key stage 3 ks3 science markscheme 2005

8/18/2019 Key Stage 3 Ks3 Science MarkScheme 2005

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2

0 0 5

KEY STAGE

3LEVELS

3–7

Sc

2005

Science tests

Mark scheme forPapers 1 and 2

department for

education and skillscreating opportunity, releasing potential, achieving excellence


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2

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 11 and from tier 5–7 paper 1

question 3, illustrates this.

2005 KS3 Science Mark Scheme Tiers 3–6 and 5–7 Introduction

Tier Q No3–6 11

5–7 3

Part Mark Answer Accept Additional guidance

a 12/2e

‘the arm would not workproperly’ is insufficient

accept ‘you could not bendor straighten your arm’

accept ‘the biceps or musclewould not work properly’

any one from* the force of the muscle would

be less or lost* the (fore)arm or bone would

not move* the biceps or muscle could

not pull on the bone* the biceps or muscle would

have no effect

* the biceps or muscle wouldhave less effect

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’.


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In the following example from part (d) of tier 5–7 paper 1 question 9, an answer

giving ‘no food’ and ‘the population is poisoned’ will be awarded two marks.

However an answer which gives ‘the population is poisoned’ and ‘pollution in the water’

will be given only one mark, as both points are correct answers for the same mark.

In the following example, from part (b) of tier 3–6 paper 2 question 12 and tier 5–7

question 5, 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;

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 on the question.


3


d 22/5d award marks for answers

which indicate sudden,serious changes inconditions

accept ‘more predators’accept ‘not enough food’accept ‘pollution in the water’accept ‘acid rain’

any two from* new predators* no food* the population is poisoned

* disease* the lake or pond dried up

or froze


b 11/1b

answers must include acomparisonaward a mark for an answer inthe past tense if a comparisonis included

accept ‘the finer the tablet thequicker it dissolves’

accept ‘the smaller the pieces

the faster it dissolves’

any one from* crushed tablets will dissolve

more quickly than wholetablets

* a whole tablet will take

longer to dissolve* the bigger the surface orarea the faster it dissolves


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4

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 type in

the mark scheme, if one is given.

If any doubt persists, markers will consult with 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 creditworthy misspelling

must be a phonetic equivalent of the required word, with the major syllables of thecorrect word represented in the answer.

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.



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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

The sum of the marks gained on both papers determines the level awarded. A copy of the level threshold tables which show the mark ranges for the award of different levels

will be sent to each school by the QCA in July 2005.

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 2005 key stage 3 science tests and mark schemes were developed by the

University of Cambridge Local Examinations Syndicate and the Centre for Research

into Primary Science and Technology (CRIPSAT) on behalf of the QCA.


5


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6


Q Sc1 Sc2 Sc3 Sc4 Q Sc1 Sc2 Sc3 Sc4

1 6 1 3 4

2 5 2 7

3 5 3 3 2 2

4 6 4 1 4

5 8 5 6

6 6 6 7

7 1 4 7 6

8 4 8 6

9 5 9 4

10 6 10 3 2

11 5 11 2 7

12 6 1 12 5

13 1 4 1 13 5

14 6 14 6

15 6 15 5

16 4 Total 25 20 22 23

Total 19 33 16 22

TotalP1 + 2 44 53 38 45 Overall

180

Mark Allocation Grid:Tier 3–6

TIER 3–6 Paper 1 TIER 3–6 Paper 2


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7

Q Sc1 Sc2 Sc3 Sc4 Q Sc1 Sc2 Sc3 Sc4

1 5 1 6

2 6 2 4

3 5 3 3 2

4 6 1 4 2 7

5 1 4 1 5 5

6 6 6 5

7 6 7 6

8 4

4

8 5

9 1 9 5

10 1 4 10 5

11 5 11 5

12 5 12 5

13 5 13 5

14 5 14 5

Total 13 25 15 22 Total 22 16 20 17

TotalP1 + 2 35 41 35 39

150

Overall

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.

Mark Allocation Grid:Tier 5–7

TIER 5–7 Paper 1 TIER 5–7 Paper 2


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2 0 0 5 K S 3 S c i en c eM ar k S c h em e

T i e

r 3 – 6 P a p er On e

8

P ar t

M ar k

A n s

w er

A c c e p t

A

d d i t i on al g ui d an c e

T o t al

6

i f

al l t h r e el i n e s ar e c or r e c t , aw ar d t w

om ar k s

i f

on e or t w ol i n e s ar e c or r e c t , aw ar d

on em ar k

i f

m or e t h an on el i n ei s d r awnf r om a

n y ani m al ,

aw ar d n o c r e d i t f or t h a t ani m al

*

2

d 2

/ 4 b

‘ i t h a s a t ai l ’ i s i n s uf f i c i en t

‘ i t h a s gi l l s ’ or ‘ i t h a s gi l l s t o b r e a t h e or t o t ak ei n

ox y g en’ ar ei n s uf f i c i en t

a c c e p t ‘ t h e t ai l h el p s

i t s wi m’

a c c e p t a d e s c r i p t i on

of s t r e aml i ni n g s u c h a s ‘ i t i s

n ar r ow

or t h i n’

a c c e p t ‘ s c al e s m ak e

i t s m o o t h ’ or ‘ i t i s s m o o t h ’

an y

on ef r om

* i t h

a s f i n s

* i t i s s t r e aml i n e d

1

c2

/ 5 c

* b a

c k b on e s

1

b 2

/ 4 b

a c c e p t ‘ t a d p ol e’

a c c e p t ‘ t r o u t ’ or ‘ f i s h ’

a c c e p t ‘ t r o u t ’ or ‘ f i s h ’

a c c e p t ‘ c r o c o d i l e’ or

‘ r e p t i l e’

an y

on ef r om

* A

* B

an y

on ef r om

* B

* D

1 1

ai

2 / 5 c

ai i

2 / 4 b

Q

N o

1

T i er

3 – 6

f r o g

r e p t i l e s

c r o c o d i l e

m a

mm al s

w a t er v ol e

am ph i b i an s


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T i e


9

Q

N o

2

T i er

3 – 6

P ar t

M ar k

A n s

w er

A c c e p t

A


T o t al

5

i f

m or e t h an on e b ox i s t i c k e d , aw ar d

n om ar k

* C

✓

1

d 2

/ 3 d

i f


n om ar k

* mi n er al s

✓

1

c2

/ 3 c

i f


n om ar k

* n o

w a t er

✓

1

b 2

/ 3 a

d

on o t a c c e p t ‘ S un’

a c c e p t ‘ s unl i gh t ’

