external measurement Ωƒ∏y of student …...grade ∞`` üdg science 9 Ωƒ∏y test instructions...

∞``°üdGGrade

Science

9Ωƒ∏Y

Test Instructions

Check that this question booklet has your correct details printed on it (eSIS number, name, date of birth, school name, class). If not, write the correct information neatly in the spaces provided.You are allowed 80 minutes for this test.You must not use a calculator.There is a periodic table on the back page.

There are two types of question:

Type 1: Multiple choice (29 questions)Each question has four possible answers. Only one is correct.Use only a pencil to shade in the answer bubble of your choice.If you make a mistake then rub out your answer completely and shade in the bubble of your new answer.

Type 2: Open response (8 questions)Write your answers in the spaces provided within the test booklet.Do not write outside the answer spaces.

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ïjQÉJ ,º°S’G ,eSIS ò«ª∏àdG ∞jô©J ºbQ) ∂H á≤∏©àŸG áë«ë°üdG ÖàcÉa ,∂dòc øμj ⁄ ¿EG .(∞°üdG ,á°SQóŸG º°SG ,IO’ƒdG

.É¡d ¢ü°üîŸG ÆGôØdG ‘ í°VGh πμ°ûH áë«ë°üdG äÉeƒ∏©ŸG.á≤«bO 80 QÉÑàNEÓd ¬H ìƒª°ùŸG øeõdG

.QÉÑàN’G ∫ÓN áÑ°SÉ◊G ádB’G ΩGóîà°SÉH íª°ùj ’.á∏Ä°SC’G ábQh ô¡X ≈∏Y …QhódG ∫hó÷G øY káî°ùf óŒ

:á∏Ä°SC’G øe ÚYƒf QÉÑàN’G Gòg øª°†àj(’GDƒ°S 29) Oó©àe øe QÉ«àN’G á∏Ä°SCG :∫hC’G ´ƒædG

.áë«ë°U É¡æe §≤a IóMGh áHÉLEG .á∏ªàfi äÉHÉLEG ™HQCG ∫GDƒ°S πμd »àdG äÉHÉLE’G ôFGhO π«∏¶àd §≤a ¢UÉ°U qôdG º∏b ΩGóîà°SG AÉLôdG

.ÉgQÉàîJIôFGO πq∏X qºK πeÉμdÉH áHÉLE’G í°ùÃ º≤a ,∂àHÉLEG ‘ äCÉ£NCG GPEG

.Iójó÷G ∂àHÉLEG (á∏Ä°SCG 8) áMƒàØŸG äÉHÉLE’G äGP á∏Ä°SC’G :ÊÉãdG ´ƒædG

.QÉÑàNE’G Öq«àc ‘ É¡d á°ü°üîŸG äÉZGôØdG ‘ ∂JÉHÉLEG ÖàcCG.É¡d ¢ü°üîŸG ÆGôØdG êQÉN áHÉLEG áqjCG ¿ qhóJ ’

School

:eSIS No.

Family name

Father's name

Date of birth First name

Class

External Measurement

of Student Achievement

March 2012

»LQÉÿG ¢SÉ«≤dG ÜÓ£dG π«°üëàd

2012 ¢SQÉe

6091-01

*1609199999-2*1609199999-2

-

Ωƒ∏Y – ™°SÉàdG ∞°üdG

2

Aõ÷G

Gòg ‘

Öàμ

J ’

