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Science

Grade

TEST INSTRUCTIONS

Pleasemakesurethatyouhaveaseparateanswersheetwiththistestpaper.

Pleasecheckthattheanswersheethasyourdetailsprintedonit.Ifnot,printyournameanddateofbirthonyouranswersheetintheareaprovided.

Pleasecheckthatthesubjectandgradenumberonyouranswersheetmatchesthisquestionpaper.

Thistesthas40 QUESTIONS.Eachquestionhasfourpossibleanswers.Onlyoneiscorrect.

Pleaseuseapencilonlytoshadeintheanswerbubbleofyourchoiceonyouranswersheet.

ChoosethecorrectanswerfromA,B,CorDandshadethisbubbleinonyourSCIENCE ANSWER SHEET.

Ifyoumakeamistakethenruboutyouranswercompletelyandshadeinthebubbleofyournewanswer.

AllanswersmustbemarkedonyourANSWER SHEET.Youareallowed1 hour and 15 minutesforthistest.

May 2010

External Measurement of Student Achievement

Grade 7 Science

2

1 Whichtablegivesthechemicalsymbolfortheseelements?

2 Whatistheroleofthecellmembrane?

A Itcontrolsalltheactivitiesofthecell.

B Itiswheremanychemicalreactionstakeplace.

C Itregulatesmovementofsubstancesinandoutofthecell.

D Itiswherenutrientsarestoredwhichgiveenergytothecell.

3Howdotheinnerplanetsdifferfromtheouterplanets?

Inner planets Outer planets

A small,mainlymadeofgas large,rocky

B mainlyrocky,revolveonaxis mainlymadeofgas,donotrevolve

C shorterorbit,mainlymadeofgas longerorbit,rocky

D small,mainlyrocky large,mainlymadeofgas

Element SymbolHydrogen HSodium SChlorine C

Element SymbolHydrogen HSodium NaChlorine Cl

Element SymbolHydrogen Hy

Sodium SoChlorine Ch

Element SymbolHydrogen H

Sodium NChlorine C

A

C

B

D

Sun

Mercury


Earth

Jupiter

Venus Mars SaturnNeptune

Uranus

Animal cell:

cytoplasm

nucleus

cell membrane

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Grade 7 Science

3

4 Howdoesgravityaffecttheoceans?

A Itmakesthewaves.

B ItcreatesTsunamis.

C Itmakesthemblue.

D Itcreatesthetides.

5 Peopleneedtoeatcertainvitaminstostayhealthy.Microbescanmakeallthevitaminstheyrequire.Somemicrobesliveinsidepeople'sguts,donotcausediseasebutdoreleaseexcessvitamins.Whichstatementdescribestheroleofthesemicrobes?

A Allmicrobeslivinginsidepeopleandontheirskinareharmful.

B Peoplecanimprovetheirdietbyeatingmoremicrobestogetvitamins.

C Somemicrobescancausediseasebyreleasingtoomanyvitamins.

D Microbesliveinpeople’sgutsandarehelpfulbecausetheyproduceusefulvitamins.

6 Whatwillhappeninthisexperiment?

A Steamevaporateswhentheicecubesareheated.

B Thesolidicewillbecomeliquidwhenheated.

C ApplyingheatwillconvertH2Otogasorsteam.

D Steamwillbereleasedastheiceturnstoliquid.

7 Whichoftheserocksismostprobablyformedfromerodedsediment?

A bothRockIandRockII

B neitherRockInorRockII

C onlyRockI

D onlyRockII

ice cubes

watchglass

gauze mat

tripod

SOURCEOF HEAT

10 mm 10 mmI II

Grade 7 Science

4

8 Theglidershownheretakesofffromaclifftopnearabeach.Whatistheglidertakingadvantageof?

A radiatedheat,whichpromotesflight

B convectioncurrentswhichcausewarmairtorise

C windsblowingfromcoldairuphightowarmairnearthebeach

D stillairinfrontoftheclifffacewhichallowssmoothflight

9 Agroupofstudentswasdiscussingdensity.Theteacheraskedthestudentsthesetwoquestions: "Howmuchspacewould1kilogramofgoldtakeup?" "Howmuchspacewould1kilogramoffeatherstakeup?"Hereishowfourstudentsresponded.Whoiscorrect?

A Ali

B Bilal

C Mahmoud

D Mustafa

Ali

Bilal

Mahmoud

Mustafa

1 kg of gold isabout the size of a mobile phone.1 kg of feathers is about the size

of a large pillow.

1 kilogram of gold wouldbe about the size of a large suitcase.

1 kilogram of feathers is about the size of a refrigerator.

Both the gold and thefeathers would take up thesame amount of space.

1 kg of featherswould take up slightly more

space than 1 kg of gold.


4

8

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5

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Grade 7 Science

5

10 Whenanelectriccurrentpassesthroughmetal,itcausesamagneticfield.Thisiscalledelectromagnetism.Whichexplanationshowshowanelectromagneticcraneworks?

A Electricityallowsthecranetopickupveryheavyobjectsnotmadeofmetal.

B Electricityisswitchedontopickupheavymetalobjectsandswitchedofftodropthem.

C Whenelectricityispassedthroughamagnet,itrepelsmetalobjects,makingthemmove.

D Electromagnetscancrushmetals,helpingtomakemoreroominascrapmetalyard.

11 Desertsareharshenvironmentsforanimalstosurvivein.Whichadaptationofthecamelbesthelpsittosurviveinthisenvironment?

A Camelsgivebirthtomanylivebabies.

B Camelshaveheavybonyskeletons.

C Camelscanstorenutrientsintheirhumps.

D Camelscanrunatmoderatelyhighspeeds.

12 WhichdiagramshowsthemovementoftheEarthandtheMoonaroundtheSun?

Sun

Moon

Sun

Moon

Sun

EarthEarthEarthEarth Moon

Sun

Moon

A B C D

Sun

Moon

Sun

Moon

Sun


Sun

Moon

A B C D

Sun

Moon

Sun

Moon

Sun


Sun

Moon

A B C D

Sun

Moon

Sun

Moon

Sun


Sun

Moon

A B C D

Sun

Moon

Sun

Moon

Sun


Sun

Moon

A B C D

Grade 7 Science

6

13 Sanddoesnotdissolveinwater.Coppersulphatedissolveseasilyinwater.Whichstatementdescribestheseparationofsandanddissolvedcoppersulphate?

A Anewsubstancehasbeenformedsothesubstancescannotbeseparated.

B Sandcanberemovedbyfilteringthewaterthenthecoppersulphatecanberemovedbyevaporatingthewater.

C Thesandcanberemovedsinceitisinsoluble,butthecoppersulphatecannotberemovedfromthewater.

D Boththesandandthecoppersulphatecanberemovedbyusingfilterpaper.

14WhichexplanationdescribeswhydaylengthdiffersindifferentplacesonEarth?

A theamounttheEarthistilted

B thedistancefromtheEarthtotheSun

C theratetheEarthspinsonitsaxis

D theshadowoftheMoon

15 Whichdiagramshowsthemagneticfieldaroundamagnet?

Equator

Sri LankaSimilar length of day all year

AntarcticaVery long summer days Very short winter days

UAESummer days are slightlylonger than winter days

N

S

N

S

N

S

N

S

A B C D


6

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14

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S

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A B C D

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7

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Grade 7 Science

7

16Theshaleandsandstonelayersinthediagramwerebrokenandseparatedbymovementalongthefault.Whatelsemostlikelyoccurredatthetimetheserocklayersmovedalongthefault?

A deepcaveswereformed

B volcanoeserupted

C therewasearthquakeactivity

D theareawasfloodedwithwater

17 Thefollowingflowchartdescribesonemethodofremovingonesubstancefromanother.WhatdoPandQrepresent?

P Q

A Insolublesolids Solublesolids

B Solublesolids Insolublesolids

C Solute Solvent

D Solvent Solute

fault

sandstone

sandstone

shale

Mixture

Evaporatewater

Q

P

Add water

Filter

Grade 7 Science

8

18Whatisthemagnifyingpowerofthismicroscope?

A 32

B 310

C 312

D 320

19 Nervecellsareimportantforourbodies'functioningbecausetheyrelayinformationquicklyoverlongdistancesinthebody,tothebrain.Whichparts(features)ofthisnervearespecificallydesignedforthispurpose?

A bothIandIV

B bothIIandIII

C bothIandIII

D bothIIandIV

20 Thesetwoimagesshowpartoftherockcycle.Whatotherelementisrequiredtopromotethisprocess?

A thepresenceofmineralsinsurroundingrocks

B entryofwaterintothecrack

C verybriefbutstrongwinds

D theinterventionofpeople

I

II

III

IVNerve Cell

0ºC

crackexpands


8

18

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q≥ q°ûdG ¤EG AÉŸG ∫ƒNO Ü

áqjƒb øμdh I qóŸG Iõ«Lh ìÉjQ ê

¿É°ùfE’G π tNóJ O


9

ÉjÓÿG IO uó©àe äÉæFÉc öûÑdG .É«ëàd É¡«dEG êÉà– »àqdG äÉÑ«c qÎdG ™«ªL ≈∏Y Éæ«∏Lƒ«dG πãe áq«∏ÿG Ió«MƒdG äÉæFÉμdG …ƒà– 21

.Ék©e π nª©J ¿CG Ö péjh á°ü u°üîàe ºgÉjÓNh

?É¡H qπëj GPÉe ,¢üî°T ¿É°ùd øe IóMGh áq«∏N ádGREG ∫ÉM ‘

.É¡àdGREG ó« n©oH äƒ“ CG

. kÓ p°üØæe Év«M ÉkæFÉc É¡fƒc ¢û«©dG ‘ qôªà°ùJ Ü

.IÉ«◊G ó«b ≈∏Y AÉ≤ÑdG πLCG øe IóMGh áq«∏N øe ÌcCG ¤EG º p°ù≤æJ ê

.áqjƒ∏ÿG É¡àÑ«côJ âØs«c ¿EG π p°üØæe q»M øFÉμc ¢û«©J O

22

?π°†aC’G »g áHÉLEG q…CG

.áë«ë q°üdG qOGƒŸG §n∏îoJ ÉeóæY §≤a q»FÉ«ª«c πYÉØJ ≈∏Y π o°ü– CG

.äÓYÉØàŸG ô seóoJ ÉeóæY q»FÉ«ª«c πYÉØJ ≈∏Y π o°ü– Ü

.AÉHô r¡ nch äƒ°U èpàænj ÉeóæY q»FÉ«ª«c πYÉØJ ≈∏Y π o°ü– ê

.¿ƒq∏dG ‘ qÒ¨J π n°üM hCG RÉZ å n©ÑfG GPEG q»FÉ«ª«c πYÉØJ ∂jód ¿ƒμj ób O

Grade 7 Science

9

21 Single-celledorganismssuchasEuglenacontainallthestructurestheyneedtoexist.Humansaremulti-cellularorganismswhosecellsarespecialisedandmustworktogether.