* l i gh t

* s u p p or t

1 1

ai

2 / 3 a

ai i

2 / 5 b


10/56


T i e


1 0

Q

N o

3

T i er

3 – 6

P ar t

M ar k

A n s

w er

A c c e p t

A d d i t i on

al g ui d an c e

T o t al

5

d on o t a

c c e p t ‘ c a t er pi l l ar s h i b er n a t ei nwi n t e

r ’

a c c e p t ‘ n ol e av e s ’ or ‘ n of o o d ’

a c c e p t ‘ i t i s t o o c ol d ’

a c c e p t ‘ c a t er pi l l ar s c h an g e

i n t o p u p a e or

c h r y s al i s e s or m o t h s ’

* t h e

t r e el o s e s i t s l e av e s

1

c2

/ 5 b

a c c e p t ‘ g y p s y m o t h c a t er pi l l ar s a t e t h el e av e s ’

a c c e p t ‘ t h e g y p s y m o t h c a t er pi l l ar s a t e al l t h e

l e av e s or al l t h ef o o d ’

a c c e p t ‘ n of o o d ’

a c c e p t ‘ t h e y w er e c om p e t i n

gf or f o o d ’

ei t h

er

* d e

c r e a s e d or w en t d own

an y

on ef r om

* f ew

er l e av e s t of e e d on

* g y p s y m o t h c a t er pi l l ar s a t em o s t of t h e

l e a

v e s

* l e s

s f o o d

or

an y

on ef r om

* i n c

r e a s e d or w en t u p

* s t a

y e d t h e s am e

an y

on ef r om

* t h e

y h a d en o u gh f o o d or l e av e s

* m o

r e e g g s h a t c h e d

1 1 1 1

b 2

/ 5 d

al l t h r e e

an s w er s ar er e q ui r e d f or t h em ar k

i f m or e t h

an on e b ox i s t i c k e d , aw ar d n om ar k

* o a

k t r e e→

c a t er pi l l ar →

b l a c k b i r d →

owl

* I t m ak e s f o o d b y ph o t o s y n t h e s i s .

✓

1 1

ai

2 / 5 e

ai i

2 / 3 a


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T i e


1 1

Q

N o

4

T i er

3 – 6

P ar t

M ar k

A n s

w er

A c c e p t

A


T o t al

6

i f


n om ar k

* i r o

nn ai l an d s t e el p a p er - c l i p

✓

1

d 3 / 1 d

‘ t oi n s ul a t e t h em’ i s i n s uf f i c i en t a s i t i s gi v eni n

t h

e q u e s t i on

a c c e p t an am e d pl a s

t i c

a c c e p t ‘ t o s t o p y o u b

ei n g el e c t r o c u t e d ’

a c c e p t ‘ t om ak ei t s a

f e’

a c c e p t ‘ t o pr ev en t t h em s h or t c i r c ui t i n g’

a c c e p t ‘ i t d o e s n o t c on d u c t el e c t r i c i t y ’

an y

on ef r om

* pl a

s t i c

* r u b b er

* P V

C

an y

on ef r om

* t o

s t o p y o u g e t t i n g a s h o c k

* s o

t h ewi r e s d on o t t o u c h

1 1

ci

3 / 1 d

ci i

3 / 1 d

B S / 2 b

a c c e p t ‘ i r on’

a c c e p t ‘ s t e el ’ or ‘ c l i p’

an y

on ef r om

* n a

i l

* p a

p er - c l i p

1

b 3 / 3 a

* m e

t al

an y

on ef r om

* h e

a t

* t h e

r m al en er g y

1 1

a 3 / 1 d


12/56


T i e


1 2

Q

N o

5

T i er

3 – 6

P ar t

M ar k

A n s

w er

A c c e p t

A


‘ s

h e d i d n o t ex pl ai ni n d e t ai l ’ i s i n s uf f i c i en t

an s w er s r ef er r i n g t oh er ev al u a t i on of h er

i n

v e s t i g a t i on or m e t h o d ar ei n s uf f i c i e

n t

‘ s

h e d i d n o t s a y wh a t t h er e s ul t s w er e’ i s

i n

s uf f i c i en t

a c c e p t ‘ i t d i d n o t d e s

c r i b ewh a t s h eh a s f o un d o u t ’

a c c e p t ‘ s h eh a s n o t gi v en t h e p a t t er ni nh er

r e s ul t s ’

a c c e p t ‘ s h e d i d n o t s

a y i f c h an gi n g t h e

t em p er a t ur e af f e c t e d

t h e t i m e’

a c c e p t ‘ s h e d i d n o t s

a y wh a t t h er e s ul t s h ow e d ’

an y

on ef r om

* i t d

i d n o t u s eh er r e s ul t s

* s h e d i d n o t d e s c r i b e t h er el a t i on s h i p b

e t w e en

t em

p er a t ur e an d d i s s ol v i n g

1

d 1

/ 2 k

a c c e p t ‘ a s a c on t r ol ’