.(NaCl) ΩƒjOƒ°üdG ójQƒ∏c Ö qcôe (Cl) Qƒ∏μdGh (Na) ΩƒjOƒ°üdG π qμ°ûj 1

?CÉ°ûf …òdG §HGÎdG ´ƒf Ée

á«ªgÉ°ùJ á£HGQ

á«fƒjEG á£HGQ

á«fó©e á£HGQ

á«fhÎμdEG á£HGQ

áæeBG √É«Ã ⁄É©dG AÉëfCG πc O qhõj √É«ŸG í«°TÎd kÉeÉ¶f AÉ°†ØdG AÉª∏Y Q qƒW 2

.Üöû∏d áØ«¶f

?AÉ°†ØdG ‘ Ió«Øe É«LƒdƒæμàdG √òg ¿ƒμJ ób GPÉŸ

.á«FÉ°†ØdG äÉª¡ŸG ‘ É¡eGóîà°SG πÑb √É«ŸG í«°TôJ Öéj

.¢VQC’G ≈∏Y »àdG √É«ŸG ç qƒ∏J øe ÈcCG áYöùH AÉ°†ØdG ¤EG òNDƒJ »àdG √É«ŸG ç qƒ∏àJ

AÉ°†ØdG ‘ áØ«¶ædG √É«ŸG OÉéjEG ¿C’ á«FÉ°†ØdG äÉª¡ŸG ‘ √É«ŸG ΩGóîà°SG IOÉYEG Öéj

.áÑ©°U áª¡e

πÑb øe É¡cÓ¡à°SG πÑb äÉÑfòŸG øe IPƒNCÉŸG √É«ŸG í«°TôJ Öéj

.AÉ°†ØdG OGhQ

.º«≤à°ùe QÉ°ùe ≈∏Y áYöùH É¡JOÉ«≤H ¥ÉÑ°S IQÉ«°S QÉÑàNG …ôéj 3

?IQÉ«°ùdG ´QÉ°ùJ øe ójõ«°S Ò«¨J …CG

∑ôëŸG Iƒb ÊóJ

IQÉ«°ùdG á∏àc ÊóJ

QÉ°ùŸG áaÉ°ùe IOÉjR

OƒbƒdG ¿GõN ºéM IOÉjR

6091-02

Grade 9 Science

3

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1 Sodium (Na) and Chlorine (Cl) form a compound Sodium Chloride (NaCl).

What is the type of bond formed?

Covalent

Ionic

Metallic

Electronic

2 Space scientists developed a water filtration system that provides safe, clean drinking

water all over the world.

Why would this technology be useful in space?

Water must be filtered before being used for space missions.

Water taken into space is more easily polluted than water on Earth.

Water on space missions must be reused because getting clean water in space is

difficult.

Water taken from comets needs to be filtered before being consumed by

astronauts.

3 A racing car is tested by accelerating it along a long straight track.

What change would increase the acceleration of the car?

Decrease the force of the engine

Decrease the mass of the car

Increase the length of the track

Increase the size of the fuel tank

6091-03


4

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≈∏Y AÉæH ¿ƒμdG ïjQÉJ ájGóH ‘ âq“ »àdG çGóMC’G ¢†©H ‹ÉàdG ∫hó÷G qÚÑj 4

.á«ª∏Y ájô¶f

1234

QÉéØfGäÉfƒJhÈdG π tμ°ûJ äÉjQòdG π tμ°ûJöUÉæ©dGhΩƒéædG π tμ°ûJ ájGóH

¿ƒμdG Óμ°û«d πMGôŸG √òg ó©H ÉKóM øjôNBG ÚKóM uº°S .Ωƒ«dG

5

?áKhQƒŸG áØ q°üdG ∫ƒM Gòg Ö n°ùqædG qπé°S øe èpàæà°ùf ¿CG Éææ pμ oÁ GPÉe

.AGƒ°S qóM ≈∏Y çÉfE’Gh QƒcòdG ≈∏Y áKhQƒŸG áØ q°üdG √òg ÒKCÉJ ô n¡¶j

.∫É°ùfCG 4 øe §≤a 1 ≈∏Y áKhQƒŸG áØ q°üdG kIOÉY ô n¡¶J

.¢ùæ÷ÉH á£ pÑJôeh IóFÉ°S áKhQƒŸG áØ q°üdG √òg ¿ƒμJ ¿CG Ö péj

.á« uëæàe áKhQƒŸG áØ q°üdG ¿ƒμJ ¿CG Ö péj

6091-04

Grade 9 Science

5

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4 The diagram shows some of the events occurring in the early history of the universe,

according to one scientific theory.

1 2 3 4

Explosion Protons formAtoms and elements

formStars begin to form

List two more events that must have happened after these steps to create the universe

today.

5

What can we conclude from this pedigree about the inherited trait?

Male and female offspring are affected equally by this trait.

Usually only 1 out of every 4 offspring display an inherited trait.

This inherited trait must be dominant and sex-linked.

The inherited trait must be recessive.