Asinglehumantonguecellwasremovedfromaperson'smouth.Whatwouldhavehappenedtothecell?

A Itwouldhavediedsoonafterbeingremoved.

B Itwouldhavecontinuedtoliveasaseparateorganism.

C Itwouldhavedividedintomorethanonecellinordertosurvive.

D Itcouldhavelivedasaseparateorganismifitadapteditscellularstructure.

22Whichanswerisbest?

A Yougetachemicalreactiononlywhenyoumixthecorrectsubstances.

B Youhaveachemicalreactionwhenthereactantsaredestroyed.

C Youhaveachemicalreactionwhensoundandelectricityaremade.

D Youmighthaveachemicalreactionifagasisreleasedorthereisacolourchange.

How can we tell if there’s been

a chemical reaction?

Grade 7 Science

10

23Ifyouwantedbothbulbstoshineatthesamebrightness,whichcircuitwouldbebetter?

A Ibecausethereislessconnectingwire.

B Ibecausethecurrentisthesamearoundthecircuit.

C IIbecausethesamecurrentflowsthroughbothglobes.

D IIbecausethewireisusedmoreeffectively.

24 Everyyearmillionsofmarineanimalsarekilledasaresultofbeingcaughtinlitterwhichendsupinwaterways.Whichstrategywouldnothelptostopthisproblem?

A encouragepeopletouseplasticbagswhichbreakdownintheenvironment

B encouragepeopletousebagswhichcanbere-usedmanytimes

C usenetstopreventmarineanimalsswimmingnearwherepeoplelive

D placegratesoverdrainsthatleadintonaturalwaterwaystotraprubbish

25 Anelectricalcircuitcanbeverydangerous.Ashortcircuitallowselectricitytoflowfreelythroughanareaofleastelectricalresistance.Howdofuseshelptoreducethechanceofinjuryfromashortcircuit?

A Thefuseabsorbsspareelectricity.

B Thefusemeltsandbreakswhentoomuchcurrentflows,stoppingthecurrent.

C Thefuseismadeofasubstancewhichdoesnottransmitelectriccurrent.

D Thefuseconvertselectricityintonon-harmfulenergywaves.

Circuit I Circuit II

power source

bulb


10

23

?π°†aC’G »g áq«FÉHô r¡ nc IQGO q…CG ,É¡°ùØf ´ƒ£ q°ùdG I qó°T Éª¡«∏c ÚMÉÑ°üª∏d ¿ƒμj ¿CG nä rOQCG ¿EG

.á∏ u°UƒŸG ∑Ó°SC’G øe qπbCG OóY OƒLƒd ,I IQG qódG CG

.IQG qódG ‘ É¡°ùØf »g QÉq«qàdG I qó°T q¿C’ ,I IQG qódG Ü

.ÚMÉÑ°üŸG Óc ÈY ÜÉ°ùæj ¬°ùØf QÉq«qàdG q¿C’ ,II IQG qódG ê

.ÈcCG áq«dÉ q©ØH Ω nóîà°ùe ∂∏ q°ùdG q¿C’ ,II IQG qódG O

.√É«ŸG …QÉ› ‘ »¡àæJ »àqdG äÉjÉØtædÉH ≥n∏©J ÉeóæY áqjôëÑdG äÉfGƒ«◊G ÚjÓe äƒ“ ,áæ°S qπc ‘ 24

?á∏μ°ûŸG √òg øe qó◊G ≈∏Y ó pYÉ°ùoJ ’ äÉq«é«JGÎ°SE’G øe q…CG

á©«Ñ q£dG ‘ πs∏ëàJ »àqdG áq«μ«à°SÓÑdG ¢SÉ«cC’G ΩGóîà°SG ≈∏Y ¢SÉqædG ™«é°ûJ CG

IójóY äG qôe É¡dÉª©à°SG IOÉYEG ø pμ oÁ ¢SÉ«cCG ΩGóîà°SG ≈∏Y ¢SÉqædG ™«é°ûJ Ü

áq«æμ q°ùdG ≥WÉæŸG øe Üô≤dÉH áMÉÑ q°ùdG øe áqjôëÑdG äÉfGƒ«◊G ™æŸ äÉμÑ°T ΩGóîà°S pG ê

É¡H ≥∏©àd ∂dPh ,áq«©«Ñ q£dG √É«ŸG …QÉ› ¤EG … qODƒoJ »àqdG ±QÉ°üŸG ¥ƒa áqjójóM ¿ÉÑ°†b äÉμÑ°T ™ r°V nh O

äÉjÉØtædG

. qπbCG áq«FÉHô r¡ nc áehÉ≤e äGP á≤£æe ÈY áqj qôëH QÉq«qàdG QhôÃ IÒ°ü≤dG IQG qódG í nª°ùJ .G vóL Iô£N áq«FÉHô r¡ nμdG IQG qódG ¿ƒμJ ób 25

?IÒ°ü≤dG IQG qódG øY áŒÉqædG áHÉ°UE’G ô£N ∫ÉªàMG øe π«∏≤qàdG ≈∏Y ôgÉ°üŸG ó pYÉ°ùoJ ∞«c

.AÉHô r¡ nμdG øe ¢†FÉØdG ô¡°üpŸG q¢üàÁ CG

.QÉq«qàdG ∂dòH ™ n£≤«a ,G vóL ójó°T q»FÉHô r¡ nc QÉq«J Qhôe óæY pöùμæjh ô¡°üpŸG ô p¡°üæj Ü

. q»FÉHô r¡ nμdG QÉq«qàdG π o≤æJ ’ I qOÉe øe ´ƒæ°üe ô¡°üpŸG ê

.I qQÉ°V ÒZ ábÉW äÉLƒe ¤EG AÉHô r¡ nμdG ô¡°üpŸG ∫ uƒëoj O


11

26

?πFÉ°S íLQC’G ≈∏Y »g IOÉe q…CG

âHÉK §‰ ‘ áHQÉ≤àe É¡JÉª«°ùL q¿C’ I CG

É k°†©H É¡°†©H ∫ƒM ∑ sôëàJ É¡qæμdh ,áHQÉ≤àe É¡JÉª«°ùL q¿C’ I Ü

áYöùH ∑ sôëàJh IóYÉÑàe äÉª«°ù÷G q¿C’ II ê

âHÉK §‰ ‘ ∑ sôëàJ É¡qfCÉch hóÑJ äÉª«°ù÷G q¿C’ II O

?∫ƒWC’G áaÉ°ùŸG ™ n£≤«°S øne 27

äÉYÉ°S 4 I qóŸ 1 m/s áYöùH »°û“ »àqdG πeCG CG

áYÉ°S I qóŸ 2 m/s áYöùH ¢† ocôj …òqdG ódÉN Ü

áYÉ°S ½ IóŸ 4 m/s áYöùH ¬JQÉq«°S Oƒ≤j …òqdG Oƒªfi ê

áYÉ°S ¼ IóŸ 8m/s áYöùH É¡àLG qQO Oƒ≤J »àqdG øjÒ°T O

.I º°S qôdG ô o¶foG .Oƒ«dG øe õ scôe ∫ƒ∏fi ‘ áq«∏N â© p°V oh 28

.II º°S qôdG ô o¶foG .áq«∏ÿG πNGO Oƒ«dG äÉÄjõL OóY OGR ,Ò°üb âbh ó©H

?á¶MÓŸG √ò¡d π°†aC’G Ò°ùØqàdG Ée

.áq«∏ÿG AÉ°ûZ ÈY ¢† pØîæe õ«côJ á≤£æe ¤EG m∫ÉY õ«côJ á≤£æe øe Oƒ«dG äÉÄjõL π p≤àæJ CG

.√ÈY Oƒ«dG äÉÄjõL øe §≤a π«∏b OóY QhôÃ áq«∏ÿG AÉ°ûZ í nª°ùj Ü

.É¡æe iôNCG AGõLCGh áq«∏ÿG IGƒf ƒëf Oƒ«dG Ü pòéæj ê

.áq«∏ÿG πNGO Oƒ«dG äÉÄjõL áq«∏ÿG IGƒf ™næ°üJ O

Grade 7 Science

11

26Whichsubstanceisprobablyaliquid?

A Ibecauseitsparticlesareclosetogetherinafixedpattern

B Ibecauseitsparticlesareclosetogetherbutmovingaroundeachother

C IIbecausetheparticlesarefarapartandmovingrapidly

D IIbecausetheparticlesappeartobemovinginafixedpattern

27 Whowouldcoverthegreatestdistance?

A Amal,walkingat1m/sfor4hours.

B Khaliq,runningat2m/sforanhour.

C Mahmoud,drivingacarat4m/sfor½anhour.

D Sherrine,ridingabikeat8m/sfor¼ofanhour.

28 Acellwasplacedintoaconcentratedsolutionofiodine.SeediagramIAshorttimelater,thecellhasmoreiodinemoleculesinside.SeediagramII.Whatbestexplainsthisobservation?

A Iodinemoleculesmovefromhightolowconcentrationsthroughcellmembranes.

B Cellmembranesonlyletsmallnumbersofiodinemoleculestopassthrough.

C Iodineisattractedtothenucleusandotherpartsofthecell.

D Iodinemoleculesarebeingcreatedinsidethecellbythenucleus.

cell nucleus

cell cell membrane

solution

cell nucleus

cell

= iodine molecule

III

solution

cell membrane

cell nucleus

cell cell membrane

solution

cell nucleus

cell

= iodine molecule

III

solution

cell membrane

Grade 7 Science

12

29 Whichdiagramshowstheprocessofboiling?

30 Abdulthinksthattimeandtemperatureaffectthesizeofcrystalsformed.Hethinksslowcoolingofasolutioncreateslargecrystals.Hesetupanexperimenttotestthishypothesis.Ifthehypothesisiscorrectwherewouldthelargestcrystalsform?