* t o

m ak e t h e t e s t f ai r

1

c1

/ 2 d

‘ m

e a s ur i n g j u g’ i s i n s uf f i c i en t

a c c e p t ‘ b e ak er ’

a c c e p t ‘ s c al e s ’

an y

t w of r om

* c l o

c k or t i m er or s t o pw a t c h

* t h e

r m om e t er or t em p er a t ur e s en s or

* m e

a s ur i n g c y l i n d er

* b a

l an c e

2

b 1

/ 2 e

d

on o t a c c e p t ‘ h e a t ’

aw ar d on em ar k f or al l t h r e er ow s of i nf or m a t i on

r e

c or d e d a c c ur a t el y i n t h e t a b l e

aw ar d on em ar k f or t h e t em p er a t ur e pr e s en t e d i n

a s c en d i n g or d e s c en d i n g or d er

a c c e p t ‘ t em p er a t ur e’

* t em

p er a t ur e of w a t er

*

1 2

ai

1 / 2 i

ai i

1 / 2 i

5 7

3 4

4 0

7 4

2 0

1 4 4


13/56


T i e


1 3

Q

N o

5

T i er

3 – 6

P ar t

M ar k

A n s

w er

A c c e p t

A


T o t al

8

t h

e c on c l u s i on s h o ul d r ef er t o t h ei n d

e p en d en t

an d d e p en d en t v ar i a b l e

a c c e p t ‘ t h eh o t t e s t d i s s ol v e d q ui c k e s t ’

a c c e p t t h e c onv er s e

a c c e p t ‘ wh en t h ew a

t er i s c ol d i t t ak e s l on g er t o

d i s s ol v e’

a c c e p t ‘ wh en t h ew a

t er i s h o t i t d i s s ol v e s q ui c k l y ’

a c c e p t ‘ t em p er a t ur e

d o e s af f e c t t h e t i m e t o

d i s s ol v e’

an y

on ef r om

* t h e

h o t t er t h ew a t er t h e q ui c k er i t d i s s ol v e s

* t h e

h i gh er t h e t em p er a t ur e t h el e s s t i m

ei s t ak en

f or

t h e c ol d c ur e t o d i s s ol v e

1

e1

/ 2 k


14/56


T i e


1 4

Q

N o

6

T i er

3 – 6

P ar t

M ar k

A n s

w er

A c c e p t

A


T o t al

6

an s w er s m u s t b ei n t h e c or r e c t or d er

a c c e p t ‘ l am p’ or ‘ l i gh

t ’

a c c e p t ‘ c el l ’

a c c e p t ‘

’ f or

‘

’

a c c e p t ‘

’ or ‘

’

a c c e p t c ur v e d wi r e s

* b u

l b

* b a

t t er y or c el l s

* s w

i t c h

* a s er i e s c i r c ui t d r awnwi t h t h e c or r e c t

s y m b ol s

s u c h a s

1 1 1 1

b i

4 / 1 a

b i i

4 / 1 a

i f


n om ar k

a c c e p t ‘ i t r ef l e c t s ’

a c c e p t ‘ i t b o un c e s of f ’

*

✓

* i t i s r ef l e c t e d

1 1

ai

4 / 3 c

ai i

4 / 3 c


15/56


T i e


1 5

Q

N o

7

T i er

3 – 6

P ar t

M ar k

A n s

w er

A c c e p t

A


T o t al

5

a c c e p t ‘ t h em a gn e t s

ar e a t t r a c t i n g’

a c c e p t ‘ t h eN

an d S

p ol e s a t t r a c t ’

a c c e p t ‘ i t w o ul d n o t f

l o a t ’

a c c e p t ‘ i t w o ul d s t i c k

t o t h e b a s e’

an y

on ef r om

* i t w

a s a t t r a c t e d t o t h e b a s e

* i t m

ov e d d own

* i t s

ank

1

d 4

/ 1 d

a c c e p t ‘ g o t s m al l er ’

a c c e p t ‘ m ov e d c l o s er ’

* d e

c r e a s e d

1

c1

/ 2 j

a c c e p t ‘ i t w o ul d m ov e u p an d d own’

* r e p el

* i t m

ov e d u pw ar d s or r e t ur n e d t oi t s or

i gi n al

p o

s i t i on

1 1

b i

4 / 1 d

b i i

4 / 1 d

b

o t h p ol e s ar er e q ui r e d f or t h em ar k

S N

*

1

a4

/ 1 d


16/56


T i e


1 6

Q

N o

8

T i er

3 – 6

P ar t

M ar k

A n s

w er

A c c e p t

A


T o t al

4

onl y gi v e c r e d i t f or a c on t r ol v ar i a b l e

wh i c h d o e s

n o t c onf l i c t wi t h t h e s u g g e s t e d i nv e s t i g a t i on

a c c e p t ‘ d i s t an c e t r av

el l e d ’

an y

a p pr o pr i a t e c on t r ol v ar i a b l e s u c h a s

* t h e o b j e c t u s e d

* t h e an gl e of t h e s l o p e

* t h e s ur f a c e u s e d

* t h eh ei gh t of t h er am p

* t h el en g t h of t h er am p

1

c1

/ 2 d

a

d e p en d en t v ar i a b l e ( DV ) wi t h o u t an

i n d e p en d en t

v ar i a b l e ( I V ) c an g ai n c r e d i t

d

on o t a c c e p t am e a s ur em en t s t r a t e

g y i f aDV

i s

n o t gi v en or i s i n c or r e c t

a c c e p t ‘ t h e t i m e t or e

a c h a gi v en p oi n t ’

a c c e p t ‘ an gl e or h ei gh t of r am p’

a c c e p t ‘ s p e e d ’