Key

= male with inherited trait

= female without inherited trait

6091-05


6

Aõ÷G

Gòg ‘

Öàμ

J ’

6

∞°üdGΩƒjOƒ°üdGQƒ∏ØdGΩƒ«æpŸC’GΩƒ«°ù«æ¨ŸG

1Na+Fl–Al2+Mn3–

2S2+Fl7+Al4–Mg2–

3Na+F–Al3+Mg2+

4S2–Fl7–Al3–Mn3+

?IQƒcòŸG öUÉæ©∏d äÉfƒjC’G øë°Th í«ë°üdG õeôdG qÚÑj ∞°U q…CG

1 ∞°üdG

2 ∞°üdG

3 ∞°üdG

4 ∞°üdG

.¢VQC’G ≈∏Y IÉ«◊G ó«b ≈∏Y AÉ≤Ñ∏d á«◊G äÉæFÉμdG É¡LÉà– »àdG IQGô◊Gh Aƒ°†dG ábÉW ¢ùª°ûdG è pàæJ 7

.¢ùª°ûdG ‘ á`qjhƒf äÓYÉØJ øY ábÉ£dG √òg èoàæJh

?¢ùª°ûdG »g Ée

I qô›

Öcƒc

áª‚

ábQÉN áª‚

º°ù÷ ÖqÑ°ùoJ »àqdG á«aÉ q°üdG I qƒ≤dG QGó≤e Ée ,ácôë∏d øJƒ«f ÚfGƒ≤d É k≤a nh 8

?5cm/s/s √Qób ÉkYQÉ°ùJ 2ckg ¬à∏àc

2N

5N

2.5N

10N

6091-06

Grade 9 Science

7

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6

Row Sodium Fluorine Aluminium Magnesium

1 Na+ Fl– Al2+ Mn3–

2 S2+ Fl7+ Al4– Mg2–

3 Na+ F– Al3+ Mg2+

4 S2– Fl7– Al3– Mn3+

Which row shows the correct symbol and charge for ions of the elements listed?

Row 1

Row 2

Row 3

Row 4

7 The Sun produces the light and heat energy that living things need to survive on Earth.

This energy is produced in nuclear reactions inside the Sun.

What is the Sun?

A galaxy

A planet

A star

A supernova

8 According to Newton's Laws of Motion, which net force will accelerate

a 2 kg object at 5 m/s/s?

2N

5N

2.5N

10N

6091-07


8

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.•ƒ¨°†ŸG AGƒ¡dG ñhQÉ°U ôeÉY ≥∏WCG 9

.É¡àqÑã«d IóYÉb ≈∏Y áLÉLõdG ™°Vh ºK ∂«à°SÓÑdG øe IÒÑc áLÉLR ‘ AÉŸG ™°Vh

.Ωób áîØæe ΩGóîà°SÉH áLÉLõdG ‘ AGƒ¡dG qï°V ºK

.AGƒ¡dG ‘ áLÉLõdG â≤∏£fG ,IóYÉ≤dG øe áLÉLõdG â∏aCG ÉeóæY

.ácôë∏d ådÉãdG øJƒ«f ¿ƒfÉb ñhQÉ°üdG ¥Ó£fG øgÈj ∞«c qöùa

6091-08

Grade 9 Science

9

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9 Amer launches an air bottle rocket.

He puts water in a large plastic bottle then puts it on a base to hold it.

He then pumps air into the bottle using a foot pump.

When he releases the bottle rocket from the base it launches into the air.

Describe how the rocket launch demonstrates Newton’s third Law of Motion.

Plastic bottle

Water

Base

Foot pump

6091-09


10

Aõ÷G

Gòg ‘

Öàμ

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.…hƒf ¢†ªM A…õL ‹ÉàdG §£îŸG πãÁ 10

?…hƒædG ¢†ª◊G Ö«côJ í°VhCG á≤jô£H qÚÑj ¿CG §£îŸG Gò¡d øμÁ ∞«c

.êhOõe ¿hõ∏M πμ°T ≈∏Y A…õ÷G q∞d

.Ú£N ¤EG A…õ÷G π°üa

.ô¨°UCG AGõLCG ¤EG A…õ÷G ™«£≤J

.¢ùcÉ©ŸG √ÉŒ’G ‘ A…õ÷G ôjhóJ

.áªéæd á∏ªàμe ÒZ IÉ«M IQhO §£îŸG qÚÑj 11

?§£îŸG πªμj º°ùL q…CG

P

P

P

P

P

P

P

P

P

P

P

P

T

T

T

C

C

A

T

A

A

A

G

G

?

6091-10

Grade 9 Science

11

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10 This diagram represents a molecule of DNA.

How can this diagram more accurately show the structure of DNA?

Twist the molecule into a double helix

Separate the molecule into two strands

Shorten the molecule into smaller pieces

Turn the molecule in the opposite direction

11 The diagram shows an incomplete star life cycle.

Which object completes the diagram?