A TesttubeI

B TesttubeII

C TesttubeIII

D TesttubesIandIII

solid particlesvibrate

heat heat

liquidformed

heat heat


heat heat

liquidformed

heat heat


heat heat

liquidformed

heat heat


heat heat

liquidformed

heat heat


heat heat

liquidformed

heat heat


heat heat

liquidformed

heat heat


heat heat

liquidformed

heat heat


heat heat

liquidformed

heat heat

A B

C D


12

?¿É«∏¨dG áq«∏ªY ô p¡¶oj º r°S nQ q…CG 29

π uμ°ûoj Ée ∫ƒ∏ëŸ A»£ÑdG ójÈqàdG q¿CG ó p≤à©jh ,π sμ°ûàJ »àqdG äGQƒq∏ÑdG ºéM ‘ ¿GôuKDƒoj IQGô◊G áLQOh âbƒdG q¿CG ∫OÉY ó p≤à©j 30

.IÒÑc äGQƒq∏H

.áq«°VôØdG √òg QÉÑàN’ áHôŒ iôLCG

?É kªéM ÈcC’G äGQƒq∏ÑdG π sμ°ûàJ ¿CG ø pμ oÁ øjCG ,áë«ë°U áq«°VôØdG √òg âfÉc ¿EG

I QÉÑàNG ÜƒÑfCG CG

II QÉÑàNG ÜƒÑfCG Ü

III QÉÑàNG ÜƒÑfCG ê

IIIh I QÉÑàN’G ÉHƒÑfCG O


13

31

.§≤a áæ q°ùdG ‘ IóMGh I qôe ¬cGƒØdG º¶©e »ræ nL qºàj

q¿CG »æ©j Gòg .áæ q°ùdG á∏«W iÈμdG ¿RÉîŸG ‘ ôsaƒàj ¬qæμd ,AÉà q°ûdG ‘ IOhôH ÌcC’G ≥WÉæŸG ‘ ìÉqØqàdG ∞ n£≤oj ,∫ÉãŸG π«Ñ°S ≈∏Y

.á∏jƒW äGÎØd IOsÈe äÉY nOƒà°ùe ‘ ¿ sõîojh OQÉÑdG ñÉæŸG äGP ≥WÉæŸG øe O nQƒà°ùoj ìÉqØqàdG

?ôeC’G Gòg øY èpàænj ób q»Ñ∏°S ÒKCÉJ q…CG

áæ q°ùdG øe äGÎØdG ¢†©H ‘ á¡cÉØdG øe ÒãμdG ¢SÉqædG π ocCÉj CG

á¡cÉØdG øe ójõŸG ∫hÉæJ óæY π°†aCG q»FGòZ ΩÉ¶f ≈∏Y ¢SÉqædG π o°üëj Ü

áq«aÉ°VEG ábÉW Ös∏£àj ¬æjõîJ hCG ìÉ qØqàdG π r≤nf ê

áq«FGò¨dG OGƒŸG øe √ÒZ ¤EG áÑ°ùf É kLGh nQ qπbCG ìÉ qØqàdG í pÑ°üoj O

.Év«Fƒ°V G kô¡ p› áe póîà°ùe ÉjÓÿG øe ÚàëjöT ¤EG ≈æe äô n¶f 32

?≈æe ¬rà n¶ nM’ Ée ∞ p°üJ á∏ªL q…CG

.í°VGh q…ƒ∏N QGóL ájDhQ π o¡°ùj ¬qfC’ áq«JÉÑf áq«∏N I áëj qöûdG ô p¡¶oJ CG

.áqjôFGO ÌcCG áq«∏ÿG πμ°T q¿C’ áq«JÉÑf áq«∏N I áëj qöûdG ô p¡¶oJ Ü

.IójóY IÒ¨°U i kƒf É¡d q¿C’ áq«JÉÑf áq«∏N II áëj qöûdG ô p¡¶oJ ê

.É¡«a IÒÑc Iƒéa ájDhQ ø pμ oÁ ¬qfC’ áq«JÉÑf áq«∏N II áëj qöûdG ô p¡¶oJ O

Grade 7 Science

13

31 Mostfruitsareonlyharvestedatonetimeoftheyear.Forexample,applesareharvestedincolderareasinwinter,butareavailableinsupermarketsallyear.Thismeansthatapplesareimportedfromcoldclimatesandstoredinchilledwarehousesforlongperiodsoftime.WhatNEGATIVEimpactmightthishave?

A peopleeattoomuchfruitatsometimesoftheyear

B peoplegetabetterdietbyeatingmorefruit

C extraenergyisrequiredtotransportorstoretheapples

D applesbecomelesspopularrelativetootherfoods

32 Monalookedattwoslidesofcellsusingalightmicroscope.WhichstatementdescribeswhatMonaobserved?

A SlideIshowsaplantcellbecauseitiseasytoseeaclearcellwall.

B SlideIshowsaplantcellbecausetheshapeofthecellismorerounded.

C SlideIIshowsaplantcellbecausethecellhasseveralsmallnuclei.

D SlideIIshowsaplantcellbecausealargevacuolecanbeseen.

nucleus

cytoplasm cell membrane

I

nucleusvacuole

cytoplasm cell wall

chloroplasts

cell membrane

II

Grade 7 Science

14

33 Thefollowingdiagramshowshowanigneousrockformsovertime.Themineralsthatturnintorockatthehighesttemperatureformdistinctcrystalsfirst.Whichanswershowstheorderthecrystalsformastherockcools?

34 SizeofotherbodiesinourSolarsystemrelativetotheEarth:Usethisinformationtocomparetheotherplanetsinoursolarsystem,relativetothesizeofEarth.

A Venusissimilarinsize,whileMarsismuchlarger

B Marsissmallerinsize,whileUranusislarger

C bothMercuryandMarsarelargerinsize

D bothUranusandNeptunearesmallerinsize

A

B

C

D

A

B

C

D

A

B

C

D

A

B

C

D

A

B

C

D

A

C

B

D

1000ºC 800ºC 600ºC

Object

SunMercuryVenusEarthMarsJupiterSaturnUranusNeptunePluto (at maximum orbit)2003 UB313

Relative diameter

1090.33

11

0.511944

0.250.25


14

.âbƒdG Qhôe ™e q…QÉf ôî°U π tμ°ûJ áq«Ø«c ‹ÉqàdG º°S qôdG í u°Vƒoj 33

.áë°VGh äGQƒq∏H k’ qhCG π uμ°ûoJ IQGôM áLQO ≈∏YCG óæY Qƒî°U ¤EG ∫ sƒëàJ »àqdG ¿OÉ©ŸG

?ôî q°üdG OoÈj Éª«a äGQƒq∏ÑdG π tμ°ûàd í«ë q°üdG Ö«J qÎdG ô p¡¶oJ áHÉLEG q…CG

:¢VQC’G ¤EG áÑ°ùf q»°ùª q°ûdG ÉæeÉ¶f ‘ iôNCG ΩÉ°ùLCG ΩÉéMCG 34

ÖcƒμdGq»Ñ°ùædG ô£≤dG

¢ùª q°ûdG109OQÉ£ oY0.33Iôg tõdG1

¢VQC’G1

ïj qôŸG0.5…Î°ûŸG11

π nM oR9¢SƒfGQhCG4

¿ƒàÑf4(¬d QGóe ∫ƒWCG ‘) ƒJƒ∏H0.25

UB313 20030.25.ºé◊G å«M øe , q»°ùª q°ûdG ÉæeÉ¶f ‘ iôNC’G ÖcGƒμdGh ¢VQC’G ÚH ¿ pQÉ≤oàd äÉeƒ∏©ŸG √òg Ω póîà°SpG

.ÒãμH ÈcCG ïj qôŸG q¿CG ÚM ‘ ,ºé◊G ‘ ¢VQC’G ™e Iôg tõdG ihÉ°ùàj CG

.ÈcCG ¢SƒfGQhCG q¿CG ÚM ‘ ,É kªéM ô¨°UCG ïj qôŸG Ü

.É kªéM ÈcCG ÉªgÓc ïj qôŸGh OQÉ£ oY ê

.É kªéM ô¨°UCG ÉªgÓc ¿ƒàÑfh ¢SƒfGQhCG O


15

.á∏MqôdG AÉ¡àfG ó©Hh »HO ¤EG »ÑX ƒHCG øe á∏MôH É¡eÉ«b πÑb É¡JQÉq«°S äGQÉWEG ‘ AGƒ¡dG §¨°V øe AÉæ°S â≤s≤– 35

200 kPa »ÑX ƒHCG

240 kPa »HO

?§¨ q°†dG sÒ¨J GPÉŸ

.§¨ q°†dG OGORpG ,AGƒ¡dG OGORG Éªq∏c .äGQÉWE’G QGóL ÈY AGƒ¡dG π nNO CG

.ô¨°UCG áMÉ°ùe ‘ É¡°ùØf AGƒ¡dG áq« qªc OƒLh »æ©j Éq‡ ,äGQÉWE’G ºéM ¢üs∏≤J Ü

.§¨ q°†dG OGORÉa ø oî°ùj É¡∏NGO AGƒ¡dG π n©L ≥jô q£dGh äGQÉWE’G ÚH ∑ÉμàM’G ê

.AGƒ¡dG §¨°V OGORGh AGƒ¡dG ºéM OGORG ‹ÉqàdÉHh ,ø oî°ùj ƒgh QÉWE’G O só“ O

?∂dòd q»ª∏©dG Ò°ùØqàdG Ée .Ò°S çOÉM ôKEG äÉHÉ°UEG ´ƒbh …OÉØnàd ¿ÉeC’G ΩGõM ™°Vh É kªFGO qº¡ŸG øe ,IQÉq« q°ùdÉH πq≤æqàdG óæY 36

.∂rà nØ nbhCGh I qƒb ∂rà n°VnÎYG GPEG q’EG áq«°SÉ°SC’G áY qöùdÉH ΩÉeC’G ƒëf ∂àcôM qôªà°ùJ ,ICÉéa IQÉq«°ùdG âØsbƒJ GPEG CG

.∞∏ÿG ¤EG ºgóYÉ≤e ‘ I qƒ≤H ÜÉ qc qôdG ™ paóæj ,ICÉéa á∏eôØdG ¤EG ≥FÉ q°ùdG qô n£°†oj ÉeóæY Ü

.IQÉq« q°ùdG ‘ áàsÑnãŸG ÒZ ΩÉ°ùLC’G øY áªLÉqædG äÉHÉ°UE’G øe πu∏≤oj Éq‡ ∑ qôëqàdG øe ÜÉ qc qôdG ¿ÉeC’G áeõMCG ™næ“ ê

.AGQƒdG ¤EG I qƒ≤H OGóJQ’G øe ∂©næÁ ¿ÉeC’G ΩGõM q¿EÉa ,∞∏ÿG øe IQÉq«°S âe pó o°U GPEG O

.öUÉæ©dG á°SGQO iód AÉª∏©dG É¡e póîà°ùj á qª¡e IGOCG q…Qh qódG ∫hó÷G 37

? q…Qh qódG ∫hó÷G Ö«JôJ q” ∞«c

.äÉYƒª› ‘ á∏ pKÉªŸG q¢UGƒÿG äGP öUÉæ©dG âÑqJ oQ CG

.áØ p∏àfl äÉYƒª› ‘ §«dÉîŸGh äÉÑ scôŸGh öUÉæ©dG â© p°V oh Ü

.É k©e π nYÉØàJ »àqdG öUÉæ©dG m±ƒØ°U ‘ É k©e â© p°V oh ê

.É¡àq«∏YÉa ióe ≥ra nh 118 ¤EG 1 øe Ö«J qÎdÉH öUÉæ©dG â© p°V oh O

Grade 7 Science

15

35 SanacheckstheairpressureofhertyresbeforeandafteratripfromAbuDhabitoDubai.Abu Dhabi 200 kPa Dubai 240 kPaWhydidthepressurechange?