a c c e p t ‘ t a p em e a s ur e’

a c c e p t ‘ c l o c k ’

an y

s ui t a b l e d e p en d en t v ar i a b l e s u c h a s

* t h e d i s t an c e t r av el l e d

* t h e t i m e t om ov e d own t h er am p

* t h ef or c en e e d e d t o s t ar t t h e o b j e c t m

ov i n g

* t h e an gl e of t h er am p a t wh i c h t h e o b j e c t s t ar t s

m ov i n g

an y

a p pr o pr i a t e e q ui pm en t t om e a s ur e

t h e

d e p en d en t v ar i a b l e s u c h a s

* r ul er or m e t r er ul e

* s t o

pw a t c h or t i m er or l i gh t g a t e s

* n e

w t onm e t er

* pr o t r a c t or

1 1

b 1

/ 2 d

1 / 2 e

a c c e p t s p e c i f i c v ar i a

t i on s i n o b j e c t s , s u c h a s ,

‘ w ei gh t ’ or ‘ m a s s ’ or

‘ s ur f a c e ar e a’ or ‘ t y p e of

t r ai n er s ol e’ or ‘ t y p e

of s h o e’

an y

s ui t a b l ei n d e p en d en t v ar i a b l e s u c h

a s

* t h e s ur f a c e

* t h e an gl e of t h e s l o p e

* t h ek i n d of o b j e c t

* t h e s i z e of t h e p u s h

1

a1

/ 2 d

m ar

k er s sh o ul d r e a d t h e an sw er s t o

al l p ar t s b ef or em ar k i n g t h i s q u e s t i on

t h e

d r af t b ox sh o ul d b e c on s ul t e d f or cl ar i f i c a t i on of an y am b i g ui t y or

omi s si on

i f an an sw er i s c or r e c t ,i gn or e c on t r a

d i c t or y s t a t em en t swr i t t eni n t h e

d r af t b ox


17/56


T i er s 3 – 6 an d 5 –7 P a p er On e

1 7

Q

N o

9 1

T i er

3 – 6

5 –7

P ar t

M ar k

A n s

w er

A c c e p t

A


T o t al

5

i f


n om ar k

* T h

e y f e e d on o t h er l i v i n g t h i n g s an d h ar m t h em. ✓

1

d 2

/ 5 b

aw ar d am ar k f or an y a p pr o pr i a t e d e s c r i p t i on of

s e gm en t s s u c h a s ‘ r i n g s ’ or ‘ l i n e s ’ or

‘ c r e a s e s ’

‘ t h e y l o ok s i mi l ar ’ i s i n s uf f i c i en t

‘ s

am e t ex t ur e’ or ‘ b o d y s h a p e’ or ‘ s t r u c t ur e’ ar e

i n

s uf f i c i en t

a c c e p t ‘ i t s b o d y i s s p

l i t i n t o s e c t i on s ’

* i t h

a s s e gm en t s

1

c2

/ 4 b

a c c e p t ‘ wh e t h er i t c o

n t ai n e d ar s eni c or c o p p er ’

a c c e p t ‘ wh er e t h e c o

p p er or ar s eni c i s ’

* t h e

l ev el of c o p p er or ar s eni c or p ol l u t i on

1

b 2

/ 5 f

a c c e p t ‘ f r om t h ei r f o o

d or f r om b l a c k b i r d s ’

a c c e p t ‘ i t i s p a s s e d o

n or u p’

a c c e p t ‘ t h er e ar em o

r e y el l ow

e ar t h w or m s ’

an y

on ef r om

* b l a

c k b i r d s e a t e ar t h w or m s an d s p ar r o

wh awk s

e a

t b l a c k b i r d s

* i t e

a t s b l a c k b i r d s wh i c h e a t e ar t h w or m

s

* i t i s p a s s e d on t h r o u gh t h ef o o d c h ai n

an y

on ef r om

* t h e

y ar em or e e a s i l y s e en

* b r own e ar t h w or m s ar e b e t t er c am o uf l a g e d

1 1

ai

2 / 5 f

ai i

2 / 5 d


18/56



1 8

Q

N o

1 0 2

T i er

3 – 6

5 –7

P ar t

M ar k

A n s

w er

A c c e p t

A d d i t i on

al g ui d an c e

T o t al

6

d on o t a

c c e p t ‘ l e s s ai r t o t h e c el l s ’

‘ n o t h i n g c an g e t t h r o u gh ’ i s i n s uf f i c i en t

a c c e p t ‘ f a t ’

a c c e p t ‘ i t i s b l o c k e d ’

a c c e p t ‘ n o ox y g en’

a c c e p t ‘ n o gl u c o s e’

a c c e p t ‘ i t s t o p s t h e c i r c ul a t i on of b l o o d ’

a c c e p t ‘ b l o o d c ann o t f l ow

t h

r o u gh ’

a c c e p t ‘ i t s t o p s b l o o d g e t t i n

g t o t h eh e ar t ’

a c c e p t ‘ t h er ei s a b ui l d - u p o

f c ar b on d i ox i d e’

a c c e p t f or t w om ar k s ‘ t h e y g e t l e s s ox y g en a t e d

b l o o d ’

an y

on ef r om

* f a t

h a s b e en d e p o s i t e d

* t h e

ar t er y h a s b e c om en ar r ow er

an y

t w of r om

* l e s

s ox y g en t o t h e c el l s or h e ar t m u s c

l e

* l e s

s gl u c o s e t o t h e c el l s or h e ar t m u s c l e

* l e s

s b l o o d t o t h e c el l s or h e ar t m u s c l e

1 2

b i

2 / 2 i

b i i

2 / 2 l

i f m or e t h

an on el i n ei s d r awnf r om an y

s u b s t an c

e , aw ar d n om ar k f or t h a t s u b s t an c e

* * *

1 1 1

a2

/ 2 i

c ar b onm on ox i d e

c a u s e s a d d i c t i on t o

s m ok i n g

ni c o t i n e

c a u s e s i nf l u enz a ( f l u )