P

P

P

P

P

P

P

P

P

P

P

P

T

T

T

C

C

A

T

A

A

A

G

G

Stellar NebulaRed Supergiant

Supernova

?Neutron

Star

Black hole

Average star Massive star Planetary nebula Red giant

6091-11


12

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Gòg ‘

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J ’

.‹ÉàdG QÉÑàN’G óYCÉa π©ØdG OQh π©ØdG á«FÉæK Èàîj ò«ª∏J ¿Éc 12

?QÉÑàN’G Gòg ‘ π©ØdG qOQh π©ØdG áq«FÉæK ƒg Ée

¿ƒdÉÑdGh AGƒ¡dG

Ohó°ûŸG §«ÿGh AGƒ¡dG

Ò°ü©dG á q°UÉeh Ohó°ûŸG §«ÿG

Ohó°ûŸG §«ÿGh ¿ƒdÉÑdG

»nàj sQPh Ωƒ«°ùdÉc I qQP §£îŸG qÚÑj 13

π qμ°ûàd kÉq«FÉ«ª«c á£ÑJôe Qƒ∏c

.Ωƒ«°ù∏μdG ójQƒ∏c

.§HGhQ π qμ°ûàd á≤jô£dG √ò¡H Qƒ∏μdGh Ωƒ«°ùdÉμdG äG qQP πYÉØàJ GPÉŸ qöùa

Ca+2

Cl–

Cl–

6091-12

Grade 9 Science

13

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12 A student was testing action and reaction pairs, and set up the investigation shown.

What is the action/reaction pair in this scenario?

The air and the balloon

The air and the suspended string

The suspended string and the straw

The balloon and the suspended string

13 The diagram shows a calcium atom and

two chlorine atoms bonding chemically

to form calcium chloride.

Explain why calcium and chlorine atoms react this way to form bonds.

suspended stringstraw

balloonair

Ca+2

Cl–

Cl–

6091-13


14

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Gòg ‘

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J ’

