HENRY PARK PRIMARY SCHOOL2011 SEMESTRAL EXAMINATION 2

SCIENCEPRIMARY 3

Duration of Paper 1 h 30 min

Name:

Class: Pr 3

_( )

Parent's Signature:

SectionA fdO marlre)

mLTI^0^^ tC 2?'f0Ur 0ptions are *•* One of them is the correct answerMateyourchoice (1,2,3 or4). Shade the cormctoval (1,2.3 or41 on th. c^?™*!^

1. Which of the following statements about living things is correct?

(1) They feed on smalleranimals.(2) They can move from place to place,(3) They can respond to changes around them.(4) They reproduce by giving birth to their young.

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2. Afi classified some animals into two groups as shown.

Group Y Group Z

Which one ofthe following animals could be placed together with the animals inGroup Y?

d) (2)

(3) (4)

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3. JuBe classified 4 plants in a group as shown below.

Her classmate commented that Plant Bdoes not belong in the groupWhich one of the following explains why Plant Bdoes not belong?

(1) Plant B has bigleaves.(2) Plant B has weak stems.(3) Plant B does not have fruits.(4) Plant B does not have flowers.

The flowchart below shows the characteristics of Organisms A, B, Cand D.

I Organism

Does it make its own food? \~ j__l

Yes

Does it reproduce from seeds?UQ.

B

Yes

Is it a shrub? ij__

Yes

Which organism. A, B. Cor Dbest represents abird's nest fem?

(1) A(2) B(3) C(4) D

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Plant D

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it

5. Which ofthe following will likely show signs of fungi growing on it after a few days?

A wet log (2) Toasted bread

(3) A dried leaf (4) Dry writing paper

John used the statements below to describe Material X.

A: It is waterproof.B: it is non-magnetic.C: It is transparent

Which of the following material best represents Material X?

(1) Cloth(2) Steel(3) Paper(4) Glass

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7. The flowchart below showstha characteristics of Materials p'q,R and S.

8.

Start Material

IIs it flexible?

No

Is itwaterproof?

No

Which material, P, Q, R orS ismost likely tobe wood?

(1) P(2) Q(3) R(4) S

The table below shows four materials, objects made of these materials and twoproperties that make them suitable for use.

Which material has incorrect reasons for its use in making the following objects?Object Material Reasons

(1) Knife Metal " Strong- Hard

(2) Clothes Fabric - Light• Flexible

(3) Spectacles Glass • Breaks easily• Flexible

(4) Raincoat Plastic • Flexible• Waterproof

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Timothy placed a safety pin in 4 containers made of different materialsHe wanted to find out if the same magnet would be able to attract the safety pin outof the containers when he moves the magnet without touching the containers.

magnet

iron

container

safety pin4C&

Set up A

magnet

glosscontainer

safety pin

Set up C

magnet

paper,

container

safety pin

Set up B

magnet

styrofoamcontainer

safety pin<3*

Set up D

In which ofthe following set ups the magnet will not attract the safety pin?

(D A(2) B(3) C(4) D

10. Balalearnt that a nailcan be made into a magnet bystroking itwith a magnet

Which is the correct way of doing it?

(1) (2)

(3)

G*L(4)

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11. Shirleyputs a wooden rod throughthree ring magnets as shown below.

—»• ^Wooden

rod

I B

Wooden table top D

Which one of the following correctly labels the poles A, B, C and D?

A B C D

(1) North South North South

(2) North South South South

(3) South North North North

(4) South North North South

12. The flow chart below shows the characteristics of Material V.

START

lNOCan the material

be attracted by amagnet?

Which of the following could MaterialV be?

(1) Iron(2) Gold(3) Nickel(4) Cobalt

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Is the material atype of metal?

YES

*3

13. Ivy made atoy boat with amagnet in itShe held object X near the boat and theboat moved away from her.

ObjectX is likely to be a .

(1) magnet(2) steel ruler(3) copper nail(4) silver bracelet

14. The diagram below shows a magnet.

If the magnet is placed in abox of paper clips, which part of the magnet, A, B, CorD, will attract themostnumber of paper clips?

d) A(2) B(3) C(4) D

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15. The table below shows the characteristics of some objects.

^^Characteristics

Objects ^^"""--^Is it a metal? Is it magnetic? Is it waterproof?

A • • XB • X •

e X X •

Theclassification chart below showshow objects A, B and C aregrouped.

Based only on the information given above, which ofthe following can heading R be?

(1) Metal(2) Magnetic(3) Non-magnetic(4) ^Waterproof

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16. The following shows the stages in the life cycle ofabean plantStudy the diagrams and answer questions 16 and 17.