c a u s e s l un g c an c er

t ar

c a u s e s r e d b l o o d c el l s t o

c ar r y l e s s ox y g en


19/56


20/56



2 0

Q

N o

1 2 4

T i er

3 – 6

5 –7

P ar t

M ar k

A n s

w er

A c c e p t

A


b

o t h t h e an s w er an d t h e c or r e c t ex pl an a t i on ar e

r e

q ui r e d f or t h em ar k

‘ i t c h an g e s t em p er a t ur e’ i s i n s uf f i c i en

t

a c c e p t ‘ v a p o ur or s t e

am

or h o t w a t er ’ f or w a t er

v a p o ur

a c c e p t ‘ i t h e a t s u p’

a c c e p t ‘ i t m ak e s c on

d en s a t i on’

a c c e p t ‘ i t i s l i q ui d ’

a c c e p t ‘ i t c h an g e s s t

a t e’

a c c e p t ‘ i t t ur n s t ow a

t er ’

a c c e p t ‘ i t c o ol s ’

* a t em p er a t ur e a b ov e1 5 b u t b el ow

1 0 0

an y

on ef r om

* i t i s h e a t e d b y t h ew a t er v a p o ur

* t h e

r m al en er g y or h e a t i s t r an s f er r e d f r om t h e

w a

t er v a p o ur

an y

on ef r om

* i t c

on d en s e s

* i t c

h an g e s t o al i q ui d

* i t s

t em p er a t ur ef al l s

1 1 1

d i

4 / 5 d

d i i

3 / 1 h

3 / 2 c

a c c e p t a t em p er a t ur ef r om 9 9 t o1 0 1

* 1 0

0

1

c 3 / 1 a

a c c e p t ‘ d i s t i l l a t e’

* w a

t er

1

b 3 / 1 h

i f


n om ar k

* ev a p or a t i on t h en c on d en s a t i on

✓

1

a 3 / 1 h


21/56



2 1

Q

N o

1 2 4

T i er

3 – 6

5 –7

P ar t

M ar k

A n s

w er

A c c e p t

A


T o t al

7

a c c e p t ‘ i t c o ol s t h ew

a t er v a p o ur b e t t er or m or e

ef f i c i en t l y or q ui c k l y ’

a c c e p t ‘ i t wi l l w or k f a

s t er ’

a c c e p t ‘ i t i s c o ol e d ov er a b i g g er l en g t h or f or

l on g er ’

a c c e p t ‘ m or ew a t er i s c ol l e c t e d ’

an y

on ef r om

* c ol d w a t er r e pl a c e s w ar m w a t er

* t h e

w a t er s t a y s c ol d or c o ol er

* t h e

r ei s a b i g g er d i f f er en c ei n t em p er a

t ur e

b e

t w e en t h ew a t er v a p o ur an d t h ew a t er

* s om ev a p o ur e s c a p e s i nB

1

e 3 / 1 h


22/56



2 2

Q

N o

1 3 5

T i er

3 – 6

5 –7

P ar t

M ar k

A n s

w er

A c c e p t

A


T o t al

6

‘ i t d am a g e s t h e s t on e’ i s i n s uf f i c i en t

‘ i t c or r o d e s t h em’ i s i n s uf f i c i en t

a c c e p t ‘ t h e y a b s or b l i gh t ’

a c c e p t ‘ i t er o d e s t h em or w e ar s aw a y t h e b ui l d i n g’

a c c e p t ‘ i t d i s s ol v e s l i

m e s t on e or t h e b ui l d i n g’

* l e a

v e s ar en e e d e d f or ph o t o s y n t h e s i s

or f or

m a

k i n gf o o d

an y

on ef r om

* i t w

e a t h er s l i m e s t on e

* i t r

e a c t s wi t h t h e s t on e

1 1

ci

2 / 3 e

ci i

3 / 2 i

3 / 3 g

i f


n om ar k

a c c e p t ‘ i t n e u t r al i s e s

i t ’ or ‘ i t n e u t r al i s e s s om e of

t h e a c i d ’

* i t r

ai s e s t h e pH

or i t

* c al c i um s ul ph a t e

✓

1 1

b i

3 / 3 e

3 / 3 f

b i i

3 / 3 e

an s w er s m a y b ei n ei t h er or d er

b

o t h an s w er s ar er e q ui r e d f or t h em ar k

a c c e p t ‘ g a s ’

a c c e p t ‘ p e t r ol ’ or ‘ d i e

s el ’

a c c e p t ‘ s ul ph ur ox i d e

’ or ‘ s ul ph ur t r i ox i d e’

an y

t w of r om

* c o al

* p e

a t

* n a

t ur al g a s

* oi l

* s ul ph ur d i ox i d e

1 1

ai

4 / 5 a

ai i

3 / 1 e


23/56



2 3

Q

N o

1 4 6

T i er

3 – 6

5 –7

P ar t

M ar k

A n s

w er

A c c e p t

A


T o t al

6

d

on o t a c c e p t ‘ t h e S un’ s h e a t c ann o t

r e a c h

pl an e t s t h a t ar ef ar aw a y ’

‘ t h e S uni s w e ak er ’ i s i n s uf f i c i en t

a c c e p t t h e c onv er s e

a c c e p t ‘ t h ef ur t h er aw a y t h e c ol d er i t i s ’

a c c e p t ‘ l i gh t ’ f or en er g y

a c c e p t ‘ t h e S un’ s r a y

s ar ew e ak er or n o t a s

s t r on g’

