
1*
a po
int
at
(20,
10)
plot
ted
to ±
half
a sm
all
squa
re
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 20
2007
KS
3 S
cien
ce M
ark
Sch
eme
T
iers
3−− 6
an
d 5
−− 7 P
ap
er
On
e
Tie
r
3−− 6
5−− 7
Q N
o
11 3
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
d
1/2o
1
* no
�
beca
use
the
germ
ina
tion
rate
dec
reas
es a
fter
the
conc
entr
atio
n is
10%
or
* ye
s �
beca
use
the
germ
ina
tion
rate
incr
ease
s up
to
10%
sug
ar s
olut
ion
(but
the
n st
arts
to
fall)
acce
pt ‘b
ecau
se t
he r
esul
ts g
o do
wn’
acce
pt ‘b
ecau
se t
he g
raph
sho
ws
a pe
ak o
rdo
esno
t co
ntin
ue t
o ris
e’ac
cept
‘it
only
ris
es u
p to
10%
or
at
first
’
do n
ot
acce
ptfo
r ei
ther
‘yes
’or
‘no’
read
ing
off
one
poin
t in
the
cha
rtif
both
box
es a
re t
icke
d,aw
ard
no m
ark
ifbo
th b
oxes
are
tic
ked,
awar
d no
mar
kdo
no
tac
cept
‘the
gre
ate
r th
e co
ncen
tra
tion
the
few
er g
rain
s ge
rmin
ate
d’
(ifbo
th b
oxes
are
tic
ked
an
dth
e re
ason
giv
enex
plai
ns w
hy b
oth
coul
d be
cor
rect
,a
mar
k m
aybe
aw
arde
d)
To
tal
5
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
___
21
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 21
2007
KS
3 S
cien
ce M
ark
Sch
eme
T
iers
3−− 6
an
d 5
−− 7 P
ap
er
On
e
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
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____
____
____
____
___
22
Tie
r
3−− 6
5−− 7
Q N
o
12 4
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a i
3/3a
a i
i
3/3a
a i
ii
3/3a
1 1 1 1
* ox
ygen
* w
ate
r
any
on
efr
om
* it
prev
ents
con
tact
bet
wee
n th
e st
eel o
rth
e ca
r an
d ox
ygen
or
wa
ter
* it
is w
ate
rpro
ofo
rw
ate
r ru
ns o
ff
any
on
efr
om*
pain
t*
chro
me
acce
pt ‘i
t pr
even
ts a
ir ge
tting
to
the
car’
acce
pt ‘w
ax f
ills
scra
tche
s o
rch
ips
whe
re p
aint
is
dam
aged
’
acce
pt ‘t
hey
are
coa
ted
in z
inc’
or
‘they
are
galv
anis
ed’
acce
pt ‘p
olis
h’
answ
ers
may
be
in e
ither
ord
er‘a
ir’is
insu
ffic
ient
‘moi
stur
e’o
r‘d
ampn
ess’
or
‘wet
’are
insu
ffic
ient
‘it f
orm
s a
prot
ectiv
e la
yer’
is in
suff
icie
nt
‘rus
t tr
eatm
ent’
is in
suff
icie
nt‘c
over
it’i
s in
suff
icie
nt
b
3/3g
1*
acid
rai
nac
cept
‘sul
phur
dio
xide
’ac
cept
‘oxi
des
ofni
trog
en’
acce
pt ‘c
ar e
xhau
st f
umes
’ac
cept
‘bur
ning
fos
sil f
uels
’ac
cept
‘sea
air’
or
‘sal
ty a
ir’o
r‘s
alt’
‘car
bon
diox
ide’
is in
suff
icie
nt
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 22
2007
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ce M
ark
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eme
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d 5
−− 7 P
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23
Tie
r
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Q N
o
12 4
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
c i
3/1b
c i
i
3/1b
1 1
* ga
s:pa
rtic
les
rand
omly
arr
ange
d an
d m
ost
no
t
touc
hing
* so
lid:
part
icle
s re
gula
rly
arra
nged
and
all
touc
hing
acce
pt b
lack
sha
ded
circ
les
ifdr
awn
corr
ectly
acce
pt f
ewer
or
mor
e th
an 8
circ
les
ifth
ear
rang
emen
t is
cle
ar
acce
pt w
hite
circ
les
ifdr
awn
corr
ectly
acce
pt 2
row
s of
part
icle
s w
ith a
t le
ast
2pa
rtic
les
in t
he s
econ
d ro
wac
cept
few
er o
rm
ore
than
8 c
ircle
s if
a re
gula
rar
rang
emen
t is
cle
ar
igno
re a
rrow
s a
ttach
ed t
o ci
rcle
s
igno
re lo
catio
n of
circ
les
in b
oxdo
no
tac
cept
a si
ngle
row
of
circ
les
To
tal
7
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 23
2007
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3 S
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ce M
ark
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eme
T
iers
3−− 6
an
d 5
−− 7 P
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er
On
e
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24
Tie
r
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5−− 7
Q N
o
13 5
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
1/2m
3/2e
1an
y o
ne
from
* it
abso
rbed
wa
ter
* its
mas
s o
rw
eigh
t in
crea
sed
acce
pt ‘i
t so
aks
up w
ate
r’ac
cept
‘the
mas
s o
rw
eigh
t of
the
gra
nite
or
mar
ble
did
not
incr
ease
or
chan
ge’
‘gra
nite
or
mar
ble
did
not
chan
ge’i
s in
suff
icie
nt
b i
3/2d
b i
i
3/2d
1 1
any
on
efr
om
* it
wou
ld c
rack
* it
wou
ld c
rum
ble
or
brea
k up
* w
eath
erin
g
acce
pt ‘t
he g
rain
s w
ould
mov
e ap
art’
acce
pt ‘f
reez
e-th
aw’
acce
pt ‘e
rosi
on’
c
3/3g
1an
y o
ne
from
* g
rani
te w
ould
not
rea
ct w
ith a
cid
rain
* m
arbl
e re
acts
with
aci
d ra
in
acce
pt ‘g
rani
te o
rit
is n
ot a
ffec
ted
by a
cid
rain
or
acid
’ac
cept
‘gra
nite
wou
ld n
ot e
rode
or
crum
ble
or
corr
ode’
acce
pt ‘m
arbl
e is
aff
ecte
d by
aci
d ra
in o
rra
in’
acce
pt ‘m
arbl
e w
ould
ero
de’
acce
pt ‘r
ain
or
pollu
tion
mig
ht h
ave
acid
in it
’
‘gra
nite
doe
s no
t re
act
with
air
pollu
tion’
isin
suff
icie
nt
do n
ot
acce
pt‘it
wou
ld e
rode
’
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 24
2007
KS
3 S
cien
ce M
ark
Sch
eme
T
iers
3−− 6
an
d 5
−− 7 P
ap
er
On
e
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25
Tie
r
3−− 6
5−− 7
Q N
o
13 5
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
d i
3/2f
d i
i
3/2f
2 2
* *
ifal
l thr
ee li
nes
are
corr
ect,
awar
d tw
o m
arks
ifon
e o
rtw
o lin
es a
re c
orre
ct,
awar
d on
e m
ark
ifm
ore
than
one
line
is d
raw
n fr
om a
nam
e of
aro
ck,
do n
ot c
redi
t th
at
line
ifal
l thr
ee li
nes
are
corr
ect,
awar
d tw
o m
arks
ifon
e o
rtw
o lin
es a
re c
orre
ct,
awar
d on
e m
ark
ifm
ore
than
one
line
is d
raw
n fr
om a
gro
up o
fro
cks,
do n
ot c
redi
t th
at
line
To
tal
8
part
icle
s ar
e de
posi
ted
in la
yers
form
ed w
hen
mag
ma
cool
s
the
effe
ct o
fhi
ghte
mpe
ratu
re a
ndpr
essu
re o
n lim
esto
nese
dim
enta
ry
igne
ous
met
amor
phic
sand
ston
e
mar
ble
met
amor
phic
igne
ous
gra
nite
sedi
men
tary
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 25
2007
KS
3 S
cien
ce M
ark
Sch
eme
T
iers
3−− 6
an
d 5
−− 7 P
ap
er
On
e
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26
Tie
r
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Q N
o
14 6
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
4/3c
1*
65 it is
diff
eren
t fr
om t
he a
ngle
of
inci
denc
e o
ral
l th
e ot
hers
are
the
sam
e
acce
pt ‘n
umbe
r 4’
or
‘the
four
th’
acce
pt ‘i
t is
not
60°
’or
‘it s
houl
d be
60°
’ac
cept
‘the
ang
le o
fre
flect
ion
and
the
angl
e of
inci
denc
e sh
ould
be
the
sam
e’ac
cept
‘it
is 5
°ou
t’ac
cept
‘the
y ar
e no
t th
e sa
me’
bo
thth
e an
swer
and
the
cor
rect
exp