-£- -<s>- -£•Q

Which of the following shows the fife cycle of the bean plant in the correct order?(1) Q.R.P.S(2) Q.P.R.S(3) R.S.P.Q(4) R,Q,S,P

17. At which stage of the life cycle above is sunlight needed for the plant to make food?(1) Sonly(2) Pand Sonly(3) P, Rand Sonly(4) P, Q, R and S only

18. Amanda wishes to carry out an experiment to find out whether kidney bean seeds orgreen bean seeds germinate faster.

Which of the following variables must she keep the same for this experiment?

A: The type of soilB: The type of seedsC: The amount ofwater given to the seedsD: The temperature of the location where seeds are placed.

(1) A and Conly(2) Band Donly(3) A, Band Donly(4) A,Cand Donly

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19. Which of the following shows the life cycle of a cockroach?

(1) Adult (2) Adult

Larva Egg Pupa Egg

Pupa Nympl

(3) (4)

Egg Adult Egg Adult

Nymph Pupa

( • )

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20. The diagram below shows the fife cycle ofabutterfly and amosquito.

Life cycle of a butterfly Ufe cycle of a mosquito

Which of the following statements about their life cycles are most likely correct?

A: The mosquito spends part of its life in the water but the butterfly does not2£"«3£"*•* ?J8?^ bUtterf,y WhHe *• ""l"* has ^

C: Both the larva ofthe butterfly and the mosquito go through the process ofmoulting.

D: During the life cycle of each animal, only the mosquito stops feeding duringsiage.

(1) A and B only(2) A and C only(3) Band Donly(4) B, Cand Donly

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End of Section A

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Name: ( ) Class: Pr3

Section B112 marks)For each question from 21 to 26, read the instructions carefully and write your answer in the spacesprovided. ^

21. Siti caught some organisms from her home garden and classified them into two groups asshown below.

Write suitable headings for Group AandGroup B.

Group A:

Group B:

[2m]

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22. Label the body parts ofOrganism Ydrawn below.[2 m]

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23. Faizalcollectedsome objects to find out iftheywould float or sink as shown below.

a)

b)

Buctot

tpoon

Herecorded the mass ofthe objects ma table.

Tick (V) 'Float* or'Sink' in therespective columns for theobjects a<xx>rding toFaizal'sexperiment above. pm]

Objects Mass Tloat SinkClay boat 50 grams *

Clay ban 50 grams

Steel nail 20 grams

Steel spoon 15 grams

Plastic duck 10 grams

Plastic cup 5 grams

Faizal made thefollowing conclusions based onhisexperimentabove.

Tick(V) True* or 'False' in the respective columns for me folk^ng conclusions.

Conclusions(9 Objects made ofclay will sink.<n) Themass ofan object will determine ifit

floats or sinks in water.

True False.~----«^p^

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24. Classifythe foUowing objects intothe tablebelow.

I

Chair Compass Light Switch Refrigerator

Make use of magnets Do not make use of magnets— y*-

.

25. Read each statement and put a tick in the box to show whether ft is tjue or false.

.- Statement True False

(a) A magnet is strongest at its pole_;

(b) The bigger a magnet, the stronger it is.

(c)The north pole of a magnet is always strongerthan its south pole.

(<0A magnet comes to rest in a north-southdirection when turned freely.

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26. Trie diagram betowshows a youngseedlmgof a bean planL

a) Name the parts marked 'A' and 4C\

A*

C:

b) During thegrowth oftheseed, which part, Bor C, appears first?

End of Section B

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Name:. / v -. __• 1 ) Class: Pr 3

Section C128 marks)Write youranswers toquestions 27 to 34 in the spaces given.

27. ^thecharacteristfccf^^

(a) The height ofa hibiscus plant increased by3cm in aweek.

Living things

(b) Some eggsare found in thepigeon's nest

Living things

(c)Adeernjnningawayfromalion.

Living things,

(d) Jonathan touchedaglass ofhot miflc and quickly pulled his hand away.Living things

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28. The diagram below shows two groups ofplants.

(a)Give suitable headings for Group Aand Group B.

Group A

Group B:

b) Which group should "moss" beput in?

c) How do plants in Group Breproduce?

PI Rr RA? ?ftl IPajtc I9i»r25

[2]

[1]

[11

I I

r$

He added 10g wights to each string as shown below, one atatti^^Sthread broke.

D n

Retort stand

C

He then recorded his results below.

Number of 10g weights beforethread breaks

Thread A

O'Thread

1 10g Weight

Thread B Thread C Thread D

12 15

a) Arrange the threads A B.Cand Ofrom strongest toweakest [1m]

b) Based on Bemie's experiment, whicn mread(s) can Be used to sup^[1m]

c) Name 2things that Bemie has to keep the same for afair experiment

CO

(H)

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[2m]

30. Pei Lin set up 4 magnets A, B, C and Das shown below. The magnets are hanging fromstrings of two different lengths. A plastic tray of Iron pais is placed below the magnets.Different numbers of pins are attractedto the magnets.