* an um b er gr e a t er t h an2 8 7 0 an d s m al l er t h an

5 9

0 0

* t h e

f ur t h er aw a y t h el ow er t h e t em p er a t ur e

an y

on ef r om

* pl a

n e t s f ur t h er aw a y r e c ei v el e s s en er g y or

h e

a t

* en

er g y f r om t h e S un s pr e a d s o u t

* l e s

s h e a t r e a c h e s t h e pl an e t s t h a t ar e

f ur t h er

aw

a y

1 1 1

b i

1 / 2 j

4 / 4 b

b i i

1 / 2 j

4 / 4 b

b i i i

4 / 5 g

b

o t h t h el e t t er an d t h e c or r e c t ex pl an

a t i on ar e

r e


al l f o ur ar r ow s ar er e q ui r e d f or t h em

ar k

b

o t h t h el e t t er an d t h e c or r e c t ex pl an

a t i on ar e

r e


a c c e p t ‘ i t i s c l o s er or c l o s e’

a c c e p t ‘ i t i s f ur t h er o

r f ar aw a y ’

a c c e p t ‘ gr av i t y i s l ow

or l ow er ’

* C i t

i s t h e c l o s e s t t o t h e S un

* an

ar r ow

f r om e a c h of t h e p oi n t s A ,B , C an d D

t ow

ar d s t h e S un

* A i t

i s f ur t h e s t f r om t h e S un or t h e ef f e c t of t h e

S u

n’ s gr av i t y i s w e ak e s t

1 1 1

ai

4 / 4 c

ai i

4 / 4 c

ai i i

4 / 4 c


24/56

P ar t

M ar k

A n s

w er

A c c e p t

A


‘ t h e t e s t i s unf ai r ’ i s i n s uf f i c i en t

a c c e p t a d e s c r i p t i on

of i n a c c ur a c i e s , s u c h a s

‘ s h e c o un t e d t h en um

b er of c l i p s wr on gl y ’

a c c e p t ‘ s om e t h i n gw

r on gwi t h t h e t e s t s ’

a c c e p t ‘ s h e u s e d d i f f er en t s i z e d p a p er - c l i p s ’

a c c e p t ‘ t h e p a p er - c l i p s w er e al r e a d y m a gn e t i s e d ’

a c c e p t ‘ s h e d i d s om e t h i n gwr on g’

an y

on ef r om

* an

i n a c c ur a c y i nr e s ul t s

* a pr o b l em wi t h t h e d a t a or r e s ul t s

* a pr o b l em wi t h t h em e t h o d

1

b 1

/ 2 n

d

on o t a c c e p t ‘ t h en um b er of p a p er - c

l i p s ’

a c c e p t ‘ t h e c oi l s ’

a c c e p t ‘ t h e t ur n s ’

a c c e p t ‘ t h ev ol t a g e o

r p ow er ’

a c c e p t ‘ t h ewi r e’

a c c e p t ‘ t h e p a p er - c l i p s ’

a c c e p t ‘ p o s i t i on of t h

e c oi l on t h en ai l ’

a c c e p t ‘ t i gh t n e s s of t h e c oi l ’

a c c e p t ‘ d i s t an c e b e t w

e en t ur n s ’

a c c e p t ‘ t h en ai l ’

a c c e p t ‘ n um b er of p a

p er - c l i p s ’

a c c e p t ‘ c o un t t h em’

a c c e p t ‘ w ei gh t h em’

a c c e p t ‘ t h em or e c l i p

s t h e s t r on g er t h em a gn e t ’

a c c e p t ‘ m e a s ur e t h e

d i s t an c e a t wh i c h am a gn e t

wi l l j u s t pi c k u p a p a p er - c l i p’

* t h e

n um b er of t ur n s or c oi l s of wi r e

an y

on ef r om

* t h e

c ur r en t

* t h e

l en g t h or t h i c k n e s s or m a t er i al of

t h ewi r e

or

c oi l

* t h e

c i r c umf er en c e of t h e c oi l

* t h e

s i z e of p a p er - c l i p s

an y

on ef r om

* c o un t t h e p a p er - c l i p s pi c k e d u p

* m e

a s ur e t h ei r m a s s

1 1 1

ai

1 / 2 d

ai i

1 / 2 d

ai i i

1 / 2 e



2 4

Q

N o

1 5 7

T i er

3 – 6

5 –7


25/56


26/56



2 6

Q

N o

1 6 8

T i er

3 – 6

5 –7

P ar t

M ar k

A n s

w er

A c c e p t

A


T o t al

4

a c c e p t an y ar r ow

d r a

wn g oi n g u p an d t o t h er i gh t

*

1

c4

/ 2 c

‘ t h ef or c e s ar e e q u al ’ i s i n s uf f i c i en t

a c c e p t ‘ h ef l o a t s ’

a c c e p t ‘ n o t h i n g’

a c c e p t ‘ al l t h ef or c e s

c an c el o u t ’

a c c e p t ‘ t h e y c an c el e

a c h o t h er o u t ’

a c c e p t ‘ t h ef or c e s ar e b al an c e d ’

an y

on ef r om

* h e

wi l l r em ai n s t a t i on ar y

* h e

wi l l c on t i n u em ov i n g a t a c on s t an t s p e e d

an y

on ef r om

* t h e

r ei s n on e t f or c e

* t h e

p ai r s of f or c e s ar e e q u al

1 1

b 4

/ 2 c

* A

1

a4

/ 2 c


27/56


T i e

r 5 –7 P a p er On e

2 7

Q

N o

9

T i er

5 –7

P ar t

M ar k

A n s

w er

A c c e p t

A


T o t al

5

aw ar d m ar k sf or an sw er swh i ch i n

d i c a t e

s u d d en , s er i o u s ch an g e si n c on d i t i on s

a c c e p t ‘ m or e pr e d a t or s ’

a c c e p t ‘ n o t en o u gh f

o o d ’

a c c e p t ‘ p ol l u t i oni n t h

ew a t er ’

a c c e p t ‘ a c i d r ai n’

an y

t w of r om

* n e

w pr e d a t or s

* n o

f o o d

* t h e

p o p ul a t i oni s p oi s on e d

* d i s

e a s e

* t h e

l ak e or p on d d r i e d u p or f r oz e

2

d 2

/ 5 d

b


r e


‘ t h e y ar e s t e a d y ’ i s i n s uf f i c i en t

‘ t h el i n ei s s t r ai gh t ’ i s i n s uf f i c i en t

a c c e p t ‘ t h e gr a ph i s f l a t ’