A Airhasenteredthroughthewallofthetyre.Asthereismoreairthereismorepressure.

B Thesizeofthetyreshasshrunk,meaningthereisthesameamountofairinasmallerspace.

C Thefrictionbetweenthetyreandtheroadmadetheairinsideheatup,andthepressureincreases.

D Asthetyreheatedupitstretchedsothereisagreatervolumeofairandhigherairpressure.

36 Whentravellingbycaritisalwaysimportanttowearaseatbelttopreventinjuriesinanaccident.Whatisthescientificexplanationforthis?

A Ifthecarslowssuddenlyyouwillkeepmovingforwardattheoriginalspeedunlessaforcestopsyou.

B Whenadriverhastobrakesuddenly,passengersarepushedhardbackwardsintotheirseat.

C Seatbeltsstoppeoplefrommovingaround,reducinginjuryfromlooseobjectsinthecar.

D Ifhitfrombehindbyacar,aseatbeltwillhelptostopyoufrombeingthrownbackwards.

37 ThePeriodicTableisanimportanttoolthatscientistsusewhenworkingwithelements.HowisthePeriodicTablearranged?

A Elementswithsimilarpropertiesarearrangedintogroups.

B Elements,compoundsandmixturesareputintodifferentgroups.

C Elementsthatreactwitheachotherareputtogetherintorows.

D Elementsareplacedinorderfrom1to118inorderofhowreactivetheyare.

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

Grade 7 Science

16

38 Khalidmadesomenotesabouthowfrictionaffectscars:

Whatarethebenefitsoffrictionfor a car?

A extraenergyisneeded

B helpsyoutostartandstopthecar

C producesusefulheatwhenneeded

D createsnoisefrommovingparts

39 Whichcircuitshowsabulbthatison?

40 Thisdiagramshowsthepositionofsome--butnotall--oftheplanetsinoursolarsystem.Thediagramisdrawntoscale.PlanetsPandQcouldbe

P Q

A Mercury Jupiter

B Venus Mercury

C Neptune Venus

D Saturn Jupiter

Impact of friction • means more energy is needed to make a car move• helps you to slow down or stop a moving car • noise created when the car's engine parts rub together • produces heat • stops car from slipping • enables car to start moving

A

Key

Connecting wire

Light bulb

Battery

Resistor

Open switch

Closed switch

B C D

A

Key

Connecting wire

Light bulb

Battery

Resistor

Open switch

Closed switch

B C D

SP QEarth Mars


16

:äGQÉq« q°ùdG ‘ ∑ÉμàM’G ÒKCÉJ áq«Ø«c ∫ƒM äÉ¶MÓŸG ¢†©H ódÉN ™ n°Vh 38

?IQÉq« q°ù∏d ∑ÉμàM’G óFGƒa Ée

áq«aÉ°VEG ábÉW ¤EG áLÉ◊G CG

.É¡aÉ≤jEGh IQÉq« q°ùdG ∂jô– ≈∏Y ∑ó pYÉ°ùoj Ü

.áLÉ◊G óæY Ió«Øe IQGôM óudƒoj ê

.ác uôëàŸG AGõLC’G øe ÉkJGƒ°UCG Q pó°üoj O

?AÉ°†oe É kMÉÑ°üe ô p¡¶oJ áq«FÉHô r¡ nc IQGO q…CG 39

.O sófi ¢SÉ«≤Ÿ É k≤ra nh º°S qôdG ™ p°V oh . q»°ùª q°ûdG ÉæeÉ¶f ‘ ,É¡©«ªL ¢ù«dh ,ÖcGƒμdG ¢†©H ™bƒe º°S qôdG í u°Vƒoj 40

¿Éfƒμj ób Qh P ¿ÉÑcƒμdG

PQCGOQÉ£ oY…Î°ûŸG

ÜIôg tõdGOQÉ£ oY

ê¿ƒàÑfIôg tõdG

Oπ nM oR…Î°ûŸG

∑ÉμàM’G ÒKCÉJ

•IQÉ q« q°ùdG ∂jôëàd ÈcCG ábÉW ¤EG áLÉ◊G »æ©j

•É¡aÉ≤jEG hCG IQÉ q« q°ùdG áYô°S ∞«ØîJ ≈∏Y ó pYÉ°ù oj

•¢†©ÑH É¡°†©H IQÉ q« q°ùdG ∑ uôfi AGõLCG ∑ÉμàMG óæY Q oó°üJ äGƒ°UCG

•IQGôM óudƒ oj

•¥’õf’G øe IQÉ q« q°ùdG ™ næÁ

•∑ qôë qàdÉH CG nóÑJ ¿CG øe IQÉ q« q°ùdG ø uμ oÁ


15

.á∏MqôdG AÉ¡àfG ó©Hh »HO ¤EG »ÑX ƒHCG øe á∏MôH É¡eÉ«b πÑb É¡JQÉq«°S äGQÉWEG ‘ AGƒ¡dG §¨°V øe AÉæ°S â≤s≤– 35

200 kPa »ÑX ƒHCG

240 kPa »HO

?§¨ q°†dG sÒ¨J GPÉŸ

.§¨ q°†dG OGORpG ,AGƒ¡dG OGORG Éªq∏c .äGQÉWE’G QGóL ÈY AGƒ¡dG π nNO CG

.ô¨°UCG áMÉ°ùe ‘ É¡°ùØf AGƒ¡dG áq« qªc OƒLh »æ©j Éq‡ ,äGQÉWE’G ºéM ¢üs∏≤J Ü

.§¨ q°†dG OGORÉa ø oî°ùj É¡∏NGO AGƒ¡dG π n©L ≥jô q£dGh äGQÉWE’G ÚH ∑ÉμàM’G ê

.AGƒ¡dG §¨°V OGORGh AGƒ¡dG ºéM OGORG ‹ÉqàdÉHh ,ø oî°ùj ƒgh QÉWE’G O só“ O

?∂dòd q»ª∏©dG Ò°ùØqàdG Ée .Ò°S çOÉM ôKEG äÉHÉ°UEG ´ƒbh …OÉØnàd ¿ÉeC’G ΩGõM ™°Vh É kªFGO qº¡ŸG øe ,IQÉq« q°ùdÉH πq≤æqàdG óæY 36

.∂rà nØ nbhCGh I qƒb ∂rà n°VnÎYG GPEG q’EG áq«°SÉ°SC’G áY qöùdÉH ΩÉeC’G ƒëf ∂àcôM qôªà°ùJ ,ICÉéa IQÉq«°ùdG âØsbƒJ GPEG CG

.∞∏ÿG ¤EG ºgóYÉ≤e ‘ I qƒ≤H ÜÉ qc qôdG ™ paóæj ,ICÉéa á∏eôØdG ¤EG ≥FÉ q°ùdG qô n£°†oj ÉeóæY Ü

.IQÉq« q°ùdG ‘ áàsÑnãŸG ÒZ ΩÉ°ùLC’G øY áªLÉqædG äÉHÉ°UE’G øe πu∏≤oj Éq‡ ∑ qôëqàdG øe ÜÉ qc qôdG ¿ÉeC’G áeõMCG ™næ“ ê

.AGQƒdG ¤EG I qƒ≤H OGóJQ’G øe ∂©næÁ ¿ÉeC’G ΩGõM q¿EÉa ,∞∏ÿG øe IQÉq«°S âe pó o°U GPEG O

.öUÉæ©dG á°SGQO iód AÉª∏©dG É¡e póîà°ùj á qª¡e IGOCG q…Qh qódG ∫hó÷G 37

? q…Qh qódG ∫hó÷G Ö«JôJ q” ∞«c

.äÉYƒª› ‘ á∏ pKÉªŸG q¢UGƒÿG äGP öUÉæ©dG âÑqJ oQ CG

.áØ p∏àfl äÉYƒª› ‘ §«dÉîŸGh äÉÑ scôŸGh öUÉæ©dG â© p°V oh Ü

.É k©e π nYÉØàJ »àqdG öUÉæ©dG m±ƒØ°U ‘ É k©e â© p°V oh ê

.É¡àq«∏YÉa ióe ≥ra nh 118 ¤EG 1 øe Ö«J qÎdÉH öUÉæ©dG â© p°V oh O

Grade 7 Science

15

35 SanacheckstheairpressureofhertyresbeforeandafteratripfromAbuDhabitoDubai.Abu Dhabi 200 kPa Dubai 240 kPaWhydidthepressurechange?

A Airhasenteredthroughthewallofthetyre.Asthereismoreairthereismorepressure.

B Thesizeofthetyreshasshrunk,meaningthereisthesameamountofairinasmallerspace.

C Thefrictionbetweenthetyreandtheroadmadetheairinsideheatup,andthepressureincreases.

D Asthetyreheatedupitstretchedsothereisagreatervolumeofairandhigherairpressure.

36 Whentravellingbycaritisalwaysimportanttowearaseatbelttopreventinjuriesinanaccident.Whatisthescientificexplanationforthis?