lana
tion
are
requ
ired
for
the
mar
kaw
ard
a m
ark
for
‘60’
ifth
e ex
plan
atio
n is
cor
rect
‘they
go
up in
ten
s’is
insu
ffic
ient
‘it d
oes
not
fit t
he p
atte
rn’i
s in
suff
icie
nt
b i
4/3d
b i
i
4/3d
1 1
* a
num
ber
from
30
to 3
2
* g
rea
ter
than
acce
pt ‘g
rea
ter’
or
‘big
ger’
c
4/3d
1*
acce
pt a
con
tinuo
us s
trai
ght
line
tha
t be
nds
away
fro
m t
he n
orm
alac
cept
a li
ne w
ithou
t an
arr
ow
the
ray
need
not
be
para
llel t
o th
e in
cide
nt r
ay
To
tal
4
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 26
2007
KS
3 S
cien
ce M
ark
Sch
eme
T
iers
3−− 6
an
d 5
−− 7 P
ap
er
On
e
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27
Tie
r
3−− 6
5−− 7
Q N
o
15 7
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
4/4b
1 1*
X:
the
Sun
* Y
:M
ercu
ry
b
4/4c
2an
y tw
ofr
om*
it ha
s a
long
er o
rbit
* it
is f
urth
er f
rom
the
Sun
* th
e S
un’s
gra
vity
is le
ss*
it is
slo
wer
acce
pt ‘i
t ha
s a
bigg
er o
rbit’
acce
pt ‘i
t ha
s a
gre
ate
r di
stan
ce t
o co
ver’
acce
pt ‘i
t is
fur
ther
out
’ac
cept
‘Mar
s is
clo
ser
to t
he S
un’
acce
pt ‘t
here
is a
sm
alle
r g
ravi
tatio
nal p
ull o
n it’
‘it is
fur
ther
aw
ay’o
r‘it
is f
urth
er’a
re in
suff
icie
nt
c i
4/4c
c i
i
1/2k
4/4c
1 1
any
on
efr
om*
the
orbi
t tim
es w
ere
the
sam
e*
it ca
me
at
regu
lar
inte
rval
s*
they
saw
it e
very
76
year
s
* 20
62
acce
pt ‘h
e to
ok 1
531
from
160
7 an
d 16
07 f
rom
1683
’
To
tal
6
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 27
2007
KS
3 S
cien
ce M
ark
Sch
eme
T
iers
3−− 6
an
d 5
−− 7 P
ap
er
On
e
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____
____
____
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____
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28
Tie
r
3−− 6
5−− 7
Q N
o
16 8
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a 4/1f
1*
both
pic
ked
up t
he s
ame
num
ber
or
four
pa
per-
clip
sac
cept
‘the
y bo
th p
icke
d up
the
sam
e nu
mbe
r’ac
cept
‘sam
e am
ount
of
pape
r-cl
ips’
acce
pt ‘t
here
wer
e 5
out
of9
pape
r-cl
ips
left
for
both
’ac
cept
‘the
sam
e m
ass
ofpa
per-
clip
s’
‘they
hol
d th
e sa
me
clip
s’is
insu
ffic
ient
b 4/1f
1an
y o
ne
from
* it
does
not
sta
y m
agne
tised
* it
can
be t
urne
d of
f*
obje
cts
do n
ot s
tay
attr
acte
d to
it*
iron
lose
s its
mag
netis
m*
stee
l sta
ys m
agne
tised
acce
pt ‘y
ou c
anno
t tu
rn s
teel
off
’
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 28
2007
KS
3 S
cien
ce M
ark
Sch
eme
T
iers
3−− 6
an
d 5
−− 7 P
ap
er
On
e
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
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____
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29
Tie
r
3−− 6
5−− 7
Q N
o
16 8
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
c i
1/2j
4/1f
c i
i
1/2j
4/1f
c i
ii
4/1f
1 1 1
any
on
efr
om*
the
gre
ate
r th
e di
stan
ce t
he lo
wer
the
rea
ding
* th
e fu
rthe
r aw
ay t
he s
mal
ler
the
read
ing
* th
e g
rea
ter
the
curr
ent
the
stro
nger
the
el
ectr
omag
net
any
on
efr
om*
chan
ge t
he n
umbe
r of
turn
s
* ch
ange
the
thi
ckne
ss o
fth
e w
ire*
chan
ge t
he d
iam
eter
of
the
core
acce
pt t
he c
onve
rse
acce
pt ‘a
t bi
g di
stan
ces
the
field
is w
eake
r’o
rth
eco
nver
seac
cept
‘at
50 m
m t
he r
eadi
ng is
low
er’
acce
pt t
he c
onve
rse
acce
pt ‘u
se m
ore
coils
’ac
cept
‘use
few
er o
rle
ss c
oils
’ac
cept
‘put
the
coi
ls c
lose
r to
geth
er’o
rth
eco
nver
seac
cept
‘cha
nge
the
met
al o
fth
e co
ils’
acce
pt ‘u
se a
diff
eren
t si
zed
core
’ac
cept
‘use
nic
kel o
rco
balt
core
’ac
cept
‘use
a d
iffer
ent
core
’
do n
ot
acce
pt‘th
e bi
gger
the
dis
tanc
e th
esm
alle
r th
e am
ps o
rcu
rren
t’
‘use
big
ger
coils
’is
insu
ffic
ient
‘use
mor
e w
ire’i
s in
suff
icie
nt
do n
ot
acce
pt‘a
dd m
ore
batte
ries’
To
tal
5
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 29
2007
KS
3 S
cien
ce M
ark
Sch
eme
T
ier
5−− 7
Pa
per
On
e
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____
____
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____
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____
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30
Tie
r
5−− 7
Q N
o
9
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a i
2/4a
a i
i
2/4a
1 1 1
* ge
nes
or
DN
A o
rch
rom
osom
es*
in g
amet
es o
rse
x ce
lls o
reg
gs o
rsp
erm
* th
ey h
ave
gene
s o
rD
NA
or
chro
mos
omes
fro
m
both
par
ents
acce
pt ‘a
t fe
rtili
satio
n’
acce
pt ‘t
hey
have
gen
etic
info
rma
tion
from
bot
hpa
rent
s’ac
cept
‘fro
m e
ggs
and
sper
m’
‘in t
he n
ucle
us’i
s in
suff
icie
nt
b
2/4a
1*
they
hav
e th
e sa
me
gene
tic in
form
atio
n o
r
gene
s o
rD
NA
or
chro
mos
omes
acce
pt ‘t
hey
are
from
the
sam
e eg
g an
d sa
me
sper
m’
acce
pt ‘t
he f
ertil
ised
egg
or
zygo
te s
plit
in t
wo’
acce
pt ‘t
hey
are
from
the
sam
e fe
rtili
sed
egg’
‘from
the
sam
e eg
g’o
r‘fr
om t
he s
ame
sper
m’i
sin
suff
icie
nt
acce
pt r
efer
ence
s to
the
egg
div
idin
g if
the
answ
er m
akes
cle
ar t
hat
this
is a
fter
fert
ilisa
tion
eg ‘t
he e
gg d
ivid
es a
fter
it ha
s jo
ined
with
asp
erm
’‘th
e eg
g di
vide
s in
the
ute
rus’
is in
suff
icie
nt
c
2/4a
1 1
any
on
efr
om*
eye
colo
ur is
inhe
rited
or
cont
rolle
d by
gen
es*
eye
colo
ur is
not
aff
ecte
d by
env
ironm
enta
l fa
ctor
s
any
on
efr
om*
wei
ght
and
skin
col
our
are
affe
cted
by
envi
ronm
enta
l fac
tors
* w
eigh
t is
aff
ecte
d by
die
t o
rex
erci
se a
nd s
kin
colo
ur b
y th
e S
un
acce
pt ‘w
eigh
t an
d sk
in c
olou
r ar
e no
t ju
stco
ntro
lled
by g
enes
’
an
sw
ers
mu
st
refe
r to
bo
th w
eig
ht
an
d
skin
co
lou
r
‘wei
ght
and
skin
col
our
are
not
cont
rolle
d by
gene
s’is
insu
ffic
ient
To
tal
6
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2007
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3 S
cien
ce M
ark
Sch
eme
T
ier
5−− 7
Pa
per
On
e
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____
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____
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____
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____
____
____
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Tie
r
5−− 7
Q N
o
10
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
2/1e
2/2i
2an
y tw
ofr
om*
muc
us w
ill b
uild
up
* ai
rway
s w
ill b
e (p
artia
lly)
bloc
ked
* co
ughi
ng*
lung
s ca
n be
com
e in
fect
ed o
rba
cter
ia a
re n
ot
rem
oved
* pa
rtic
les
or
dust
are
not
rem
oved
acce
pt ‘c
ilia
cann
ot m
ove’
acce
pt ‘n
arro
wer
airw
ays’
or
nam
ed p
art
ofth
e ai
rway
acce
pt ‘b
rea
thin
g w
ill b
e m