?»KGQh qÒ¨J ¤EG …ODƒj ób á«dÉàdG ä’ÉªàM’G øe …CG 14

á«ZÉeO á«∏N ‘ qÒ¨J

á«Hóg á«∏N ‘ qÒ¨J

ájó∏L á«∏N ‘ qÒ¨J

q…ƒ`næ ne ¿Gƒ« nM áq«` p∏` nN ‘ qÒ¨J

?äÉæ«÷Gh …hƒædG ¢†ª◊Gh (äÉ« q̈ Ñ°üdG) äÉeƒ°SƒehôμdG ÚH ábÓ©dG »g Ée 15

.…hƒædG ¢†ª◊G π qμ°ûjh áæ«L ƒg Ωƒ°SƒehôμdG

.äÉæ«L IóY ‘ º q¶æe ƒgh …hƒædG ¢†ª◊G øe Ωƒ°SƒehôμdG ∞qdCÉàj

.…hƒædG ¢†ª◊G øe IóY äÉÄjõL ≈∏Y …ƒàëj ƒgh äÉæ«÷G øe Ωƒ°SƒehôμdG ∞dCÉàj

.IóMGh áæ«L πªëjh …hƒædG ¢†ª◊G A…õL øe Ò¨°U AõL Ωƒ°SƒehôμdG

?»FÉ«ª«c πYÉØJ ¤EG Ò°ûj qÒ¨J …CG 16

πFÉ°ùdG AÉŸG π qμ°ûàd ÜhòJ »àdG è∏ãdG äÉÑ©μe

∫ƒ∏fi ‘ Ö°SÎj í∏e

¥ƒë°ùe π qμ°ûàd áààØŸG áÑ∏°üdG âjÈμdG Qƒî°U

πFÉ°S …RÉZ Ühöûe π qμ°û«d Ühòj …òdG ¿ƒHôμdG ó«°ùcCG ÊÉK RÉZ

.áÑ©d IQÉ«°S ´QÉ°ùJ ôFÉ°ûH äÒZ ,øJƒ«f ÚfGƒb øY QÉÑàNG ‘ 17

?í«ë°U πμ°ûH ´QÉ°ùàdG ÉØ°üj ¿Gò∏dG ¢SÉ«≤dG IóMhh ∞jô©àdG Ée

(m/s2) á«¶ë∏dG áYöùdGh áYöùdG ¬°SÉ°SCG ≈∏Y Ò¨àJ …òdG ∫ó©ŸG

(m/s) ¬°SÉ°SCG ≈∏Y áaÉ°ùŸG Ò¨àJ …òdG ∫ó©ŸG

(m/s) ácô◊G √ÉŒG ¬°SÉ°SCG ≈∏Y Ò¨àj …òdG ∫ó©ŸG

(m2/s) áMGRE’G áMÉ°ùe ¬°SÉ°SCG ≈∏Y Ò¨àJ …òdG ∫ó©ŸG

.ÉjÓÿG ≈∏Y ´É©°TE’G ôKG Oóë«d ÈàîŸG ‘ áHôŒ ⁄ÉY qóYCG 18

Ωƒ≤j ÉeóæY áeÓ°ùdG äGAGôLEG PÉîJGh á°UÉÿG äGõ«¡éàdG ΩGóîà°SG Öéj n⁄

?áHôéàdÉH ⁄É©dG

.∫É©à°TÓd πHÉb …hƒædG ¢†ª◊G

.ôéØàe ´É©°TE’G

.…ƒb ¢†ªM …hƒædG ¢†ª◊G

.¿ÉWöùdG ÖÑ°ùj ¿CG ´É©°TEÓd øμÁ

6091-14

Grade 9 Science

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14 Which mutation would result in a change that can be inherited?

A mutation in a brain cell

A mutation in a ciliated cell

A mutation in a skin cell

A mutation in a sperm cell

15 What is the relationship of a chromosome to DNA and genes?

A chromosome is a gene and forms DNA.

A chromosome is made of DNA and is organised into many genes.

A chromosome is made out of genes and has many DNA molecules.

A chromosome is a short part of a DNA molecule and has one gene on it.

16 Which change indicates a chemical reaction?

Ice cubes melting to form liquid water

A salt precipitating out of a solution

Solid sulphur rocks being crushed to form a powder

Carbon dioxide gas dissolving in a liquid soft drink

17 In an investigation about Newton’s Laws, Bashayer changed the acceleration of a toy car.

Which definition and unit of measurement correctly describe acceleration?

The rate at which speed or velocity changes (m/s2)

The rate at which distance changes (m/s)

The rate at which direction of motion changes (m/s)

The rate at which displacement area changes (m2/s)

18 A scientist designs a laboratory experiment to determine the effect of radiation on cells.

Why should special equipment and safety procedures be used when the scientist does

this experiment?

DNA is flammable.

Radiation is explosive.

DNA is a strong acid.

Radiation can cause cancer.

6091-15


16

Aõ÷G

Gòg ‘

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J ’

.ÚØ∏àfl ÚjöûH Újhƒf Ú£‰ √ÉfOCG §£îŸG qÚÑj 19

.ÚjhƒædG Ú£ªædG øjòg ∞∏àîj ∞«c OóM (i

.Ωƒ°Sƒehôc πc øY Úàî°ùf IOÉY …hƒf §‰ πc qÚÑj GPÉŸ ìöTG (ii

1

6

13

21 22 23 24XY

14 15 16 17 18

7 8 9 10 11 12

2 3 4 51

6

13

21 22 23 24XY

14 15 16 17 18

7 8 9 10 11 12

2 3 4 5

6091-16

Grade 9 Science

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19 The diagram below shows two different human karyotypes.

i) Identify how these karyotypes differ.

ii) Explain why karyotypes usually show two copies of each chromosome.

1

6

13

21 22 23 24XY

14 15 16 17 18

7 8 9

Karyotype 1 Karyotype 2

10 11 12

2 3 4 5 1

6

13

21 22 23 24XY

14 15 16 17 18

7 8 9 10 11 12

2 3 4 5

6091-17


18

Aõ÷G

Gòg ‘

Öàμ

J ’

?‹ÉàdG πYÉØà∏d á«FÉ«ª«μdG œGƒædG »g Ée 20

ábÉW + 2H2O + CO2 2O2 + CH4

ábÉW

O2h CH4

ábÉWh H2Oh CO2

H2Oh CO2

Ò°ùJ IÒ¨°U áHôY ‘ ,¿É£∏°ùd ¿Éc .kÉeGôL ƒ∏«c 50 …hÉ°ùJ á∏àc ¿É£∏°ùd 21

.øJƒ«f 2000 â¨∏H á«aÉ°U Iƒb ,(Î°Sƒc ôdhQ) ájójóM áμ°S ≈∏Y IÒÑc áYöùH

´QÉ°ùàdG x á∏àμdG = Iƒ≤dG

?á¶ë∏dG ∂∏J ‘ ¿É£∏°S ´QÉ°ùJ ƒg Ée

100,000cm/s2 40.0cm/s2 25.0cm/s2 0.025cm/s2

∂dPh ìhô÷G ∞«Øîàd º°ù÷G ≈∏Y É¡©°Vh øμÁ IOQÉH äGOÉ qªc IQƒ°üdG qÚÑJ 22

.º°ù÷G ≈∏Y §¨°†dÉH

.AÉŸG ™e Ωƒ«fƒeC’G äGÎf §∏àîJ ,IQOÉÑdG IOÉ qªμdG π«©ØJ ºàj ÉeóæY ?IOhÈdÉH Qƒ©°ûdGh IOÉ qªμdG ójÈJ ¤EG …ODƒj »∏j É‡ qÒ¨J q…CG