A Ifthecarslowssuddenlyyouwillkeepmovingforwardattheoriginalspeedunlessaforcestopsyou.

B Whenadriverhastobrakesuddenly,passengersarepushedhardbackwardsintotheirseat.

C Seatbeltsstoppeoplefrommovingaround,reducinginjuryfromlooseobjectsinthecar.

D Ifhitfrombehindbyacar,aseatbeltwillhelptostopyoufrombeingthrownbackwards.

37 ThePeriodicTableisanimportanttoolthatscientistsusewhenworkingwithelements.HowisthePeriodicTablearranged?

A Elementswithsimilarpropertiesarearrangedintogroups.

B Elements,compoundsandmixturesareputintodifferentgroups.

C Elementsthatreactwitheachotherareputtogetherintorows.

D Elementsareplacedinorderfrom1to118inorderofhowreactivetheyare.

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

Grade 7 Science

14

33 Thefollowingdiagramshowshowanigneousrockformsovertime.Themineralsthatturnintorockatthehighesttemperatureformdistinctcrystalsfirst.Whichanswershowstheorderthecrystalsformastherockcools?

34 SizeofotherbodiesinourSolarsystemrelativetotheEarth:Usethisinformationtocomparetheotherplanetsinoursolarsystem,relativetothesizeofEarth.

A Venusissimilarinsize,whileMarsismuchlarger

B Marsissmallerinsize,whileUranusislarger

C bothMercuryandMarsarelargerinsize

D bothUranusandNeptunearesmallerinsize

A

B

C

D

A

B

C

D

A

B

C

D

A

B

C

D

A

B

C

D

A

C

B

D

1000ºC 800ºC 600ºC

Object

SunMercuryVenusEarthMarsJupiterSaturnUranusNeptunePluto (at maximum orbit)2003 UB313

Relative diameter

1090.33

11

0.511944

0.250.25


14

.âbƒdG Qhôe ™e q…QÉf ôî°U π tμ°ûJ áq«Ø«c ‹ÉqàdG º°S qôdG í u°Vƒoj 33

.áë°VGh äGQƒq∏H k’ qhCG π uμ°ûoJ IQGôM áLQO ≈∏YCG óæY Qƒî°U ¤EG ∫ sƒëàJ »àqdG ¿OÉ©ŸG

?ôî q°üdG OoÈj Éª«a äGQƒq∏ÑdG π tμ°ûàd í«ë q°üdG Ö«J qÎdG ô p¡¶oJ áHÉLEG q…CG

:¢VQC’G ¤EG áÑ°ùf q»°ùª q°ûdG ÉæeÉ¶f ‘ iôNCG ΩÉ°ùLCG ΩÉéMCG 34

ÖcƒμdGq»Ñ°ùædG ô£≤dG

¢ùª q°ûdG109OQÉ£ oY0.33Iôg tõdG1

¢VQC’G1

ïj qôŸG0.5…Î°ûŸG11

π nM oR9¢SƒfGQhCG4

¿ƒàÑf4(¬d QGóe ∫ƒWCG ‘) ƒJƒ∏H0.25

UB313 20030.25.ºé◊G å«M øe , q»°ùª q°ûdG ÉæeÉ¶f ‘ iôNC’G ÖcGƒμdGh ¢VQC’G ÚH ¿ pQÉ≤oàd äÉeƒ∏©ŸG √òg Ω póîà°SpG

.ÒãμH ÈcCG ïj qôŸG q¿CG ÚM ‘ ,ºé◊G ‘ ¢VQC’G ™e Iôg tõdG ihÉ°ùàj CG

.ÈcCG ¢SƒfGQhCG q¿CG ÚM ‘ ,É kªéM ô¨°UCG ïj qôŸG Ü

.É kªéM ÈcCG ÉªgÓc ïj qôŸGh OQÉ£ oY ê

.É kªéM ô¨°UCG ÉªgÓc ¿ƒàÑfh ¢SƒfGQhCG O


13

31

.§≤a áæ q°ùdG ‘ IóMGh I qôe ¬cGƒØdG º¶©e »ræ nL qºàj

q¿CG »æ©j Gòg .áæ q°ùdG á∏«W iÈμdG ¿RÉîŸG ‘ ôsaƒàj ¬qæμd ,AÉà q°ûdG ‘ IOhôH ÌcC’G ≥WÉæŸG ‘ ìÉqØqàdG ∞ n£≤oj ,∫ÉãŸG π«Ñ°S ≈∏Y

.á∏jƒW äGÎØd IOsÈe äÉY nOƒà°ùe ‘ ¿ sõîojh OQÉÑdG ñÉæŸG äGP ≥WÉæŸG øe O nQƒà°ùoj ìÉqØqàdG

?ôeC’G Gòg øY èpàænj ób q»Ñ∏°S ÒKCÉJ q…CG

áæ q°ùdG øe äGÎØdG ¢†©H ‘ á¡cÉØdG øe ÒãμdG ¢SÉqædG π ocCÉj CG

á¡cÉØdG øe ójõŸG ∫hÉæJ óæY π°†aCG q»FGòZ ΩÉ¶f ≈∏Y ¢SÉqædG π o°üëj Ü

áq«aÉ°VEG ábÉW Ös∏£àj ¬æjõîJ hCG ìÉ qØqàdG π r≤nf ê

áq«FGò¨dG OGƒŸG øe √ÒZ ¤EG áÑ°ùf É kLGh nQ qπbCG ìÉ qØqàdG í pÑ°üoj O

.Év«Fƒ°V G kô¡ p› áe póîà°ùe ÉjÓÿG øe ÚàëjöT ¤EG ≈æe äô n¶f 32

?≈æe ¬rà n¶ nM’ Ée ∞ p°üJ á∏ªL q…CG

.í°VGh q…ƒ∏N QGóL ájDhQ π o¡°ùj ¬qfC’ áq«JÉÑf áq«∏N I áëj qöûdG ô p¡¶oJ CG

.áqjôFGO ÌcCG áq«∏ÿG πμ°T q¿C’ áq«JÉÑf áq«∏N I áëj qöûdG ô p¡¶oJ Ü

.IójóY IÒ¨°U i kƒf É¡d q¿C’ áq«JÉÑf áq«∏N II áëj qöûdG ô p¡¶oJ ê

.É¡«a IÒÑc Iƒéa ájDhQ ø pμ oÁ ¬qfC’ áq«JÉÑf áq«∏N II áëj qöûdG ô p¡¶oJ O

Grade 7 Science

13

31 Mostfruitsareonlyharvestedatonetimeoftheyear.Forexample,applesareharvestedincolderareasinwinter,butareavailableinsupermarketsallyear.Thismeansthatapplesareimportedfromcoldclimatesandstoredinchilledwarehousesforlongperiodsoftime.WhatNEGATIVEimpactmightthishave?

A peopleeattoomuchfruitatsometimesoftheyear

B peoplegetabetterdietbyeatingmorefruit

C extraenergyisrequiredtotransportorstoretheapples

D applesbecomelesspopularrelativetootherfoods

32 Monalookedattwoslidesofcellsusingalightmicroscope.WhichstatementdescribeswhatMonaobserved?

A SlideIshowsaplantcellbecauseitiseasytoseeaclearcellwall.

B SlideIshowsaplantcellbecausetheshapeofthecellismorerounded.

C SlideIIshowsaplantcellbecausethecellhasseveralsmallnuclei.

D SlideIIshowsaplantcellbecausealargevacuolecanbeseen.

nucleus

cytoplasm cell membrane

I

nucleusvacuole

cytoplasm cell wall

chloroplasts

cell membrane

II

Grade 7 Science

12

29 Whichdiagramshowstheprocessofboiling?

30 Abdulthinksthattimeandtemperatureaffectthesizeofcrystalsformed.Hethinksslowcoolingofasolutioncreateslargecrystals.Hesetupanexperimenttotestthishypothesis.Ifthehypothesisiscorrectwherewouldthelargestcrystalsform?

A TesttubeI

B TesttubeII

C TesttubeIII

D TesttubesIandIII


heat heat

liquidformed

heat heat


heat heat

liquidformed

heat heat


heat heat

liquidformed

heat heat


heat heat

liquidformed

heat heat


heat heat

liquidformed

heat heat


heat heat

liquidformed

heat heat


heat heat

liquidformed

heat heat


heat heat

liquidformed

heat heat

A B

C D


12

?¿É«∏¨dG áq«∏ªY ô p¡¶oj º r°S nQ q…CG 29

π uμ°ûoj Ée ∫ƒ∏ëŸ A»£ÑdG ójÈqàdG q¿CG ó p≤à©jh ,π sμ°ûàJ »àqdG äGQƒq∏ÑdG ºéM ‘ ¿GôuKDƒoj IQGô◊G áLQOh âbƒdG q¿CG ∫OÉY ó p≤à©j 30

.IÒÑc äGQƒq∏H

.áq«°VôØdG √òg QÉÑàN’ áHôŒ iôLCG

?É kªéM ÈcC’G äGQƒq∏ÑdG π sμ°ûàJ ¿CG ø pμ oÁ øjCG ,áë«ë°U áq«°VôØdG √òg âfÉc ¿EG

I QÉÑàNG ÜƒÑfCG CG

II QÉÑàNG ÜƒÑfCG Ü

III QÉÑàNG ÜƒÑfCG ê

IIIh I QÉÑàN’G ÉHƒÑfCG O


11

26

?πFÉ°S íLQC’G ≈∏Y »g IOÉe q…CG

âHÉK §‰ ‘ áHQÉ≤àe É¡JÉª«°ùL q¿C’ I CG

É k°†©H É¡°†©H ∫ƒM ∑ sôëàJ É¡qæμdh ,áHQÉ≤àe É¡JÉª«°ùL q¿C’ I Ü

áYöùH ∑ sôëàJh IóYÉÑàe äÉª«°ù÷G q¿C’ II ê

âHÉK §‰ ‘ ∑ sôëàJ É¡qfCÉch hóÑJ äÉª«°ù÷G q¿C’ II O

?∫ƒWC’G áaÉ°ùŸG ™ n£≤«°S øne 27

äÉYÉ°S 4 I qóŸ 1 m/s áYöùH »°û“ »àqdG πeCG CG

áYÉ°S I qóŸ 2 m/s áYöùH ¢† ocôj …òqdG ódÉN Ü

áYÉ°S ½ IóŸ 4 m/s áYöùH ¬JQÉq«°S Oƒ≤j …òqdG Oƒªfi ê

áYÉ°S ¼ IóŸ 8m/s áYöùH É¡àLG qQO Oƒ≤J »àqdG øjÒ°T O

.I º°S qôdG ô o¶foG .Oƒ«dG øe õ scôe ∫ƒ∏fi ‘ áq«∏N â© p°V oh 28

.II º°S qôdG ô o¶foG .áq«∏ÿG πNGO Oƒ«dG äÉÄjõL OóY OGR ,Ò°üb âbh ó©H

?á¶MÓŸG √ò¡d π°†aC’G Ò°ùØqàdG Ée

.áq«∏ÿG AÉ°ûZ ÈY ¢† pØîæe õ«côJ á≤£æe ¤EG m∫ÉY õ«côJ á≤£æe øe Oƒ«dG äÉÄjõL π p≤àæJ CG

.√ÈY Oƒ«dG äÉÄjõL øe §≤a π«∏b OóY QhôÃ áq«∏ÿG AÉ°ûZ í nª°ùj Ü

.É¡æe iôNCG AGõLCGh áq«∏ÿG IGƒf ƒëf Oƒ«dG Ü pòéæj ê

.áq«∏ÿG πNGO Oƒ«dG äÉÄjõL áq«∏ÿG IGƒf ™næ°üJ O

Grade 7 Science

11

26Whichsubstanceisprobablyaliquid?