ore
diff
icul
t’
‘cili
a do
not
wor
k as
wel
l’is
insu
ffic
ient
do n
ot
acce
pt‘lu
ngs
will
be
bloc
ked’
b
2/2m
2an
y tw
ofr
om*
redu
ctio
n in
nic
otin
e*
she
gets
use
d to
less
nic
otin
e
* th
e pa
tch
or
it pr
ovid
es h
er w
ith n
icot
ine
so s
he
does
not
nee
d to
sm
oke
* it
prov
ides
her
with
less
nic
otin
e th
an a
ci
gare
tte
acce
pt ‘m
ass
ofni
cotin
e go
es d
own’
acce
pt ‘i
t re
duce
s th
e cr
avin
g’o
r‘it
red
uces
the
amou
nt s
he n
eeds
’
c i
3/1e
c i
i
3/1e
1 2
* th
e el
emen
ts a
re c
ombi
ned
or
join
ed o
rbo
nded
any
two
from
* ca
rbon
dio
xide
* w
ate
r*
carb
on m
onox
ide
acce
pt ‘t
he a
tom
s ar
e jo
ined
’ac
cept
‘it
has
a de
finite
com
posi
tion’
acce
pt ‘C
O2’
acce
pt ‘h
ydro
gen
oxid
e’o
r‘s
team
’or
‘H2O
’ac
cept
‘CO
’ac
cept
‘car
bon
oxid
e’if
neith
er ‘c
arbo
n di
oxid
e’n
or
‘car
bon
mon
oxid
e’is
giv
en
‘it h
as t
hree
ele
men
ts’i
s in
suff
icie
nt a
s it
is g
iven
in t
he q
uest
ion
To
tal
7
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 31
2007
KS
3 S
cien
ce M
ark
Sch
eme
T
ier
5−− 7
Pa
per
On
e
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32
Tie
r
5−− 7
Q N
o
11
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a i
1/2j
3/2b
2an
y tw
ofr
om*
(the
sol
ubili
ty o
f) p
otas
sium
chl
orid
e an
d so
dium
chl
orid
e in
crea
se*
the
diff
eren
ce is
sm
alle
r a
t lo
w t
empe
ratu
res
or
gre
ate
r a
t hi
gher
tem
pera
ture
s*
at
low
er t
empe
ratu
res
pota
ssiu
m c
hlor
ide
is
less
sol
uble
tha
n so
dium
chl
orid
e o
ra
t hi
gh
tem
pera
ture
s po
tass
ium
chl
orid
e is
mor
e so
lubl
e th
an s
odiu
m c
hlor
ide
* so
dium
chl
orid
e ch
ange
s le
ss t
han
pota
ssiu
m
chlo
ride
* a
t 25
°C t
hey
are
equa
lly s
olub
le
acce
pt ‘t
hey
both
incr
ease
’
acce
pt t
he c
onve
rse
acce
pt ‘t
he li
ne f
or p
otas
sium
chl
orid
e is
ste
eper
’o
r‘th
e lin
e fo
r so
dium
chl
orid
e is
fla
tter’
acce
pt ‘s
odiu
m c
hlor
ide
is a
ffec
ted
less
’or
‘pot
assi
um c
hlor
ide
is a
ffec
ted
mor
e’ac
cept
‘sod
ium
chl
orid
e ha
rdly
cha
nges
but
pota
ssiu
m c
hlor
ide
incr
ease
s’ac
cept
‘bet
wee
n 23
°C a
nd 2
7°C
the
y ar
e th
esa
me’
acce
pt,
for
one
mar
k,an
ans
wer
sta
ting
the
solu
bilit
y of
both
sal
ts a
t a
give
n te
mpe
ratu
reot
her
than
25°
C
acce
pt f
or t
wo
mar
ks ‘t
he s
olub
ility
of
pota
ssiu
mch
lorid
e in
crea
ses
mor
e th
an s
odiu
m c
hlor
ide’
or
‘sod
ium
chl
orid
e in
crea
ses
less
tha
n po
tass
ium
chlo
ride’
igno
re r
efer
ence
s to
cal
cium
sul
pha
te
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 32
2007
KS
3 S
cien
ce M
ark
Sch
eme
T
ier
5−− 7
Pa
per
On
e
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____
____
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____
____
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33
Tie
r
5−− 7
Q N
o
11
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a i
i
3/2b
1 1
any
on
efr
om*
crys
tals
or
solid
or
part
icle
s w
ould
app
ear
* po
tass
ium
chl
orid
e (w
ould
be
prec
ipita
ted)
any
on
efr
om*
cool
er w
ate
r ca
nnot
dis
solv
e as
muc
h po
tass
ium
chl
orid
e*
solu
bilit
y is
less
at
a lo
wer
tem
pera
ture
* th
e so
lubi
lity
decr
ease
s
acce
pt ‘i
t go
es c
loud
y o
rw
hite
’
acce
pt ‘l
ess
diss
olve
s’o
r‘a
t 90
°C m
ore
diss
olve
s’
b i
3/2b
b i
i
3/2b
1 1
any
on
efr
om*
abov
e 25
°C s
odiu
m c
hlor
ide
is d
epos
ited
befo
repo
tass
ium
chl
orid
e
* be
low
25°
C p
otas
sium
chl
orid
e w
ould
be
depo
site
d be
fore
sod
ium
chl
orid
e*
belo
w 2
5°C
the
ord
er w
ould
be
calc
ium
su
lpha
te,
pota
ssiu
m c
hlor
ide,
sodi
um c
hlor
ide
* ca
lciu
m s
ulph
ate
is t
he le
ast
solu
ble
follo
wed
by
sodi
um c
hlor
ide
and
then
pot
assi
um c
hlor
ide
* so
dium
chl
orid
epo
tass
ium
chl
orid
eca
lciu
m s
ulph
ate
acce
pt ‘b
elow
25°
C t
here
wou
ld b
e a
diff
eren
tor
der’
acce
pt ‘b
ecau
se o
fth
e or
der
in w
hich
the
y fe
ll’ac
cept
‘bel
ow 2
5°C
sod
ium
chl
orid
e w
ould
be
abov
e po
tass
ium
chl
orid
e’ac
cept
‘bel
ow 2
5°C
sod
ium
chl
orid
e w
ould
be
at
the
top’
acce
pt ‘t
he le
ast
solu
ble
was
dep
osite
d fir
st’
acce
pt ‘s
odiu
m’
acce
pt ‘p
otas
sium
’ac
cept
‘cal
cium
’
answ
ers
mus
t be
in t
he c
orre
ct o
rder
all
th
ree
answ
ers
are
requ
ired
for
the
mar
k
To
tal
6
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 33
2007
KS
3 S
cien
ce M
ark
Sch
eme
T
ier
5−− 7
Pa
per
On
e
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34
Tie
r
5−− 7
Q N
o
12
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
1/2n
1an
y o
ne
from
* va
riatio
n in
the
way
the
per
son
acts
* va
riatio
n in
the
way
the
toy
wor
ks*
varia
tion
in e
xter
nal c
ondi
tions
acce
pt ‘h
e m
ight
not
fire
it s
o ha
rd e
ach
time’
acce
pt ‘h
uman
rea
ctio
n tim
e st
artin
g an
dst
oppi
ng t
he s
topw
atc
h’ac
cept
‘les
s ai
r in
the
toy
’ac
cept
‘dra
ught
’ac
cept
‘the
win
d ha
s af
fect
ed it
’
‘the
timer
is n
ot a
ccur
ate
’is
insu
ffic
ient
b 1/2i
1an
y o
ne
from
* tim
e is
the
dep
ende
nt v
aria
ble
* di
stan
ce is
the
inde
pend
ent
varia
ble
in t
his
case
acce
pt ‘t
ime
is b
eing
tes
ted’
acce
pt ‘t
ime
is b
eing
mea
sure
d’ac
cept
‘we
chos
e th
e di
stan
ce t
o us
e’ac
cept
‘we
are
chan
ging
the
dis
tanc
e’ac
cept
‘we
fixed
or
cont
rolle
d th
e di
stan
ce’
‘tim
e is
the
thi
ng t
hat
chan
ges’
is in
suff
icie
nt‘b
ecau
se t
ime
is t
he a
xis
tha
t is
cha
ngin
g’is
insu
ffic
ient
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 34
2007
KS
3 S
cien
ce M
ark
Sch
eme
T
ier
5−− 7
Pa
per
On
e
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____
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____
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____
____
____
____
____
____
____
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____
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35
Tie
r
5−− 7
Q N
o
12
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
c i
1/2i
c i
i
1/2j
1 1
* al
l fou
r po
ints
mus
t be
plo
tted
to +
or
−on
e sm
all s
quar
e
* a
smoo
th c
urve
of
best
fit
the
gra
ph n
eed
not
go t
hrou
gh t
he o
rigin
d
1/2k
1*
The
pul
se o
fai
r sl
ows
dow
n as
it t
rave
ls.�
ifm
ore
than
one
box
is t
icke
d,aw
ard
no m
ark
To
tal
5
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 35
2007
KS
3 S
cien
ce M
ark
Sch
eme
T
ier
5−− 7
Pa
per
On
e
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36
Tie
r
5−− 7
Q N
o
13
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
4/2a
1 1
* 96
0 00
0
* km
/day
or
kilo
met
res
per
day
or
km d
ay−1
acce
pt ‘
’
acce
pt ‘4
0 00
0 km
/hr’
for
two
mar
ksac
cept
‘11.