B

pin*

plastic tray /\ W

a) Name the magnet(s) that is/ape strongerthan A. [1m]

b) Pei Lin concluded that C is definitely a strongerinagnetthan B. Pei Lm's Science Teachertold herthatshe is notright Using information given inthe diagram, explain whyherteacheris correct jimj

c) Desert clearly whatmustbe done to magnets BandC inthe set up aboveto determinecorrectly which of the 2 magnets(BorC)is stronger. [1m]

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31. totehadabarmag^riiagnetA.andaro^which rriagr^^ stronger. She placed magnetAon one end ofthe nSerandI s^Whedapaper dip along the niter towards the magnet until the dip was attrad^^^^She repeated the steps using magnet B.

mvgnetA<r

••* AM mM ftJf mm MM magneto *M*.'**M±*tM

She then measured the distance at which the paper cH» are attracted to magnets Aand Brespectively.

Magnet

Distance at which the paper dipis attracted to magnet 4cm

B

3cm

a) Colour the corred numberofboxes to srwwtheabove results tor rnagriets AandB. [2m]

— 0 •

CL

feE 52» 4

•

2*c

Z E 3-

"5 "O 2 •

*

a 2o 2 1 -

1 o\ 1 •

B

Magnet

b) Which magnet is stronger?

c) Explain your answer in (b).

PlSo.5?A?90ll

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[1m]

[1m]

32* e^^^electromagnet He sets up two arrangements asshown below. «rengm or

10 turns20 turns

a) Give one reason why Ethan is not conducting afair test

b) N^«wootherVeriab!es^

(0 _

an

[1m]

[2m]

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33 2_2&^^"^*^*^»c-^„,questions that follow.

advK

Life Cycle ofAnimal X

a) How many stages are there in the Dfe cycle ofAnimal X?

answer the

[1m]

b) Tne larva goes through aprocess catted moulting. Explain why tras process is »nportant [1m]

c)

John found the larva ofAnimal Xon his pet dog and his rrwttier asked him to get rid of thembefore they develop into adults.

Give areason why John should get rid ofAnimal Xbefore ft develops into an adult [1m]

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34. Ttefoflcwirigdisriesweresetuptocc

p-<P . "^i . iff!

Math

A-piacodatt&rqpanwtasow ~*—«—«—n«d

B-laptln<fcifce<ei>a*itf

C -jtfacatfnearoptn window

a) In which ofthe above setmps (A. Bor C) will the seeds germinate?

b) Invmk^setHip/swaitheseedsnotgenninateatall?

c) Give areason for your answer fn(b).

-Endofpaper-

Sotters: Mdm Urn YeowKhimMsTanYingHui

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/e06 'o^"EXAM PAPER 7011

SCHOOL : HENERYPARKSUBJECT: PRIMARY3 SCIENCE

TERM SA2

Ql3

Q18

Q21

Q19

Q32

Q20

Q42

Q51

Q64

Q71

Q83

Q91

QIO2

Qll4

Q122

Q131

Q141

JQ151

Q161

Q172

4 3 2*

21) G

22) (a

roupi

i)thoi

\: has 6 legs Group B:has more than 6 tegs

rax (b) abdomen

23a) Clay Boat floatClay ball sinkSteel nail —sinkSteel spoon — sinkPlastic duck -- floatPlastic cup —float

23b) (i) false

24)

(ii) false

Make use of magnets Do not make us ofmagnets

Compass

RefrigeratorLight switchchair

25) (a)True (b) False (c) False

26a) A: seed leaf

26b) Parte

27 a) Living things growc) living thingsrespond to hunger

(d)True

C: roots

(b) living things reproduce(d) Living things respond to changes

u

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28a)Group A: reproduce by sporesGroup B: reproduceby seeds

28b) Group A

28c) Group Breproduce by seeds

29a)Thread O, thread C, thread A,thread B

29b) Thread C and D

29c)(l) He has touse thesame lOg weights,(ii) He hasto usethe thread length

30a)B,D,C

30b) Cismuch closer to theiron pins, soCcan attract more.

30c) they should be hanged with the same length string.31a)

31b) Magnet A

31c) Magnet acan attract the paper dip at afurther distance than magnet B.

32a) He did not use the same numberofbatteries for both experiments.

32b) (0 use the same type ofbatteries,(ii) use the same type ofnails.

33a) Four

33b) If thelarva does notmoult, itcannot grow bigger.

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33c) It will start bitting the dog.

34a) AandB

34b) set-up C

34c)The soilis dryand any moisture found in the set-up will evaporate quickly.

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