A Ibecauseitsparticlesareclosetogetherinafixedpattern

B Ibecauseitsparticlesareclosetogetherbutmovingaroundeachother

C IIbecausetheparticlesarefarapartandmovingrapidly

D IIbecausetheparticlesappeartobemovinginafixedpattern

27 Whowouldcoverthegreatestdistance?

A Amal,walkingat1m/sfor4hours.

B Khaliq,runningat2m/sforanhour.

C Mahmoud,drivingacarat4m/sfor½anhour.

D Sherrine,ridingabikeat8m/sfor¼ofanhour.

28 Acellwasplacedintoaconcentratedsolutionofiodine.SeediagramIAshorttimelater,thecellhasmoreiodinemoleculesinside.SeediagramII.Whatbestexplainsthisobservation?

A Iodinemoleculesmovefromhightolowconcentrationsthroughcellmembranes.

B Cellmembranesonlyletsmallnumbersofiodinemoleculestopassthrough.

C Iodineisattractedtothenucleusandotherpartsofthecell.

D Iodinemoleculesarebeingcreatedinsidethecellbythenucleus.

cell nucleus

cell cell membrane

solution

cell nucleus

cell

= iodine molecule

III

solution

cell membrane

cell nucleus

cell cell membrane

solution

cell nucleus

cell

= iodine molecule

III

solution

cell membrane

Grade 7 Science

10

23Ifyouwantedbothbulbstoshineatthesamebrightness,whichcircuitwouldbebetter?

A Ibecausethereislessconnectingwire.

B Ibecausethecurrentisthesamearoundthecircuit.

C IIbecausethesamecurrentflowsthroughbothglobes.

D IIbecausethewireisusedmoreeffectively.

24 Everyyearmillionsofmarineanimalsarekilledasaresultofbeingcaughtinlitterwhichendsupinwaterways.Whichstrategywouldnothelptostopthisproblem?

A encouragepeopletouseplasticbagswhichbreakdownintheenvironment

B encouragepeopletousebagswhichcanbere-usedmanytimes

C usenetstopreventmarineanimalsswimmingnearwherepeoplelive

D placegratesoverdrainsthatleadintonaturalwaterwaystotraprubbish

25 Anelectricalcircuitcanbeverydangerous.Ashortcircuitallowselectricitytoflowfreelythroughanareaofleastelectricalresistance.Howdofuseshelptoreducethechanceofinjuryfromashortcircuit?

A Thefuseabsorbsspareelectricity.

B Thefusemeltsandbreakswhentoomuchcurrentflows,stoppingthecurrent.

C Thefuseismadeofasubstancewhichdoesnottransmitelectriccurrent.

D Thefuseconvertselectricityintonon-harmfulenergywaves.

Circuit I Circuit II

power source

bulb


10

23

?π°†aC’G »g áq«FÉHô r¡ nc IQGO q…CG ,É¡°ùØf ´ƒ£ q°ùdG I qó°T Éª¡«∏c ÚMÉÑ°üª∏d ¿ƒμj ¿CG nä rOQCG ¿EG

.á∏ u°UƒŸG ∑Ó°SC’G øe qπbCG OóY OƒLƒd ,I IQG qódG CG

.IQG qódG ‘ É¡°ùØf »g QÉq«qàdG I qó°T q¿C’ ,I IQG qódG Ü

.ÚMÉÑ°üŸG Óc ÈY ÜÉ°ùæj ¬°ùØf QÉq«qàdG q¿C’ ,II IQG qódG ê

.ÈcCG áq«dÉ q©ØH Ω nóîà°ùe ∂∏ q°ùdG q¿C’ ,II IQG qódG O

.√É«ŸG …QÉ› ‘ »¡àæJ »àqdG äÉjÉØtædÉH ≥n∏©J ÉeóæY áqjôëÑdG äÉfGƒ«◊G ÚjÓe äƒ“ ,áæ°S qπc ‘ 24

?á∏μ°ûŸG √òg øe qó◊G ≈∏Y ó pYÉ°ùoJ ’ äÉq«é«JGÎ°SE’G øe q…CG

á©«Ñ q£dG ‘ πs∏ëàJ »àqdG áq«μ«à°SÓÑdG ¢SÉ«cC’G ΩGóîà°SG ≈∏Y ¢SÉqædG ™«é°ûJ CG

IójóY äG qôe É¡dÉª©à°SG IOÉYEG ø pμ oÁ ¢SÉ«cCG ΩGóîà°SG ≈∏Y ¢SÉqædG ™«é°ûJ Ü

áq«æμ q°ùdG ≥WÉæŸG øe Üô≤dÉH áMÉÑ q°ùdG øe áqjôëÑdG äÉfGƒ«◊G ™æŸ äÉμÑ°T ΩGóîà°S pG ê

É¡H ≥∏©àd ∂dPh ,áq«©«Ñ q£dG √É«ŸG …QÉ› ¤EG … qODƒoJ »àqdG ±QÉ°üŸG ¥ƒa áqjójóM ¿ÉÑ°†b äÉμÑ°T ™ r°V nh O

äÉjÉØtædG

. qπbCG áq«FÉHô r¡ nc áehÉ≤e äGP á≤£æe ÈY áqj qôëH QÉq«qàdG QhôÃ IÒ°ü≤dG IQG qódG í nª°ùJ .G vóL Iô£N áq«FÉHô r¡ nμdG IQG qódG ¿ƒμJ ób 25

?IÒ°ü≤dG IQG qódG øY áŒÉqædG áHÉ°UE’G ô£N ∫ÉªàMG øe π«∏≤qàdG ≈∏Y ôgÉ°üŸG ó pYÉ°ùoJ ∞«c

.AÉHô r¡ nμdG øe ¢†FÉØdG ô¡°üpŸG q¢üàÁ CG

.QÉq«qàdG ∂dòH ™ n£≤«a ,G vóL ójó°T q»FÉHô r¡ nc QÉq«J Qhôe óæY pöùμæjh ô¡°üpŸG ô p¡°üæj Ü

. q»FÉHô r¡ nμdG QÉq«qàdG π o≤æJ ’ I qOÉe øe ´ƒæ°üe ô¡°üpŸG ê

.I qQÉ°V ÒZ ábÉW äÉLƒe ¤EG AÉHô r¡ nμdG ô¡°üpŸG ∫ uƒëoj O


9

ÉjÓÿG IO uó©àe äÉæFÉc öûÑdG .É«ëàd É¡«dEG êÉà– »àqdG äÉÑ«c qÎdG ™«ªL ≈∏Y Éæ«∏Lƒ«dG πãe áq«∏ÿG Ió«MƒdG äÉæFÉμdG …ƒà– 21

.Ék©e π nª©J ¿CG Ö péjh á°ü u°üîàe ºgÉjÓNh

?É¡H qπëj GPÉe ,¢üî°T ¿É°ùd øe IóMGh áq«∏N ádGREG ∫ÉM ‘

.É¡àdGREG ó« n©oH äƒ“ CG

. kÓ p°üØæe Év«M ÉkæFÉc É¡fƒc ¢û«©dG ‘ qôªà°ùJ Ü

.IÉ«◊G ó«b ≈∏Y AÉ≤ÑdG πLCG øe IóMGh áq«∏N øe ÌcCG ¤EG º p°ù≤æJ ê

.áqjƒ∏ÿG É¡àÑ«côJ âØs«c ¿EG π p°üØæe q»M øFÉμc ¢û«©J O

22

?π°†aC’G »g áHÉLEG q…CG

.áë«ë q°üdG qOGƒŸG §n∏îoJ ÉeóæY §≤a q»FÉ«ª«c πYÉØJ ≈∏Y π o°ü– CG

.äÓYÉØàŸG ô seóoJ ÉeóæY q»FÉ«ª«c πYÉØJ ≈∏Y π o°ü– Ü

.AÉHô r¡ nch äƒ°U èpàænj ÉeóæY q»FÉ«ª«c πYÉØJ ≈∏Y π o°ü– ê

.¿ƒq∏dG ‘ qÒ¨J π n°üM hCG RÉZ å n©ÑfG GPEG q»FÉ«ª«c πYÉØJ ∂jód ¿ƒμj ób O

Grade 7 Science

9

21 Single-celledorganismssuchasEuglenacontainallthestructurestheyneedtoexist.Humansaremulti-cellularorganismswhosecellsarespecialisedandmustworktogether.

Asinglehumantonguecellwasremovedfromaperson'smouth.Whatwouldhavehappenedtothecell?

A Itwouldhavediedsoonafterbeingremoved.

B Itwouldhavecontinuedtoliveasaseparateorganism.

C Itwouldhavedividedintomorethanonecellinordertosurvive.

D Itcouldhavelivedasaseparateorganismifitadapteditscellularstructure.

22Whichanswerisbest?

A Yougetachemicalreactiononlywhenyoumixthecorrectsubstances.

B Youhaveachemicalreactionwhenthereactantsaredestroyed.

C Youhaveachemicalreactionwhensoundandelectricityaremade.

D Youmighthaveachemicalreactionifagasisreleasedorthereisacolourchange.

How can we tell if there’s been

a chemical reaction?