1 km
/s’f
or t
wo
mar
ksac
cept
‘11
111
m/s
’for
tw
o m
arks
acce
pt ‘d
’for
‘day
’and
‘h’f
or ‘h
our’
do n
ot
acce
pt‘k
m p
day’
b
4/2b
1*
gra
vity
on
Mar
s is
less
acce
pt ‘g
ravi
ty is
gre
ate
r on
Ear
th’
c
4/4b
1an
y o
ne
from
* M
ars
is f
urth
er f
rom
the
Sun
* le
ss li
ght
reac
hes
Mar
sac
cept
‘the
Sun
is c
lose
r to
the
Ear
th’
acce
pt ‘t
he li
ght
rays
hav
e sp
read
out
mor
e’‘M
ars
is f
urth
er a
way
’is
insu
ffic
ient
do n
ot
acce
pt‘le
ss h
eat
reac
hes
Mar
s’
d
4/2g
1 1
* 16
00
* N
/m2
or
Pa
or
Nm
−2
acce
pt ‘4
0/0.
025’
acce
pt ‘p
asca
ls’
do n
ot
acce
ptlo
wer
cas
e ‘n
’
To
tal
6
192
000
000
____
____
__20
0
KS3 Sc MS1 275657.qxp 17/1/07 10:19 am Page 36
Tie
r
3−− 6
Q N
o
1
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a i
3/2g
a i
i
3/2a
1 1
* 52
* liq
uid
into
aso
lid
acce
pt ‘4
0 +
12’
bo
thst
ate
s ar
e re
quire
d fo
r th
e m
ark
b
3/1d
1an
y o
ne
from
* iro
n*
stee
lac
cept
‘cob
alt’
or
‘nic
kel’
c i
4/1d
c i
i
4/1d
1 1
* * it
wou
ld b
e re
pelle
dac
cept
‘pus
hed
away
’ac
cept
‘it
wou
ld f
all d
own
or
drop
’
bo
thpo
les
are
requ
ired
for
the
mar
k
‘they
wou
ld n
ot a
ttrac
t’is
insu
ffic
ient
To
tal
5
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3
−− 6 P
ap
er
Tw
o
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____
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____
____
____
____
____
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37
NS
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 37
Tie
r
3−− 6
Q N
o
2
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
4/4b
4/4d
2*
ifal
l thr
ee li
nes
are
corr
ect,
awar
d tw
o m
arks
ifon
e o
rtw
o lin
es a
re c
orre
ct,
awar
d on
e m
ark
ifm
ore
than
one
line
is d
raw
n fr
om a
ny p
art
ofth
e so
lar
syst
em,
awar
d no
cre
dit
for
tha
t pa
rt
b
4/4b
2*
awar
d on
e m
ark
for
the
Sun
in t
he c
orre
ctpo
sitio
naw
ard
one
mar
k fo
r bo
th E
arth
and
Nep
tune
inth
e co
rrec
t po
sitio
ns
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3
−− 6 P
ap
er
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
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____
____
____
___
38
Sun
Ear
th
Moo
n
Su
nM
ercu
ryV
enus
Eart
hM
ars
Jupi
ter
Sat
urn
Ura
nus
Nep
tun
e
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 38
Tie
r
3−− 6
Q N
o
2
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
c i
4/4e
c i
i
4/4c
1 1
any
on
efr
om*
wea
ther
for
ecas
ting
* co
mm
unic
atio
ns*
tele
scop
es*
glob
al p
ositi
onin
g sy
stem
*T
V*
spyi
ng*
inte
rnet
* g
ravi
ty
�
acce
pt ‘w
eath
er’
acce
pt ‘p
hone
’or
‘fax’
acce
pt ‘G
PS
’
acce
pt ‘t
akin
g ph
otog
raph
s’
ifm
ore
than
one
box
is t
icke
d,aw
ard
no m
ark
To
tal
6
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3
−− 6 P
ap
er
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
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____
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____
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____
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___
39
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 39
Tie
r
3−− 6
Q N
o
3
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
1/2e
1an
y o
ne
from
* st
opw
atc
h*
stop
cloc
kac
cept
‘tim
er’
‘wa
tch’
is in
suff
icie
nt‘c
lock
’is
insu
ffic
ient
‘sec
onds
’or
‘s’a
re in
suff
icie
nt
b
1/2g
BS
/2a
1*
s �
ifm
ore
than
one
box
is t
icke
d,aw
ard
no m
ark
c
1/2d
1*
the
type
of
trai
ner
�
ifm
ore
than
one
box
is t
icke
d,aw
ard
no m
ark
d
1/2d
2*
the
angl
e of
the
ram
p �
* th
e le
ngth
of
the
ram
p �
* th
e su
rfac
e of
the
ram
p �
ifal
l thr
ee a
nsw
ers
are
corr
ect,
awar
d tw
o m
arks
ifon
e o
rtw
o an
swer
s ar
e co
rrec
t,aw
ard
one
mar
kif
mor
e th
an t
hree
box
es a
re t
icke
d,de
duct
one
mar
k fo
r ea
ch in
corr
ect
tick
min
imum
mar
k ze
ro
To
tal
5
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3
−− 6 P
ap
er
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
___
40
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 40
Tie
r
3−− 6
Q N
o
4
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a i
4/2c
a i
i
4/2b
1 1
* an
arr
ow la
belle
d R
,to
the
rig
ht,
draw
n on
the
ro
pe
* an
arr
ow la
belle
d G
,ve
rtic
ally
dow
nwar
ds
acce
pt a
labe
lled
arro
w t
o th
e rig
ht,
draw
npa
ralle
l to
the
rope
b
4/2d
1an
y o
ne
from
* sn
ow is
sm
ooth
er*
snow
is m
ore
slip
pery
acce
pt ‘s
now
is s
lippe
ry’
acce
pt ‘c
oncr
ete
or
the
path
is r
ough
’
‘sno
w is
sof
t’o
r‘c
oncr
ete
is h
ard’
are
insu
ffic
ient
To
tal
3
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3
−− 6 P
ap
er
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
___
41
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 41
Tie
r
3−− 6
Q N
o
5
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
3/1d
1 1 1
* * *
ifm
ore
than
one
line
is d
raw
n fr
om a
n ob
ject
,aw
ard
no m
ark
for
tha
t ob
ject
b
3/1d
1 1*
Bra
ss d
oes
no
tbe
nd a
s ea
sily
as
copp
er.�
* B
rass
is h
arde
r th
an c
oppe
r.�
ifm
ore
than
tw
o bo
xes
are
ticke
d,de
duct
one
mar
k fo
r ea
ch in
corr
ect
tick
min
imum
mar
k ze
ro
c
3/1a
1*
liqui
d zi
nc a
nd s
olid
cop
per
�
ifm
ore
than
one
box
is t
icke
d,aw
ard
no m
ark
To
tal
6
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3
−− 6 P
ap
er
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
___
42
base
of
a sa
ucep
an
coin
wire
s in
a c
able
It do
es n
ot
rust
.