.ó∏÷G ¤EG ábÉ£dG ≥∏£æJh »FÉjõ«a qÒ¨J ∑Éæg

.ó∏÷G øe ábÉ£dG ¢ünà o“h »FÉjõ«a qÒ¨J ∑Éæg

.ó∏÷G øe ábÉ£dG ¢ünà o“h »FÉª«c qÒ¨J ∑Éæg

.ó∏÷G ¤EG ábÉ£dG ≥∏£æJh »FÉª«c qÒ¨J ∑Éæg

6091-18

Grade 9 Science

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20 What are the chemical product(s) in this reaction?

CH4 + 2O2 CO2 + 2H2O + energy

Energy

CH4 and O2

CO2, H2O and energy

CO2 and H2O

21 Sultan has a mass of 50 kilograms.

On a roller coaster, Sultan experienced a net force of 2000 Newtons.

Force = mass x acceleration

What is Sultan’s acceleration at this moment?

0.025 m/s2 25.0 m/s2 40.0 m/s2 100,000 m/s2

22 The diagram shows a cold pack that can be applied to the body for relief of minor

injuries when pressed against the skin.

When a cold pack is activated, ammonium nitrate mixes with water.

Which change causes the cold pack to feel cold?

There is a physical change and energy is released to the skin.

There is a physical change and energy is absorbed from the skin.

There is a chemical change and energy is absorbed from the skin.

There is a chemical change and energy is released to the skin.

6091-19


20

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Gòg ‘

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J ’

øe iôNCG áYƒª› …CG .ºgQƒ¡X ≈∏Y AÉ°†ØdG OGhQ É¡jóJÒd ¿RƒdG áØ«ØN AGƒg äÉfGƒ£°SCG É°SÉf âæH 23

?´GÎN’G Gòg øe kÉ°†jCG íLQC’G ≈∏Y ó«Øà°ùà°S ¢UÉî°TC’G

¿hQÉ«£dG

¿ƒgõæàŸG

¿ƒcÉÑ°ùdG

AÉØWE’G ∫ÉLQ

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6091-20

Grade 9 Science

21

do

not w

rite in this space

23 NASA built lightweight air cylinders that could easily be worn on an astronaut’s back.

Which other group of people would most likely benefit from this invention?

Pilots

Hikers

Plumbers

Fire-fighters

24 Which diagram best represents the Watson and Crick DNA model?

P

P

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P

P

P

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P

P

T

T

T

C

C

A

T

A

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C

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6091-21


22

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.¢VQCÓd

?áfhRƒe ádOÉ©e »g »∏j É‡ á«FÉ«ª«c ádOÉ©e q…CG 26

2MgO O2 + Mg

MgO O2 + 2Mg

MgO 2O2 + Mg

2MgO O2 + 2Mg

?áq«fó©e Iôμd ÈcC’G ¿RƒdG ¿ƒμj øjCG 27

¢VQC’Gôª≤dG¢ùª°ûdGïj qôŸG

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6091-22

Grade 9 Science

23

do

not w

rite in this space

25 i) State one advantage of having a telecommunications satellite in geostationary orbit.

ii) State one disadvantage of having a telecommunications satellite in geostationary

orbit.

26 Which chemical equation is balanced?

Mg + O2 2MgO

2Mg + O2 MgO

Mg + 2O2 MgO

2Mg + O2 2MgO

27 Where would the weight of a metal ball be greatest?

Earth Moon Sun Mars

Gravity (m/s2) 9.8 1.6 274 3.7

Earth

Moon

Sun

Mars

28 Many millions of years after the universe began, galaxies started to form.

What is a galaxy?

A hot swirling cloud of gas and dust.

A star surrounded by planets and comets.

A small group of stars that forms a pattern in the sky.

A very large group of many millions of stars.

6091-23


24

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?¢VQC’G ∫ƒM

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48

6091-24

Grade 9 Science

25

do

not w

rite in this space

29 A scientist tests the effect of radiation on cells in a lab.

The table shows the results.