Grade 7 Science

8

18Whatisthemagnifyingpowerofthismicroscope?

A 32

B 310

C 312

D 320

19 Nervecellsareimportantforourbodies'functioningbecausetheyrelayinformationquicklyoverlongdistancesinthebody,tothebrain.Whichparts(features)ofthisnervearespecificallydesignedforthispurpose?

A bothIandIV

B bothIIandIII

C bothIandIII

D bothIIandIV

20 Thesetwoimagesshowpartoftherockcycle.Whatotherelementisrequiredtopromotethisprocess?

A thepresenceofmineralsinsurroundingrocks

B entryofwaterintothecrack

C verybriefbutstrongwinds

D theinterventionofpeople

I

II

III

IVNerve Cell

0ºC

crackexpands


8

18

?(Üƒμ°Shôμ«ŸG) ô¡épŸG Gòg ÒÑμJ I qƒb »g Ée

2 × CG

10 × Ü

12 × ê

20 × O

¤EG äÉeƒ∏©ŸG áYöùH πo≤æJ É¡qfC’ ¬ØFÉXƒH º°ù÷G Ωƒ≤«d á qª¡e áq«Ñ°ü©dG ÉjÓÿG 19.º°ù÷G ‘ á∏jƒW äÉaÉ°ùe ÈY ÆÉe qódG

?±ó¡dG Gò¡d É k°ü« q°üN º sª°üe áq«Ñ°ü©dG áq«∏ÿG √òg (äÉª°S) AGõLCG øe q…CG

IVh I øe qπc CG

IIIh II øe qπc Ü

IIIh I øe qπc ê

IVh II øe qπc O

.Qƒî q°üdG IQhO øe G kAõL ¿ÉJQƒ q°üdG ¿ÉJÉg ô p¡¶oJ 20

?áq«∏ª©dG √òg õjõ©àd ΩR qÓdG ôNB’G öüæ©dG Ée

á£«ëŸG Qƒî q°üdG ‘ ¿OÉ©ŸG OƒLh CG

q≥ q°ûdG ¤EG AÉŸG ∫ƒNO Ü

áqjƒb øμdh I qóŸG Iõ«Lh ìÉjQ ê

¿É°ùfE’G π tNóJ O


7

16

.´ ró s°üdG ∫ƒW ≈∏Y äÉc qô– π©ØH É¡°†©H øY â∏ n°üØfGh ä nöùμfG óbh q»∏eôdG ôé◊Gh πrØ s£dG øe äÉ≤ÑW º°S qôdG ô p¡¶oj

?´ ró s°üdG ∫ƒW ≈∏Y áqjôî q°üdG äÉ≤Ñ q£dG √òg ¬«a âcsô– …òqdG âbƒdG ‘ íLQC’G ≈∏Y ç nóM ôNBG ôeCG q…CG

á≤«ªY ±ƒ¡c â∏ sμ°ûJ CG

ÚcGôH äQÉK Ü

q‹GõdR •É°ûf ç nóM ê

√É«ŸÉH á≤£æŸG äô pª oZ O

.iôNCG øY I qOÉe π°üØd IóMGh á≤jôW ‹ÉqàdG q»HÉ«°ùf’G § s£îŸG í u°Vƒoj 17

?Qh P øe qπc πuã oÁ GPÉe

PQ

CG¿ÉHh qò∏d á∏HÉb ÒZ áÑr∏ o°U qOGƒe¿ÉHh qò∏d á∏HÉb áÑr∏ o°U qOGƒe

Ü¿ÉHh qò∏d á∏HÉb ÒZ áÑr∏ o°U qOGƒe¿ÉHh qò∏d á∏HÉb ÒZ áÑr∏ o°U qOGƒe

êÜGòŸGÖjòŸG

OÖjòŸGÜGòŸG

Grade 7 Science

7

16Theshaleandsandstonelayersinthediagramwerebrokenandseparatedbymovementalongthefault.Whatelsemostlikelyoccurredatthetimetheserocklayersmovedalongthefault?

A deepcaveswereformed

B volcanoeserupted

C therewasearthquakeactivity

D theareawasfloodedwithwater

17 Thefollowingflowchartdescribesonemethodofremovingonesubstancefromanother.WhatdoPandQrepresent?

P Q

A Insolublesolids Solublesolids

B Solublesolids Insolublesolids

C Solute Solvent

D Solvent Solute

fault

sandstone

sandstone

shale

Mixture

Evaporatewater

Q

P

Add water

Filter

Grade 7 Science

6

13 Sanddoesnotdissolveinwater.Coppersulphatedissolveseasilyinwater.Whichstatementdescribestheseparationofsandanddissolvedcoppersulphate?

A Anewsubstancehasbeenformedsothesubstancescannotbeseparated.

B Sandcanberemovedbyfilteringthewaterthenthecoppersulphatecanberemovedbyevaporatingthewater.

C Thesandcanberemovedsinceitisinsoluble,butthecoppersulphatecannotberemovedfromthewater.

D Boththesandandthecoppersulphatecanberemovedbyusingfilterpaper.

14WhichexplanationdescribeswhydaylengthdiffersindifferentplacesonEarth?

A theamounttheEarthistilted

B thedistancefromtheEarthtotheSun

C theratetheEarthspinsonitsaxis

D theshadowoftheMoon

15 Whichdiagramshowsthemagneticfieldaroundamagnet?

Equator

Sri LankaSimilar length of day all year

AntarcticaVery long summer days Very short winter days

UAESummer days are slightlylonger than winter days

N

S

N

S

N

S

N

S

A B C D


6

.AÉŸG ‘ ádƒ¡°ùH Ühòàa ¢SÉëqædG äÉàjÈc ÉqeCG ,AÉŸG ‘ πe qôdG Ühòj ’ 13

?ÜGòŸG ¢SÉëqædG äÉàjÈch πe qôdG π r°üna ∞ p°üj »∏j Éq‡ q…CG

.ÚJ qOÉŸG π°üa ø pμ oÁ ’ ‹ÉqàdÉHh ,IójóL I qOÉe â∏ sμ°ûJ CG

.AÉŸG ÒîÑàH ¢SÉëqædG äÉàjÈc π r°üna ø pμ oÁ ,Ég nó©Hh ,AÉŸG í«°TÎH πe qôdG ádGREG ø pμ oÁ Ü

.AÉŸG øe É¡àdGREG ø pμ oÁ Óa ¢SÉëqædG äÉàjÈc É qeCG ,¿ÉHh qòdG ËóY ¬qfCG ÉÃ πe qôdG π r°üna ø pμ oÁ ê

.í«°TôJ ¥Qh ∫Éª©à°SÉH ¢SÉëqædG äÉàjÈch πe qôdG Óc π r°üna ø pμ oÁ O

14

?¢VQC’G í£°S ≈∏Y áØ p∏àfl øcÉeCG ‘ QÉ¡qædG ∫ƒW ∞p∏àîj GPÉŸ uÚÑoj Ò°ùØJ q…CG

¢VQC’G ¿Ó«e áLQO CG

¢ùª q°ûdG ¤EG ¢VQC’G øe áaÉ°ùŸG Ü

ÉgQƒfi ∫ƒM ¢VQC’G ¿GQhO ∫ só©e ê

ôª≤dG qπX O

?¢ù«WÉæ¨ŸG ∫ƒM q»°ù«WÉæ¨ŸG π≤◊G ô p¡¶oj qÊÉ«H º r°S nQ q…CG 15

N

S

N

S

N

S

N

S

A B C D

ájhÉ°ùàe (QÉ¡f ™ªL) ô o¡tædG

AÉà q°ûdG ∫GƒW ∫ƒ q£dG

ÉμfÓjöS

AGƒà°S’G q§N

(Éμ«àcQÉàfCG) áq«Hƒæ÷G áq«Ñ£≤dG I qQÉ≤dG

G vóL á∏jƒW ∞« q°üdG ô o¡of

G vóL IÒ°üb AÉà q°ûdG ô o¡of

äGQÉeE’G

AÉà q°ûdG ô o¡of øe π«∏≤H ∫ƒWCG ∞« q°üdG ô o¡of


5

.áq«°ù«WÉæëhô r¡ nμdÉH ±nô©oj Ée Gògh , q»°ù«WÉæë π≤M èpàænj ,Ée qõ∏a ‘ q»FÉHô r¡ nc QÉq«J Qhôe óæY 10

?áq«°ù«WÉæëhô r¡ nμdG á©aG qôdG π nª©J ∞«c uÚÑoj Ò°ùØJ q…CG

. qõ∏a øe áYƒæ°üe ÒZ G vóL á∏«≤K É keÉ°ùLCG § p≤à∏J ¿CG øe á©aG qôdG AÉHô r¡ nμdG ø uμ o“ CG

.É¡WÉ≤°SE’ AÉHô r¡ nμdG ™ n£≤oJh ,á∏«≤qãdG áqj qõ∏ØdG ΩÉ°ùLC’G •É≤àd’ AÉHô r¡ nμdG π s̈ °ûoJ Ü

.∑ sôëàJ IÒNC’G √òg π n©éj Éq‡ ,áqj qõ∏ØdG ΩÉ°ùLC’G ô uØæoJ ,¢ù«WÉæë ÈY AÉHô r¡ nμdG qô“ ÉeóæY ê

á°ü s°üîŸG øcÉeC’G ‘ ÈcCG áMÉ°ùe ÒaƒJ ≈∏Y ó pYÉ°ùoj Éq‡ ,äG qõ∏ØdG á«FÉHô r¡ nμdG §fÉ¨ŸG ≥ në°ùJ ¿CG ø pμ oÁ O

.¿OÉ©ŸG á°VGô o≤d

.É¡«a áq«M äÉfGƒ«◊G AÉ≤Ñd á«°SÉb äÉÄ«H iQÉë q°üdG 11

?áÄ«ÑdG √òg ‘ Év«M ≈≤Ñj »c πª né∏d π°†aC’G ƒg ∞t«μJ q…CG

.IÒãc ¿ƒμJh áq«M ÉgQÉ¨°U ∫Éª p÷G óp∏J CG

.¿RƒdG á∏«≤K áq«ª¶Y πcÉ«g ∫Éª pé∏d Ü

.É¡JÉH nó nM ‘ áq«FGò¨dG qOGƒŸG øjõîJ ∫Éª p÷G ™«£à°ùJ ê

.Ée qóM ¤EG á«dÉY äÉYr oöùH ¢† ocôJ ¿CG ∫Éª pé∏d ø pμ oÁ O

?¢ùª q°ûdG ∫ƒM ôª≤dGh ¢VQC’G ácôM ô¡¶oj »£«£îJ º r°S nQ q…CG 12

Grade 7 Science

5

10 Whenanelectriccurrentpassesthroughmetal,itcausesamagneticfield.Thisiscalledelectromagnetism.Whichexplanationshowshowanelectromagneticcraneworks?