It is
a g
ood
cond
ucto
r of
elec
tric
ity.
It is
a g
ood
cond
ucto
rof
hea
t.
It is
no
tm
agne
tic.
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 42
Tie
r
3−− 6
Q N
o
6
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a i
3/1h
a i
i
3/1h
a i
ii
3/1h
1 1 1
* fil
tra
tion
�
* A
:sa
nd
* B
:fil
ter
pape
r
acce
pt ‘r
esid
ue’
acce
pt ‘p
aper
’or
‘filte
r’
ifm
ore
than
one
box
is t
icke
d,aw
ard
no m
ark
do n
ot
acce
pt‘fu
nnel
’or
‘filte
r fu
nnel
’
b i
1/2k
b i
i
3/2c
b i
ii
3/1h
1 1 1
* 10
0
* it
had
evap
ora
ted
* sa
lt
acce
pt ‘i
t w
ent
into
the
air’
acce
pt ‘s
odiu
m c
hlor
ide’
acce
pt ‘s
alts
’or
‘min
eral
s’o
r‘c
ryst
als’
do n
ot
acce
pt‘it
dis
appe
ared
’
To
tal
6
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3
−− 6 P
ap
er
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
___
43
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 43
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3
−− 6 P
ap
er
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
___
44
Tie
r
3−− 6
Q N
o
7
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a i
2/5c
a i
i
2/5e
2 1 1
any
two
from
* la
rge
or
shar
p cl
aws
or
nails
or
talo
ns*
larg
e o
rst
rong
or
shar
p be
ak*
larg
e ey
es o
rey
es t
hat
face
for
war
d*
win
gs f
or h
over
ing
* *
acce
pt ‘c
urve
d be
ak’
acce
pt ‘i
t ca
n se
e in
the
dar
k’ac
cept
‘it
can
hove
r’ac
cept
‘it
can
fly s
ilent
ly’
‘cla
ws’
or
‘nai
ls’o
r‘ta
lons
’are
insu
ffic
ient
‘bea
k’is
insu
ffic
ient
‘eye
s’is
insu
ffic
ient
‘it h
as w
ings
’or
‘it f
lies’
are
insu
ffic
ient
ifm
ore
than
one
line
is d
raw
n fr
om a
n an
imal
,aw
ard
no m
ark
for
tha
t an
imal
b
2/5c
1an
y o
ne
from
* to
kee
p w
arm
* fo
r in
sula
tion
acce
pt ‘p
rote
ctio
n fr
om c
old’
acce
pt ‘f
or f
light
’do
no
tac
cept
‘to k
eep
the
cold
out
’
c i
2/5d
c i
i
2/5d
1 1
any
on
efr
om*
few
er p
lace
s to
nes
t*
few
er p
lace
s to
lay
eggs
* th
ey la
y fe
wer
egg
s*
less
foo
d fo
r ow
ls*
owls
can
be
frig
hten
ed b
y tr
affic
or
peop
le*
loss
of
habi
tat
* th
ey c
atc
h o
rki
ll m
ice
acce
pt ‘n
owhe
re t
o ne
st’o
r‘n
o ho
me’
acce
pt ‘n
owhe
re t
o la
y eg
gs’
acce
pt ‘t
hey
cann
ot la
y eg
gs’
acce
pt ‘f
ewer
mic
e’o
r‘n
o m
ice’
or
‘no
food
’ac
cept
‘it
is t
oo n
oisy
’
acce
pt ‘t
o st
op m
ice
eatin
g th
e cr
ops’
acce
pt ‘t
o ke
ep m
ice
away
’‘to
pro
tect
the
cro
p o
rg
rain
’is
insu
ffic
ient
To
tal
7
mou
se
barn
ow
l
pred
ato
r
prey
prod
ucer
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 44
Tie
r
3−− 6
Q N
o
8
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a i
2/5a
BS
/1a
a i
i
2/3a
1 1 1 1
any
on
efr
om*
it pr
otec
ts t
hem
fro
m f
rost
* th
e so
il is
kep
t m
oist
* it
prot
ects
the
m a
gain
st b
irds
or
inse
cts
or
anim
als
* lig
ht
* ai
r*
wa
ter
acce
pt ‘p
rote
cts
them
fro
m t
he c
old
or
wea
ther
’ac
cept
‘it
keep
s th
em w
arm
’ac
cept
‘it
war
ms
the
soil’
acce
pt ‘t
hey
do n
ot d
ry o
ut’
acce
pt ‘i
t st
ops
anim
als
digg
ing
them
up’
‘pro
tect
s th
em’i
s in
suff
icie
nt
answ
ers
may
be
in e
ither
ord
er
b
2/5a
1an
y o
ne
from
* so
(po
tato
) pl
ants
can
gro
w*
it pr
even
ts p
ollu
tion
* it
prot
ects
the
env
ironm
ent
* it
will
not
get
tan
gled
with
mac
hine
ry o
ran
imal
s*
it do
es n
ot h
ave
to b
e pi
cked
up
acce
pt ‘m
ore
spac
e to
gro
w’
‘mor
e sp
ace’
is in
suff
icie
nt
c i
2/5e
c i
i
2/5a
2/5d
1 1
* la
dybi
rds
eat
aphi
ds
* in
sect
icid
e �
acce
pt ‘t
hey
eat
them
’‘th
ey k
ill t
hem
’is
insu
ffic
ient
ifm
ore
than
one
box
is t
icke
d,aw
ard
no m
ark
To
tal
7
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 3
−− 6 P
ap
er
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
___
45
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 45
Tie
r
3−− 6
5−− 7
Q N
o
9 1
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
4/5e
1an
y o
ne
from
* sh
e is
not
mov
ing
or
falli
ng*
she
is s
tand
ing
still
acce
pt ‘s
he h
as n
ot d
ived
or
jum
ped’
acce
pt ‘s
he is
stil
l’
awar
d a
mar
k fo
r an
ans
wer
whi
ch im
plie
s sh
e is
not
mov
ing
b i
4/5g
b i
i
4/5g
1 1
* 8
any
on
efr
om*
the
tota
l ene
rgy
is t
he s
ame
* th
e g
ravi
tatio
nal p
oten
tial a
nd t
he k
inet
ic e
nerg
y ad
d up
to
8
acce
pt ‘t
hey
are
the
sam
e’ac
cept
‘the
y al
l add
up
to 8
’
c i
4/2b
c i
i
4/2a
1 1
* g
ravi
ty
any
on
efr
om*
the
dist
ance
bet
wee
n st
ages
or
draw
ings
in
crea
ses
* sh
e fa
lls f
urth
er e
ach
time
acce
pt ‘g
ravi
tatio
nal’
or
‘gra
vita
tiona
l pul
l’ac
cept
‘wei
ght’
acce
pt ‘t
hey
are
furt
her
apar
t’
acce
pt ‘t
he p
ositi
ons
are
furt
her
apar
t’ac
cept
‘the
arr
ows
get
long
er’
acce
pt ‘h
er k
inet
ic e
nerg
y in
crea
ses’
do n
ot
acce
pt‘m
ass’
‘by
the
posi
tion
ofhe
r bo
dy’i
s in
suff
icie
nt
d
4/2d
1an
y o
ne
from
* fr
ictio
n*
drag
acce
pt ‘w
ate
r re
sist
ance
’ac
cept
‘upt
hrus
t’do
no
tac
cept
‘air
resi
stan
ce’
‘resi
stan
ce’i
s in
suff
icie
nt
To
tal
6
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
−− 6 a
nd
5−− 7
Pa
per
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
___
46
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 46
Tie
r
3−− 6
5−− 7
Q N
o
10 2
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
4/1a
1*
E
b
4/1a
1 1
awar
d on
e m
ark
for
each
cor
rect
row
c
4/1b
1*
0.8
0.