Radiation dosagePercent of cells that

divide

Low 80

Medium 60

High 40

This experiment is not a 'fair test'.

Describe how the scientist could improve this experiment.

30 How many hours does a satellite in a geostationary orbit take to complete one revolution

of the Earth?

6

12

24

48

6091-25


26

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010

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1522

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32

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6 5 4 3

1

H1.008

3

Li6.939

11

Na22.99

19

K39.102

37

Rb85.47

55

Cs132.91

87

Fr215

4

Be9.0122

12

Mg24.312

20

Ca40.08

38

Sr87.62

56

Ba137.34

88

Ra226.03

21

Sc44.956

39

Y88.905

57*

La138.91

89**

Ac227.03

22

Ti47.940

Zr91.22

72

Hf178.49

104

Rt[261]

23

V50.942

41

Nb92.906

73

Ta180.95

105

Db[262]

24

Cr51.996

42

Mo95.94

74

W183.85

106

Sg[266]

25

Mn54.938

43

Tc[97]75

Re186.2107

Bh[264]

26

Fe55.847

44

Ru101.07

76

Os190.2108

Hs[269]

27

Co58.933

45

Rh102.91

77

Ir192.2109

Mt[268]

28

Ni58.71

46

Pd106.4

78

Pt195.09

110

[271]

29

Cu63.546

47

Ag107.87

79

Au196.97

111

[272]

30

Zn65.37

48

Cd112.4

80

Hg200.59

5

13

31

49

81

68

100

6

14

32

50

82

114

69

101

7

15

33

51

83

70

102

8

16

34

52

84

116

71

103

9

17

35

53

85

2

10

18

36

54

86

B

Al

Ga

In

Tl

Er

Fm

C

Si

Ge

Sn

Pb

Tm

Md

N

P

As

Sb

Bi

Yb

No

O

S

Se

Te

Po

Lu

Lr

F

Cl

Br

I

At

He

Ne

Ar

Kr

Xe

Rn

10.811

26.982

69.72

114.82

204.37

167.26

257.1

164.93

252.08

162.5

252.08

158.92

249.08

157.25

244.06

151.96

241.06

150.35

239.05

145

237.05

144.24

238.03

140.91

231

12.011

28.086

72.59

118.69

207.19

[289]

168.93

258.1

14.007

30.974

74.922

121.75

208.98

173.04

259.1

15.999

32.064

78.96

127.6

210

[289]

174.97

262.11

18.98

35.453

79.904

126.

210

4.003

20.183

39.948

83.8

131.3

222112

[277]

58

90

59

91

60

92

61

93

62

94

63

95

64

96

65

97

66

98

67

99

Ce

Th

Pr

Pa

Nd

U

Pm

Np

Sm

Pu

Eu

Am

Gd

Cm

Tb

Bk

Dy

Cf

Ho

Es

140.12

232.04

*Lathanides

**Actinides

1A

2A

3B 4B 5B 6B 7B 1B 2B

3A 4A 5A 6A 7A

8APERIODIC TABLE OF THE ELEMENTS

8B

6091-26

Grade 9 Science

27

do

not w

rite in this space

31 The movement of an object is recorded in a table.

Time (s) Distance (m)

0 10

5 16

10 20

15 22

What is happening to the motion of this object?

The speed is decreasing.

The speed is increasing.

It is changing direction.

It is at rest.

32

How many valence electrons does a neutral atom of Silicon (Si) have?

3 4 5 6

1

H1.008

3

Li6.939

11

Na22.99

19

K39.102

37

Rb85.47

55

Cs132.91

87

Fr215

4

Be9.0122

12

Mg24.312

20

Ca40.08

38

Sr87.62

56

Ba137.34

88

Ra226.03

21

Sc44.956

39

Y88.905

57*

La138.91

89**

Ac227.03

22

Ti47.940

Zr91.22

72

Hf178.49

104

Rt[261]

23

V50.942

41

Nb92.906

73

Ta180.95

105

Db[262]

24

Cr51.996

42

Mo95.94

74

W183.85

106

Sg[266]

25

Mn54.938

43

Tc[97]75

Re186.2107

Bh[264]

26

Fe55.847

44

Ru101.07

76

Os190.2108

Hs[269]

27

Co58.933

45

Rh102.91

77

Ir192.2109

Mt[268]

28

Ni58.71

46

Pd106.4

78

Pt195.09

110

[271]

29

Cu63.546

47

Ag107.87

79

Au196.97

111

[272]