* t h e

y ar e e q u al or t h e s am e

an y

on ef r om

* t h e

gr a ph i s h or i z on t al

* t h e

p o p ul a t i on d o e s n o t c h an g e

1

c1

/ 2 j

2 / 5 d

b


r e


d

on o t a c c e p t ‘ t h e y s t o ph av i n g of f s p

r i n g’ or ‘ t h e y

s t o pm ul t i pl y i n g’

a c c e p t ‘ t h e p o p ul a t i o

n b e gi n s t ol ev el of f ’

* C a

n

y on ef r om

* t h e

s l o p e of t h e gr a ph b e c om e s l e s s s

t e e p

* t h e

gr ow t h of t h e p o p ul a t i on s l ow s d own

1

b 1

/ 2 j

2 / 5 d

b


r e


a c c e p t ‘ t h e gr a ph i s s t e e p e s t ’

a c c e p t ‘ t h el i n ei s s t e

e p er ’

a c c e p t ‘ i t i s v er y s t e e

p’

* B t h

e

gr a ph i n c r e a s e s m o s t s t e e pl y

1

a1

/ 2 j


28/56


T i e


2 8

Q

N o

1 0

T i er

5 –7

P ar t

M ar k

A n s

w er

A c c e p t

A


T o t al

5

i f


n om ar k

‘ t h e y n e e d t o b e d i g e s t e d or b r ok en d own’ i s

i n

s uf f i c i en t

a c c e p t ‘ s o pr o t ei n s o

r t h e y c an b e a b s or b e d ’

* am

i n o a c i d s

✓

an y

on ef r om

* pr o t ei n s c ann o t b e a b s or b e d

* pr o

t ei n s ar e t o o b i g t o p a s s t h r o u gh t h

el i ni n g of

t h e

i n t e s t i n e or b l o o d v e s s el s

* am

i n o a c i d s c an b e a b s or b e d

* am

i n o a c i d s c an p a s s t h r o u gh t h ew al l of t h e

i n t e s t i n e or b l o o d v e s s el s

* am

i n o a c i d s ar e s m al l en o u gh t o b e a

b s or b e d

* t o

m ak e t h em s ol u b l e

1 1

d i

2 / 2 b

d i i

2 / 2 c

d

on o t a c c e p t ‘ t h e enz y m ew a s k i l l e d

’

* i t or t h e enz y m ew a s d e s t r o y e d or d e

n a t ur e d

1

c

‘ b

e c a u s e t h e g el a t i nh a d b e en c h o p p

e d u p’ i s

i n

s uf f i c i en t

a c c e p t ‘ t h e enz y m e c am ei n t o c on t a c t wi t h m or e

of t h e g el a t i n’

a c c e p t ‘ t h e s ur f a c e o

r ar e aw a s b i g g er ’

* t h e

r ew a s al ar g er s ur f a c ef or t h e enz y m e t o a c t

on

1

b 2

/ 2 b

an y

on ef r om

* i t i s t h e t em p er a t ur e of t h eh um an b o d

y or t h e

s t o

m a c h

* t h e

enz y m e or p e p s i nw or k s b e s t a t t h

a t

t em

p er a t ur e

1

a1

/ 2 e


29/56


T i e


2 9

Q

N o

1 1

T i er

5 –7

P ar t

M ar k

A n s

w er

A c c e p t

A


T o t al

5

b

o t h an s w er s ar er e q ui r e d f or t h em ar k

d

on o t a c c e p t ‘ t h e s am en um b er of m

ol e c ul e s i s

t h

er e’

‘ t h e s am e am o un t of el em en t s ’ i s i n s uf f i c i en t

a c c e p t ‘ t h er a t i oi s al w a y s 1 P t o2 Q s ’

a c c e p t ‘ t h e a t om s or p ar t i c l e s h av e j oi n e d ’

a c c e p t ‘ t h e el em en t s

h av e j oi n e d ’

a c c e p t ‘ t h e s am en um b er of a t om s i s pr e s en t ’

a c c e p t ‘ t h e s am e p ar t i c l e s or s am en um b er of

p ar t i c l e s ar e pr e s en t

’

a c c e p t ‘ t h er ei s t h e s

am e am o un t of e a c h

el em en t ’