8 �
ifm
ore
than
one
box
is t
icke
d,aw
ard
no m
ark
To
tal
4
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
−− 6 a
nd
5−− 7
Pa
per
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
___
47
PQ
R
off
off
off
onof
fon
off
off
off
* *
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 47
Tie
r
3−− 6
5−− 7
Q N
o
11 3
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
1/2k
1an
y o
ne
from
* th
e cl
ock
wor
ks*
the
time
on t
he c
lock
acce
pt ‘w
hen
the
light
goe
s on
’ac
cept
‘it
show
s 12
.30’
‘it is
mak
ing
elec
tric
ity’i
s in
suff
icie
nt
b
1/2e
1*
voltm
eter
‘mul
timet
er’i
s in
suff
icie
nt
c
1/2d
1an
y o
ne
from
* th
e fr
uit
or
lem
on*
cond
ition
of
met
al
* te
mpe
ratu
re
acce
pt ‘t
he s
ize
or
surf
ace
area
of
the
met
al’
acce
pt ‘t
he d
ista
nce
betw
een
them
’ac
cept
‘the
am
ount
of
met
al’
acce
pt ‘h
ow f
ar t
hey
push
the
m in
’
do n
ot
acce
pt‘th
e ac
id’
d
1/2k
1*
copp
er a
ndm
agne
sium
acce
pt ‘m
ost
reac
tive
with
leas
t re
activ
e’an
swer
s m
ay b
e in
eith
er o
rder
bo
thm
etal
s ar
e re
quire
d fo
r th
e m
ark
e
1/2k
1an
y o
ne
from
* no
diff
eren
ce in
rea
ctiv
ity*
they
pro
duce
zer
o vo
ltage
acce
pt ‘t
here
wou
ld b
e no
rea
ctio
n be
twee
nth
em’
acce
pt ‘i
t w
ould
not
wor
k’ac
cept
‘the
re w
ould
be
no d
iffer
ence
’
To
tal
5
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
−− 6 a
nd
5−− 7
Pa
per
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
___
48
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 48
Tie
r
3−− 6
5−− 7
Q N
o
12 4
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a i
3/3d
a i
i
3/3e
1 1
* a
num
ber
less
tha
n 7
* it
wou
ld t
urn
milk
y o
rcl
oudy
acce
pt ‘w
hite
or
chal
ky’
b
3/3h
1*
mag
nesi
um s
ulph
ate
c i
3/3d
c i
i
3/2f
1 1
* a
num
ber
less
tha
n 7
* la
vado
no
tac
cept
‘mag
ma’
To
tal
5
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
−− 6 a
nd
5−− 7
Pa
per
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
___
49
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 49
Tie
r
3−− 6
5−− 7
Q N
o
13 5
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
1/2d
1an
y o
ne
from
* m
ass
ofsa
lt (in
the
sol
utio
n)*
conc
entr
atio
nac
cept
‘am
ount
or
wei
ght
ofsa
lt’‘s
alt’
is in
suff
icie
nt
b i
1/2n
b i
i
1/2n
1 1
* po
int
at
(10,
33)
circ
led
any
on
efr
om*
an in
corr
ect
read
ing
* a
reco
rdin
g er
ror
* an
err
or d
urin
g th
e in
vest
iga
tion
acce
pt ‘s
he c
ould
hav
e re
ad t
he s
cale
wro
ngly
’ac
cept
‘she
wro
te t
he w
rong
res
ult’
acce
pt ‘s
he m
arke
d th
e w
rong
poi
nt o
n th
e g
raph
’ac
cept
‘the
wro
ng m
ass
was
add
ed’
acce
pt ‘n
ot e
noug
h sa
lt w
as a
dded
’ac
cept
‘too
muc
h w
ate
r’do
no
tac
cept
‘too
muc
h sa
lt’
c
1/2h
1eit
her
* A
bine
ed t
o ch
eck
accu
racy
or
corr
ect
an e
rror
or
chec
k an
ano
mal
y
or
* R
ober
tyo
u ca
n pr
edic
t th
e re
sults
fro
m t
he p
atte
rn in
th
e g
raph
acce
pt ‘t
o ch
eck
whe
ther
it is
rig
ht o
rw
rong
’ac
cept
‘she
mig
ht h
ave
done
it d
iffer
ently
’ac
cept
‘it’s
a f
reak
res
ult’
acce
pt ‘y
ou c
an u
se t
he g
raph
’ac
cept
‘you
can
igno
re t
he p
oint
’ac
cept
‘the
re is
eno
ugh
evid
ence
’
bo
thth
e an
swer
‘Abi
’and
the
cor
rect
exp
lana
tion
are
requ
ired
for
the
mar
k
‘it is
a f
air
test
’is
insu
ffic
ient
or
bo
thth
e an
swer
‘Rob
ert’
and
the
corr
ect
expl
ana
tion
are
requ
ired
for
the
mar
k
awar
d a
mar
k if
both
Abi
and
Rob
ert
are
ticke
d if
the
reas
on g
iven
exp
lain
s w
hy b
oth
coul
d be
corr
ect
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
−− 6 a
nd
5−− 7
Pa
per
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
___
50
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Tie
r
3−− 6
5−− 7
Q N
o
13 5
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
d
1/2k
2*
true
fals
e
can
not
tell
ifal
l fou
r ro
ws
are
corr
ect,
awar
d tw
o m
arks
iftw
o o
rth
ree
row
s ar
e co
rrec
t,aw
ard
one
mar
kif
mor
e th
an o
ne b
ox is
tic
ked
on a
ny r
ow,
awar
dno
cre
dit
for
tha
t ro
w
To
tal
6
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
−− 6 a
nd
5−− 7
Pa
per
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
___
51
�
�
�
�
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 51
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
−− 6 a
nd
5−− 7
Pa
per
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
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____
____
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____
____
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___
52
[Bla
nk p
ag
e]
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 52
Tie
r
3−− 6
5−− 7
Q N
o
14 6
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
3/1e
1an
y o
ne
from
* th
e m
ixtu
re g
low
ed*
ther
e w
as a
col
our
chan
ge*
a bl
ack
solid
for
med
* a
new
sub
stan
ce h
as b
een
form
ed
acce
pt ‘t
he t
empe
ratu
re in
crea
sed’
acce
pt ‘a
com
poun
d o
riro
n su
lphi
de w
as f
orm
ed’
acce
pt ‘t
here
is n
o lo
nger
any
sul
phur
or
yello
wo
riro
n o
rg
rey’
b
3/1d
3/1e
2*
iron:
met
allic
ele
men
t*
sulp
hur:
non-
met
allic
ele
men
t*
iron
sulp
hide
:co
mpo
und
acce
pt ‘m
etal
’ac
cept
‘non
-met
al’
ifal
l thr
ee a
nsw
ers
are
corr
ect,
awar
d tw
o m
arks
iftw
o an
swer
s ar
e co
rrec
t,aw
ard
one
mar
k
c
3/1d
1*
sulp
hur:
noiro
n:ye
sb
oth
answ
ers
are
requ
ired
for
the
mar
k
d i
3/3h
d i
i
3/1e
3/2i
1 1
* zi
nc s
ulph
ide
* su
lphu
r di
oxid
eac
cept
‘sul
phur
oxi
de’o
r‘s
ulph
ur t
rioxi
de’
do n
ot
acce
pt‘z
inc
sulp
hate
’
To
tal
6
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
−− 6 a
nd
5−− 7
Pa
per
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
___
53
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 53
Tie
r
3−− 6
5−− 7
Q N
o
15 7
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a i
2/2a
2/2d
a i
i
2/2a
2/2d
a i
ii
2/2a
2/2d
1 1 1
* fa
t
* ca
rboh
ydra
te
* pr
otei
n
b
1/2k
1*
200
g �
ifm
ore
than
one
box
is t
icke
d,aw
ard
no m
ark
c
2/2a
1an
y o
ne
from
* vi
tam
ins
* w
ate
r*
fibre
acce
pt a
nam
ed v
itam
in
acce
pt ‘r
ough
age’
acce
pt ‘m
iner
als’
or
a na
med
min
eral