30

Zn65.37

48

Cd112.4

80

Hg200.59

5

13

31

49

81

68

100

6

14

32

50

82

114

69

101

7

15

33

51

83

70

102

8

16

34

52

84

116

71

103

9

17

35

53

85

2

10

18

36

54

86

B

Al

Ga

In

Tl

Er

Fm

C

Si

Ge

Sn

Pb

Tm

Md

N

P

As

Sb

Bi

Yb

No

O

S

Se

Te

Po

Lu

Lr

F

Cl

Br

I

At

He

Ne

Ar

Kr

Xe

Rn

10.811

26.982

69.72

114.82

204.37

167.26

257.1

164.93

252.08

162.5

252.08

158.92

249.08

157.25

244.06

151.96

241.06

150.35

239.05

145

237.05

144.24

238.03

140.91

231

12.011

28.086

72.59

118.69

207.19

[289]

168.93

258.1

14.007

30.974

74.922

121.75

208.98

173.04

259.1

15.999

32.064

78.96

127.6

210

[289]

174.97

262.11

18.98

35.453

79.904

126.

210

4.003

20.183

39.948

83.8

131.3

222112

[277]

58

90

59

91

60

92

61

93

62

94

63

95

64

96

65

97

66

98

67

99

Ce

Th

Pr

Pa

Nd

U

Pm

Np

Sm

Pu

Eu

Am

Gd

Cm

Tb

Bk

Dy

Cf

Ho

Es

140.12

232.04

*Lathanides

**Actinides

1A

2A

3B 4B 5B 6B 7B 1B 2B

3A 4A 5A 6A 7A

8APERIODIC TABLE OF THE ELEMENTS

8B

6091-27


28

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.øjhGôªM Úæ«©H ÉHÉHP §≤a èæàj ¿CG øjhGôª◊G Úæ«©dG …P ÜÉHò∏d øμÁ

6091-28

Grade 9 Science

29

do

not w

rite in this space

33 Outline two observations you would expect to see in a chemical reaction.

34 Why were stars and galaxies not present in the first billion years of the universe?

There were not enough elements to form stars.

There was too much antimatter for stars to form.

The universe was too small to contain stars and galaxies.

The universe was too hot for matter to condense into stars.

35 Fruit flies can have brown or red eyes.

What does it mean for brown eyes to be recessive and red eyes to be dominant?

Brown-eyed flies are less likely to reproduce.

Two red-eyed flies can produce brown-eyed flies.

There are more flies with red eyes than brown eyes.

Red-eyed flies only produce red-eyed flies.

6091-29


30

Aõ÷G

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J ’

.áHôY ™jöùàd áHƒ∏£ŸG Iƒ≤dG ò«eÓJ ¢SÉb 36

.øJƒ«f 5 ≠∏ÑJ áàHÉK Iƒ≤H áHô©dG Öë°S ”

π«ãªàdG ≈∏Y èFÉàædG π«é°ùJ ”h m¿GƒK 10 IÎa ≈∏Y á«¶ë∏dG áHô©dG áYöS ¢SÉ«b ”

.‹ÉàdG ÊÉ«ÑdG

´QÉ°ùàdG x á∏àμdG = Iƒ≤dG

. m¿GƒK 10 IÎa ∫ÓN áHô©dG ´QÉ°ùJ Ö°ùMG (i

.áHô©dG á∏àc Ö°ùMG (ii

?NO3- äÉfƒjCGh Mg2+ äÉfƒjCG á£°SGƒH π qμ°ûàj …òdG Ö qcôª∏d á«FÉ«ª«μdG á¨«°üdG »g Ée 37

MgNO3

Mg(NO3)2

Mg2NO3

Mg2(NO3)2

02

35

30

25

20

15

10

5

4 6 8 10

6091-30

Grade 9 Science

31

do

not w

rite in this space

36 Students measured the force required to accelerate a cart.

The cart was pulled with a constant force of 5 Newtons.

The velocity of the cart was measured over a 10-second period and the results were

graphed as shown.

Force = mass x acceleration

i) Calculate the acceleration of the cart over the 10-second period.

ii) Calculate the mass of the cart.

37 What is the chemical formula of the compound formed by Mg2+ ions and NO3- ions?

MgNO3

Mg(NO3)2

Mg2NO3

Mg2(NO3)2

02

35

30

25

20

15

10

5

4 6

Time (seconds)

Constant Acceleration

Velo

city

(met

res/

seco

nd)

8 10

6091-31

6091-32

-00

001

external measurement Ωƒ∏y of student …...grade ∞`` üdg science 9 Ωƒ∏y test instructions...

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