A Electricityallowsthecranetopickupveryheavyobjectsnotmadeofmetal.

B Electricityisswitchedontopickupheavymetalobjectsandswitchedofftodropthem.

C Whenelectricityispassedthroughamagnet,itrepelsmetalobjects,makingthemmove.

D Electromagnetscancrushmetals,helpingtomakemoreroominascrapmetalyard.

11 Desertsareharshenvironmentsforanimalstosurvivein.Whichadaptationofthecamelbesthelpsittosurviveinthisenvironment?

A Camelsgivebirthtomanylivebabies.

B Camelshaveheavybonyskeletons.

C Camelscanstorenutrientsintheirhumps.

D Camelscanrunatmoderatelyhighspeeds.

12 WhichdiagramshowsthemovementoftheEarthandtheMoonaroundtheSun?

Sun

Moon

Sun

Moon

Sun


Sun

Moon

A B C D

Sun

Moon

Sun

Moon

Sun


Sun

Moon

A B C D

Sun

Moon

Sun

Moon

Sun


Sun

Moon

A B C D

Sun

Moon

Sun

Moon

Sun


Sun

Moon

A B C D

Sun

Moon

Sun

Moon

Sun


Sun

Moon

A B C D

Grade 7 Science

4

8 Theglidershownheretakesofffromaclifftopnearabeach.Whatistheglidertakingadvantageof?

A radiatedheat,whichpromotesflight

B convectioncurrentswhichcausewarmairtorise

C windsblowingfromcoldairuphightowarmairnearthebeach

D stillairinfrontoftheclifffacewhichallowssmoothflight

9 Agroupofstudentswasdiscussingdensity.Theteacheraskedthestudentsthesetwoquestions: "Howmuchspacewould1kilogramofgoldtakeup?" "Howmuchspacewould1kilogramoffeatherstakeup?"Hereishowfourstudentsresponded.Whoiscorrect?

A Ali

B Bilal

C Mahmoud

D Mustafa

Ali

Bilal

Mahmoud

Mustafa

1 kg of gold isabout the size of a mobile phone.1 kg of feathers is about the size

of a large pillow.

1 kilogram of gold wouldbe about the size of a large suitcase.

1 kilogram of feathers is about the size of a refrigerator.

Both the gold and thefeathers would take up thesame amount of space.

1 kg of featherswould take up slightly more

space than 1 kg of gold.


4

8

.ÅWÉ°T øe Üô≤dÉH ±ô oL ≈∏YCG øe IQƒ q°üdG ‘ áæs«ÑŸG áq«YGöûdG IôFÉ q£dG ≥p∏£æJ

?áq«YGöûdG IôFÉ q£dG ó«Øà°ùJ s·

¿GÒ q£dG R uõ©oj Éq‡ ,áã p©ÑæŸG IQGô◊G CG

™ pØJôj ÅaG qódG AGƒ¡dG π n©Œ »àqdG q…QGô◊G πª◊G äGQÉq«J Ü

ÅWÉ q°ûdG Üôb ÅaG qódG AGƒ¡dG ƒëf ±ôo÷G ≈∏YCG OQÉÑdG AGƒ¡dG á¡L øe qÖ¡oJ »àqdG ìÉj qôdG ê

¢ù p∏ n°S ¿GÒ£H í nª°ùj …òqdG ±ôo÷G á¡LGh ΩÉeCG øcÉ q°ùdG AGƒ¡dG O

:ÚdGDƒ q°ùdG øjòg ºu∏©ŸG º¡«∏Y ì nôW .áaÉãμdG ∫ƒM ¢ûnbÉæàJ ò«eÓqàdG øe áYƒª› âfÉc 9

z?Ög qòdG øe ΩGôZƒ∏«c 1 ¬∏ n̈ °ûj …òqdG õu«◊G Ée{

z?¢ûj qôdG øe ΩGôZƒ∏«c 1 ¬∏ n̈ °ûj …òqdG õu«◊G Ée{

.ò«eÓqàdG øe á©HQCG äÉHÉLEG √òg

?ÜGƒ°U ≈∏Y º¡æe øne

q»∏Y CG

∫ÓH Ü

Oƒªfi ê

≈Ø£°üe O


3

?äÉ£«ëŸG ‘ áq«HPÉ÷G ôuKDƒoJ ∞«c 4

.êGƒeC’G çhóëH ÖsÑ°ùàJ CG

.»eÉfƒ°ùàdG äÉLƒª`H ÖsÑ°ùàJ Ü

.¥QRC’G ¿ƒq∏dG É¡«£©oJ ê

.Qõ÷Gh qóŸG ç pó o– O

É¡LÉàëj »àqdG äÉæ«eÉà«ØdG qπc ™næ°üJ ¿CG º«KGôé∏d ø pμ oÁ .Ióq«L á që°U ‘ AÉ≤Ñ∏d äÉæ«eÉà«ØdG ¢†©H ∫hÉæJ ¤EG ¢SÉqædG êÉàëj 5.äÉæ«eÉà«ØdG øe IóFGR áq« qªc R pôØJ πH ¢VôŸG ÖuÑ°ùoJ ’h ,¢SÉqædG AÉ°ûMCG πNGO º«KGô÷G ¢†©H ¢û«©J .¢SÉqædG

?º«KGô÷G √òg QhO ∞ p°üj »∏j Éq‡ ∫ rƒnb q…CG

.I qQÉ°V É¡q∏c ºgó∏L ≈∏Yh ¢SÉqædG πNGO ¢û«©J »àqdG º«KGô÷G CG

.äÉæ«eÉà«ØdG ≈∏Y ∫ƒ°üë∏d º«KGô÷G øe ójõŸG ∫hÉæàH q»FGò¨dG º¡eÉ¶f Ú°ù– ¢SÉædG ™«£à°ùj Ü

.äÉæ«eÉà«ØdG øe ÒãμdG ÒãμdG RGôaEÉH ¢VôŸG º«KGô÷G ¢†©H ÖuÑ°ùoJ ¿CG ø pμ oÁ ê

.Ió«ØŸG äÉæ«eÉà«ØdG è pàæoJ É¡qfC’ á©aÉf »gh ¢SÉqædG AÉ°ûMCG πNGO º«KGô÷G ¢†©H ¢û«©J O

?áHôéqàdG √òg ‘ ç oóë«°S GPÉe 6

.è∏qãdG äÉÑ s©μe Úî°ùJ óæY AÉŸG QÉîH ô sîÑàj CG

.¬æ«î°ùJ óæY πFÉ°S ¤EG Ör∏ t°üdG ó«∏÷G ∫ sƒëàj Ü

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Grade 7 Science

3

4 Howdoesgravityaffecttheoceans?

A Itmakesthewaves.

B ItcreatesTsunamis.

C Itmakesthemblue.

D Itcreatesthetides.

5 Peopleneedtoeatcertainvitaminstostayhealthy.Microbescanmakeallthevitaminstheyrequire.Somemicrobesliveinsidepeople'sguts,donotcausediseasebutdoreleaseexcessvitamins.Whichstatementdescribestheroleofthesemicrobes?

A Allmicrobeslivinginsidepeopleandontheirskinareharmful.

B Peoplecanimprovetheirdietbyeatingmoremicrobestogetvitamins.

C Somemicrobescancausediseasebyreleasingtoomanyvitamins.

D Microbesliveinpeople’sgutsandarehelpfulbecausetheyproduceusefulvitamins.

6 Whatwillhappeninthisexperiment?

A Steamevaporateswhentheicecubesareheated.

B Thesolidicewillbecomeliquidwhenheated.

C ApplyingheatwillconvertH2Otogasorsteam.

D Steamwillbereleasedastheiceturnstoliquid.

7 Whichoftheserocksismostprobablyformedfromerodedsediment?

A bothRockIandRockII

B neitherRockInorRockII

C onlyRockI

D onlyRockII

ice cubes

watchglass

gauze mat

tripod

SOURCEOF HEAT

10 mm 10 mmI II

Grade 7 Science

2

1 Whichtablegivesthechemicalsymbolfortheseelements?

2 Whatistheroleofthecellmembrane?

A Itcontrolsalltheactivitiesofthecell.

B Itiswheremanychemicalreactionstakeplace.

C Itregulatesmovementofsubstancesinandoutofthecell.

D Itiswherenutrientsarestoredwhichgiveenergytothecell.

3Howdotheinnerplanetsdifferfromtheouterplanets?


A small,mainlymadeofgas large,rocky

B mainlyrocky,revolveonaxis mainlymadeofgas,donotrevolve

C shorterorbit,mainlymadeofgas longerorbit,rocky

D small,mainlyrocky large,mainlymadeofgas


Sodium SChlorine C


Sodium NaChlorine Cl

Element SymbolHydrogen HySodium SoChlorine Ch

Element SymbolHydrogen HSodium NChlorine C

A

C

B

D

Sun

Mercury


Earth

Jupiter

Venus Mars SaturnNeptune

Uranus

Animal cell:

cytoplasm

nucleus

cell membrane


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Science

Grade

TEST INSTRUCTIONS

Pleasemakesurethatyouhaveaseparateanswersheetwiththistestpaper.

Pleasecheckthattheanswersheethasyourdetailsprintedonit.Ifnot,printyournameanddateofbirthonyouranswersheetintheareaprovided.

Pleasecheckthatthesubjectandgradenumberonyouranswersheetmatchesthisquestionpaper.

Thistesthas40 QUESTIONS.Eachquestionhasfourpossibleanswers.Onlyoneiscorrect.

Pleaseuseapencilonlytoshadeintheanswerbubbleofyourchoiceonyouranswersheet.

ChoosethecorrectanswerfromA,B,CorDandshadethisbubbleinonyourSCIENCE ANSWER SHEET.

Ifyoumakeamistakethenruboutyouranswercompletelyandshadeinthebubbleofyournewanswer.

AllanswersmustbemarkedonyourANSWER SHEET.Youareallowed1 hour and 15 minutesforthistest.

May 2010

External Measurement of Student Achievement

2010 emsa science g07

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