do n
ot
acce
pt‘c
alci
um’
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
−− 6 a
nd
5−− 7
Pa
per
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
___
54
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 54
Tie
r
3−− 6
5−− 7
Q N
o
15 7
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
d i
2/2d
d i
i
2/2d
1 1
* 11
00
any
on
efr
om*
to m
ake
milk
* m
ilk c
onta
ins
calc
ium
* a
brea
st-f
ed b
aby
need
s ca
lciu
m f
or g
row
th o
r
for
bone
s o
rte
eth
* sh
e ha
s to
hav
e en
ough
cal
cium
for
her
self
and
the
baby
acce
pt a
num
ber
from
100
0 to
130
0
acce
pt ‘t
he b
aby
need
s ca
lciu
m’
acce
pt ‘t
o fe
ed h
erse
lfan
d th
e ba
by’
acce
pt ‘t
he b
aby
need
s 60
0 an
d sh
e ne
eds
500’
acce
pt ‘t
his
is r
ecom
men
ded
for
mot
her
and
baby
’
‘to f
eed
the
baby
’is
insu
ffic
ient
To
tal
7
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
−− 6 a
nd
5−− 7
Pa
per
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
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___
55
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Tie
r
3−− 6
5−− 7
Q N
o
16 8
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
2/1b
1 1*
chlo
ropl
ast
any
on
efr
om*
phot
osyn
thes
is
* ab
sorb
s o
rtr
aps
light
acce
pt ‘c
hlor
ophy
ll’
acce
pt ‘i
t pr
oduc
es f
ood
or
gluc
ose
or
suga
r o
r
carb
ohyd
rate
’‘c
onta
ins
chlo
roph
yll’
is in
suff
icie
nt
b
2/1b
1 1*
nucl
eus
* it
cont
rols
the
cel
lac
cept
‘it
tells
the
cel
l wha
t to
do’
acce
pt ‘i
t tr
ansf
ers
or
cont
ains
gen
etic
info
rma
tion
or
chro
mos
omes
’
‘bra
in o
fth
e ce
ll’is
insu
ffic
ient
do n
ot
acce
pt‘fo
r re
prod
uctio
n’‘it
con
trol
s su
bsta
nces
ent
erin
g o
rle
avin
g th
ece
ll’is
insu
ffic
ient
c
2/1b
1an
y tw
ofr
om*
A*
B*
D
acce
pt ‘c
hlor
opla
st’o
r‘c
hlor
ophy
ll’ac
cept
‘vac
uole
’ac
cept
‘cel
l wal
l’
d
2/1b
1*
it ha
s ch
loro
plas
ts o
rch
loro
phyl
lac
cept
‘it
is g
reen
’‘it
is a
diff
eren
t sh
ape’
is in
suff
icie
nt‘it
doe
s no
t ha
ve a
hai
r’is
insu
ffic
ient
To
tal
6
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
rs 3
−− 6 a
nd
5−− 7
Pa
per
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
___
56
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 56
Tie
r
5−− 7
Q N
o
9
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a i
4/3f
a i
i
4/3f
1 1 1 1
* on
ly r
ed li
ght
pass
es t
hrou
gh t
he f
ilter
* th
e ba
ll re
flect
s re
d lig
ht
* bl
ack
any
on
efr
om*
the
gre
en b
all d
oes
not
refle
ct r
ed li
ght
or
the
light
tha
t pa
sses
thr
ough
the
filt
er*
the
ball
abso
rbs
red
light
acce
pt ‘t
he o
ther
col
ours
are
filt
ered
out
or
abso
rbed
’
acce
pt ‘w
hite
obj
ects
ref
lect
all
colo
urs’
acce
pt ‘y
ou c
anno
t se
e it’
acce
pt ‘n
o g
reen
ligh
t re
ache
s th
e ba
ll’
‘red
light
pas
ses
thro
ugh’
is in
suff
icie
nta
mar
k fo
r th
is a
nsw
er m
ay b
e aw
arde
d in
eit
her
a i
or
a i
ipr
ovid
ed t
here
is n
o co
ntra
dict
ion
b 4/3f
1*
two
red
spot
sac
cept
‘red
b
lack
r
ed’
‘two
spot
s’is
insu
ffic
ient
‘red
spot
s’is
insu
ffic
ient
do n
ot
acce
pt‘o
nly
red
light
’
To
tal
5
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 5
−− 7 P
ap
er
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
___
57
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 57
Tie
r
5−− 7
Q N
o
10
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a i
4/2f
a i
i
4/2f
a i
ii
4/2f
1 1 1 1
* 10
0*
Ncm
* 10
0
* 10
acce
pt ‘5
×20
’ac
cept
‘cm
N’
acce
pt ‘1
.0 N
m’f
or t
wo
mar
ks
acce
pt ‘t
he s
ame’
acce
pt t
he n
umer
ical
ans
wer
to
part
a i
acce
pt t
he n
umer
ical
ans
wer
to
a i
i÷
10
do n
ot
acce
ptlo
wer
cas
e n
the
mar
k fo
r th
e un
it m
ay b
e aw
arde
d in
par
t a
ii
ifno
t gi
ven
in p
art
a i
the
unit
is n
ot r
equi
red
for
the
mar
k
b
4/5e
1
* it
decr
ease
dan
y o
ne
from
* le
ss li
ght
ener
gy c
hang
ed t
o el
ectr
ical
ene
rgy
* th
e vo
ltage
pro
duce
d by
the
sol
ar c
ell w
as
low
er
acce
pt ‘i
t sl
owed
dow
n’
acce
pt ‘l
ess
light
to
pow
er p
lane
’ac
cept
‘it
rece
ived
less
ene
rgy’
acce
pt ‘l
ess
elec
tric
al o
rki
netic
ene
rgy
prod
uced
’
bo
thth
e an
swer
and
the
cor
rect
exp
lana
tion
are
requ
ired
for
the
mar
kdo
no
tac
cept
‘it s
topp
ed’
‘less
ligh
t’is
insu
ffic
ient
do n
ot
acce
pt‘n
o lig
ht t
o pr
ovid
e en
ergy
’
To
tal
5
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 5
−− 7 P
ap
er
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
___
58
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 58
Tie
r
5−− 7
Q N
o
11
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
1/1a
1*
tha
t w
ate
r en
ters
the
cel
ls in
clu
ster
s of
wa
ter
mol
ecul
esac
cept
‘tha
t cl
uste
rs o
fw
ate
r m
olec
ules
are
too
big
to e
nter
the
cel
ls’
acce
pt ‘t
he s
ize
ofth
e cl
uste
rs m
atte
rs’
acce
pt ‘s
mal
l clu
ster
s ar
e m
ore
effic
ient
’ac
cept
‘onl
y th
eir
wa
ter
wou
ld b
e ab
sorb
ed b
y th
e ce
lls’
do n
ot
acce
pt‘ta
p w
ate
r m
olec
ules
are
too
larg
eto
be
abso
rbed
by
the
body
’do
no
tac
cept
‘the
size
of
the
clus
ters
doe
s no
tm
atte
r’
b
1/2a
1an
y o
ne
from
* be
auty
can
not
be m
easu
red
* bl
ood
pres
sure
can
be
mea
sure
d
acce
pt ‘b
eaut
y is
diff
icul
t to
mea
sure
or
judg
e o
r
com
pare
’ac
cept
‘fee
ling
beau
tiful
is s
ubje
ctiv
e o
ran
opin
ion’
c
1/2d
1an
y o
ne
from
* so
tha
t ju
dgem
ent
was
not
bi
ased
* to
avo
id in
fluen
cing
the
out
com
e*
to a
void
influ
enci
ng t
he r
esea
rche
rs
acce
pt ‘s
o th
e co
mpa
ny c
anno
t rig
the
res
ults
’ac
cept
‘so
you
can
trus
t it’
‘brib
ing’
is in
suff
icie
nt‘to
mak
e it
fair’
is in
suff
icie
nt
d
1/2d
1an
y o
ne
from
* if
they
bel
ieve
the
re is
a b
enef
it th
ey m
ay r
epor
tfe
elin
g be
tter
* so
tha
t th
ey c
anno
t pr
ejud
ge t
he r
esul
ts*
to g
et a
mor
e ob
ject
ive
opin
ion
* to
pre
vent
bia
s
acce
pt ‘s
o th
ey c
anno
t lie
’ac
cept
‘so
they
do
not
just
say
wha
t th
ey b
elie
veab
out
diff
eren
t ty
pes
ofw
ate
r’
‘to m
ake
it fa
ir’is
insu
ffic
ient
To
tal
4
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 5
−− 7 P
ap
er
Tw
o
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59