an y

on ef r om

* a c

om p o un d or an ew

s u b s t an c eh a s

b e en

f or

m e d

* R

or t h e pr o d u c t i s an ew

s u b s t an c e

* s u b s t an c e Q: ox y g en

* s u b s t an c eR : c ar b on d i ox i d e

* t h e

s am en um b er s of e a c h t y p e of a t o

m ar e

pr e

s en t

1 1 1

b i

3 / 1 e

b i i

3 / 1 e

b i i i

3 / 2 g

* B

* D

1 1

ai

3 / 1 g

ai i

3 / 1 e


30/56


T i e


3 0

Q

N o

1 2

T i er

5 –7

P ar t

M ar k

A n s

w er

A c c e p t

A


T o t al

5

uni t s ar en o t r e q ui r e d i n t h e t a b l e

i g

n or ei n c or r e c t uni t s

a c c e p t a t a b l ei nwh i c h t h er ow s r a t h er t h an t h e

c ol umn s ar el a b el l e d

a c c e p t ‘ w ei gh t ’ f or m

a s s

a c c e p t

* an

y a p pr o pr i a t e t a b l ei nwh i c h t h er e s ul t s c an

b e

r e c or d e d s u c h a s

or

1

b 1

/ 2 i

aw ar d am ar k f or an y s ui t a b l er i g o ur

i n t h e

pr o c e d ur e or i d en t i f i c a t i on of an y c on

t r ol v ar i a b l e

‘ t h e a t m o s ph er ei t i s h e a t e d i n’ i s i n s uf f i c i en t

a c c e p t ‘ wh e t h er t h em a s s of m e t al i n c r e a s e s or

d e c r e a s e s or s t a y s t

h e s am e’

a c c e p t ‘ w ei gh t b ef or e an d af t er b ur ni n g’

a c c e p t ‘ k e e p al i d on

t h e c r u c i b l e’

a c c e p t ‘ s t ar t i n gm a s s of m e t al ’

a c c e p t ‘ m a s s of t h em e t al ’

a c c e p t ‘ t h e s am e c r u

c i b l e’

a c c e p t ‘ en o u gh t i m e

f or t h er e a c t i on t o o c c ur ’

a c c e p t ‘ s uf f i c i en t h e a

t f or b ur ni n g t o o c c ur ’

a c c e p t ‘ b ur n t h em e t

al s f or t h e s am el en g t h of

t i m e’

a c c e p t ‘ m a s s wi l l i n c

r e a s e’

a c c e p t ‘ w ei gh t i n c r e a

s e’

* t h e

m e t al

an y

on ef r om

* t h e

c h an g ei n t h em a s s of t h e c on t en t

s of t h e

c r u

c i b l e af t er b ur ni n g

* t h e

c h an g ei n t h em a s s of t h e c r u c i b l e

an d i t s

c on t en t s af t er b ur ni n g

* m a

k e s ur e al l t h e pr o d u c t i s w ei gh e d

* an

i n c r e a s ei n t h em a s s f ol l owi n g b ur n

i n gf or al l

t h r

e em e t al s

1 1 1 1

a1

/ 2 a

1 / 2 d

1 / 2 e

1 / 1 c

c h a

n g ei nm a s s

m e t al 1

m e t al 2

m e t al 3

m e t al

g ai n or l o s s or c h an g e

i nm a s s

m e t al

m a s s a t

m a s s af t er

t h e s t ar t

b ur ni n g


31/56


T i e


3 1

Q

N o

1 3

T i er

5 –7

P ar t

M ar k

A n s

w er

A c c e p t

A


T o t al

5

‘ v

i b r a t i on s d e c r e a s e’ i s i n s uf f i c i en t

aw ar d on em ar k f or aw av ewi t h a s m

al l er

am pl i t u d e

aw ar d on em ar k f or aw av ewi t h t h e s am e

f r e q u en c y

aw ar d t h em ar k s f or aw av ewi t h t h e

c or r e c t

am pl i t u d e an d f r e q u en c y b u t wh i c h i s

n o t c en t r e d

on t h emi d d l el i n e of t h e gr i d or wh i c h i s n o t i n

ph a s ewi t h t h e d r awnw av e

t h

em ar k s m a y b e aw ar d e d f or aw av

e d r awn on

S

y l v i a’ s gr i d

a c c e p t ‘ s om e of t h e s o un d i s a b s or b e d b y t h e ai r ’

a c c e p t ‘ t h e am pl i t u d e d e c r e a s e s ’

* t h e

en er g y or t h e s o un d i s m or e s pr e a d o u t

*

1 2

b i

4 / 3 j

b i i

4 / 3 k

an s w er s m u s t b ei n t h e c or r e c t or d er

al l t h r e e an s w er s i n t h e c or r e c t or d er ar e

r e


a c c e p t ‘ l i gh t ’

a c c e p t ‘ v i b r a t i on’

a c c e p t ‘ s o un d ’

a c c e p t 1 0 2 0

a c c e p t ‘

’

a c c e p t ‘ 3 4 0

* P a

ul

J am e s

S y

l v i a

* 3

1 1

ai

4 / 3 i

ai i

4 / 2 a


32/56


T i e


3 2

Q

N o

1 4

T i er

5 –7

P ar t

M ar k

A n s

w er

A c c e p t

A


T o t al

5

c on s e q u en t i al m ar k i n g a p pl i e s

a c c e p t t h e an s w er t o

ai i i + 0 .2

* 0 . 3

1

b

uni t n o t r e q ui r e d

t h

em ar k f or t h e uni t m a y b e aw ar d e d h er ei f n o t

gi v eni n p ar t ai



a c c e p t ‘ 0 .2 ×

1 0 ’

a c c e p t ‘ c mN ’

a c c e p t ‘ 0 . 0 2 N m’ f or

b o t h m ar k s

a c c e p t ‘ 0 . 0 2 N m’

a c c e p t ‘ t h e s am e’

a c c e p t t h en um er i c al an s w er t o ai

a c c e p t t h en um er i c al an s w er t o ai i ÷

2 0

a c c e p t t h en um er i c al an s w er t o ai ÷

2 0 i f ai i

h a s b e en omi t t e d or

i f t h e an s w er gi v en t o ai i i s

‘ t h e s am e’

* 2

* N c

m

* 2 (

N c m )

* 0 .1

1 1 1 1

ai

4 / 2 f

ai i

4 / 2 f

ai i i

4 / 2 f


33/56

2 0 0 5 K S 3 S c i

key stage 3 ks3 science markscheme 2005

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