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 59
Tie
r
5−− 7
Q N
o
12
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a
3/3b
1an
y o
ne
from
* zi
nc d
ispl
aces
cop
per
from
the
cop
per
sulp
hate
* zi
nc c
hang
es p
lace
s w
ith c
oppe
rac
cept
‘cop
per
is d
ispl
aced
by
the
zinc
’ac
cept
‘the
mor
e re
activ
e m
etal
dis
plac
es o
r
take
s th
e pl
ace
ofth
e ot
her
one’
acce
pt ‘z
inc
take
s th
e su
lpha
te’
b
1/2e
1*
he o
nly
need
ed t
o fin
d ou
t th
e te
mpe
ratu
re r
ise
or
chan
ge
c i
3/3c
c i
i
3/3c
c i
ii
3/3c
1 1 2
any
on
efr
om*
mag
nesi
um is
the
mos
t re
activ
e m
etal
use
d*
the
bigg
est
diff
eren
ce in
rea
ctiv
ity is
bet
wee
n m
agne
sium
and
cop
per
any
on
efr
om*
the
reac
tivity
is n
earl
y th
e sa
me
* th
ey a
re n
ext
to e
ach
othe
r in
the
rea
ctiv
ity
serie
s
acce
pt ‘m
agne
sium
is a
bove
the
oth
ers’
acce
pt ‘m
agne
sium
is m
ore
reac
tive
than
iron
and
zinc
’
acce
pt ‘z
inc
is s
light
ly m
ore
reac
tive
than
iron
’‘z
inc
is m
ore
reac
tive
than
iron
’is
insu
ffic
ient
awar
d on
e m
ark
for
iden
tifyi
ng t
he t
wo
reac
tions
tha
t ta
ke p
lace
awar
d on
e m
ark
for
iden
tifyi
ng t
he t
wo
mix
ture
sof
chem
ical
s w
hich
do
not
reac
t
To
tal
6
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 5
−− 7 P
ap
er
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
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____
____
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___
60
mix
ture
Wou
ld t
here
be
a ris
e in
tem
pera
ture
?al
umin
ium
+so
dium
chl
orid
eno
calc
ium
+
zinc
sul
phat
eye
s
lead
+
zinc
chl
orid
eno
mag
nesi
um +
iron
chlo
ride
yes
*
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 60
Tie
r
5−− 7
Q N
o
13
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a i
2/2g
a i
i
2/2g
a i
ii
2/2g
1 1 1
any
on
efr
om*
men
stru
atio
n*
the
linin
g of
the
uter
us is
she
d
* a
day
from
day
14
to d
ay 1
8an
y o
ne
from
* it
is ju
st a
fter
ovul
atio
n o
rda
y of
ovul
atio
n*
tha
t is
whe
n an
egg
is li
kely
to
be in
the
ovi
duct
or
fallo
pian
tub
e*
tha
t is
just
afte
r an
egg
is r
elea
sed
* an
egg
is r
elea
sed
on d
ay 1
4
any
on
efr
om*
so t
hat
a fe
rtili
sed
egg
can
be im
plan
ted
* to
rec
eive
an
egg
acce
pt ‘t
he p
erio
d’ac
cept
‘the
lini
ng o
fth
e ut
erus
bre
aks
up’
acce
pt ‘t
he w
all o
fth
e ut
erus
bre
aks
dow
n’
acce
pt ‘i
n th
e m
iddl
e’
acce
pt ‘t
hat
is w
hen
an e
gg is
rel
ease
d’
do n
ot
acce
pt‘th
e ut
erus
is s
hed’
‘the
wal
l of
the
uter
us b
reak
s’is
insu
ffic
ient
bo
thth
e an
swer
and
the
cor
rect
exp
lana
tion
are
requ
ired
for
the
mar
kdo
no
tac
cept
‘aro
und
day
14’
‘it is
in t
he m
iddl
e of
the
cycl
e’is
insu
ffic
ient
b i
2/2g
b i
i
2/2g
1 1
* a
line
whi
ch c
ontin
ues
to r
ise
or
rem
ains
ho
rizon
tal a
fter
day
28
any
on
efr
om*
men
stru
atio
n st
ops
* so
the
ovu
m o
rem
bryo
will
impl
ant
acce
pt a
line
ris
ing
or
rem
aini
ng h
oriz
onta
l afte
rda
y 1
acce
pt ‘t
he e
mbr
yo o
rfo
etus
or
baby
nee
ds a
bloo
d su
pply
’ac
cept
‘the
lini
ng w
ould
bec
ome
thic
ker
or
stay
thic
k’ac
cept
‘the
lini
ng is
not
she
d’
‘pro
vide
s su
ppor
t’is
insu
ffic
ient
To
tal
5
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 5
−− 7 P
ap
er
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
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____
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___
61
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 61
Tie
r
5−− 7
Q N
o
14
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
a i
Aw
ard
a m
ark
fo
r an
an
sw
er
tha
t sh
ow
s t
ha
t m
ag
go
ts w
ill
on
ly b
e f
ou
nd
in
mea
t th
at
flie
s h
ave h
ad
co
nta
ct
wit
h,
for
exam
ple
:
1/1c
1/2k
1an
y o
ne
from
* th
ere
wer
e no
mag
gots
in c
onta
iner
2*
ther
e w
ere
no m
aggo
ts in
con
tain
er 3
* th
ere
wer
e on
ly m
aggo
ts o
n th
e m
eat
in
cont
aine
r 1
or
in t
he c
onta
iner
tha
t w
as o
pen
* th
e m
eat
the
flies
cou
ld n
ot r
each
had
no
mag
gots
in it
* th
ere
are
mag
gots
on
the
mes
h bu
t no
t on
th
e m
eat
acce
pt ‘w
hen
the
mea
t is
sea
led
ther
e ar
e no
mag
gots
’‘th
ere
are
mag
gots
on
the
mes
h’is
insu
ffic
ient
a i
iA
ward
a m
ark
fo
r an
an
sw
er
tha
t sh
ow
s t
ha
t co
nta
ct
wit
h a
ir i
s n
ot
su
ffic
ien
t fo
r m
ag
go
ts t
o d
evelo
p,
for
exam
ple
:
1/1c
1/2k
1an
y o
ne
from
* th
ere
wer
e m
aggo
ts in
con
tain
er 1
but
no
mag
gots
in c
onta
iner
2 o
r3
* ai
r co
uld
get
into
con
tain
er 3
* th
ere
is a
ir in
con
tain
er 2
acce
pt ‘t
here
wer
e no
mag
gots
in c
onta
iner
2 o
r
3’ acce
pt ‘t
here
wou
ld h
ave
been
mag
gots
in a
ll of
them
’
b
1/2m
1an
y o
ne
from
* th
ey h
ad n
o fo
od*
they
sta
rved
or
died
acce
pt ‘m
aggo
ts c
ould
not
get
to
the
food
’ac
cept
‘mag
gots
cou
ld n
ot e
at
the
mea
t’‘m
aggo
ts c
ould
not
get
to
the
mea
t’is
insu
ffic
ient
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 5
−− 7 P
ap
er
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
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62
KS3 Sc MS2 275657.qxp 17/1/07 10:20 am Page 62
Tie
r
5−− 7
Q N
o
14
Part
Mark
An
sw
er
Accep
tA
dd
itio
nal
gu
idan
ce
c
2/2n
2an
y tw
ofr
om*
flies
or
inse
cts
cann
ot r
each
the
mea
t*
too
cold
for
bac
teria
or
fung
i to
mul
tiply
or
bact
eria
mul
tiply
mor
e sl
owly
* pr
even
ts m
eat
rotti
ng
acce
pt ‘m
icro
bes
gro
w m
ore
slow
ly’
acce
pt ‘k
eeps
the
mea
t o
rfo
od f
resh
’or
‘so
itdo
es n
ot g
o of
f’o
r‘to
o co
ld f
or e
nzym
es t
o w
ork’
acce
pt ‘e
ggs
or
mag
gots
gro
w m
ore
slow
ly’
do n
ot
acce
pt‘it
kill
s ba
cter
ia’o
r‘s
tops
the
gro
wth
of
bact
eria
’do
no
tac
cept
‘it is
too
col
d o
rto
o co
ol’w
ithou
tqu
alifi
catio
n
do n
ot
acce
pt‘m
aggo
ts a
re k
illed
by
the
cold
’
To
tal
5
2007
KS
3 S
cien
ce M
ark
Sch
eme
Tie
r 5
−− 7 P
ap
er
Tw
o
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
____
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____
____
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___
63
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KS3 Sc MS1+2 back 275657.qxp 17/1/07 10:21 am Page 64