2010 emsa science g07
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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
Inner planets Outer planets
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.
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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
EarthEarthEarthEarth Moon
Sun
Moon
A B C D
Sun
Moon
Sun
Moon
Sun
EarthEarthEarthEarth Moon
Sun
Moon
A B C D
Sun
Moon
Sun
Moon
Sun
EarthEarthEarthEarth Moon
Sun
Moon
A B C D
Sun
Moon
Sun
Moon
Sun
EarthEarthEarthEarth Moon
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
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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
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IVh I øe qπc CG
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.Qƒî q°üdG IQhO øe G kAõL ¿ÉJQƒ q°üdG ¿ÉJÉg ô p¡¶oJ 20
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q≥ q°ûdG ¤EG AÉŸG ∫ƒNO Ü
áqjƒb øμdh I qóŸG Iõ«Lh ìÉjQ ê
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Ωƒ``∏©dG ™HÉ°ùdG ∞°üdG
9
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.Ék©e π nª©J ¿CG Ö péjh á°ü u°üîàe ºgÉjÓNh
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.É¡àdGREG ó« n©oH 䃓 CG
. kÓ p°üØæe Év«M ÉkæFÉc É¡fƒc ¢û«©dG ‘ qôªà°ùJ Ü
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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 䃰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
Ωƒ``∏©dG ™HÉ°ùdG ∞°üdG
10
23
?π°†aC’G »g áq«FÉHô r¡ nc IQGO q…CG ,É¡°ùØf ´ƒ£ q°ùdG I qó°T ɪ¡«∏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 䃓 ,áæ°S qπc ‘ 24
?á∏μ°ûŸG √òg øe qó◊G ≈∏Y ó pYÉ°ùoJ ’ äÉq«é«JGΰSE’G øe q…CG
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IójóY äG qôe É¡dɪ©à°SG IOÉYEG ø pμ oÁ ¢SÉ«cCG ΩGóîà°SG ≈∏Y ¢SÉqædG ™«é°ûJ Ü
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äÉjÉØtædG
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?IÒ°ü≤dG IQG qódG øY áŒÉqædG áHÉ°UE’G ô£N ∫ɪàMG øe π«∏≤qàdG ≈∏Y ôgÉ°üŸG ó pYÉ°ùoJ ∞«c
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. q»FÉHô r¡ nμdG QÉq«qàdG π o≤æJ ’ I qOÉe øe ´ƒæ°üe ô¡°üpŸG ê
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Ωƒ``∏©dG ™HÉ°ùdG ∞°üdG
11
26
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É k°†©H É¡°†©H ∫ƒM ∑ sôëàJ É¡qæμdh ,áHQÉ≤àe É¡Jɪ«°ùL q¿C’ I Ü
áYöùH ∑ sôëàJh IóYÉÑàe äɪ«°ù÷G q¿C’ II ê
âHÉK §‰ ‘ ∑ sôëàJ É¡qfCÉch hóÑJ äɪ«°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 Qhôà 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
solid particlesvibrate
heat heat
liquidformed
heat heat
solid particlesvibrate
heat heat
liquidformed
heat heat
solid particlesvibrate
heat heat
liquidformed
heat heat
solid particlesvibrate
heat heat
liquidformed
heat heat
solid particlesvibrate
heat heat
liquidformed
heat heat
solid particlesvibrate
heat heat
liquidformed
heat heat
solid particlesvibrate
heat heat
liquidformed
heat heat
A B
C D
Ωƒ``∏©dG ™HÉ°ùdG ∞°üdG
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
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I QÉÑàNG ܃ÑfCG CG
II QÉÑàNG ܃ÑfCG Ü
III QÉÑàNG ܃ÑfCG ê
IIIh I QÉÑàN’G ÉHƒÑfCG O
Ωƒ``∏©dG ™HÉ°ùdG ∞°üdG
13
31
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.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 Ωɶf ≈∏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
Ωƒ``∏©dG ™HÉ°ùdG ∞°üdG
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 ɪ«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 Éæeɶf ‘ iôNCG ΩÉ°ùLCG ΩÉéMCG 34
ÖcƒμdGq»Ñ°ùædG ô£≤dG
¢ùª q°ûdG109OQÉ£ oY0.33Iôg tõdG1
¢VQC’G1
ïj qôŸG0.5…ΰûŸG11
π nM oR9¢SƒfGQhCG4
¿ƒàÑf4(¬d QGóe ∫ƒWCG ‘) ƒJƒ∏H0.25
UB313 20030.25.ºé◊G å«M øe , q»°ùª q°ûdG Éæeɶf ‘ 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 ɪgÓc ïj qôŸGh OQÉ£ oY ê
.É kªéM ô¨°UCG ɪgÓc ¿ƒàÑfh ¢SƒfGQhCG O
Ωƒ``∏©dG ™HÉ°ùdG ∞°üdG
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 ɪq∏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 Aɪ∏©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∏ pKɪŸG 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
Ωƒ``∏©dG ™HÉ°ùdG ∞°üdG
16
:äGQÉq« q°ùdG ‘ ∑ÉμàM’G ÒKCÉJ áq«Ø«c ∫ƒM äɶMÓŸG ¢†©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 Éæeɶf ‘ ,É¡©«ªL ¢ù«dh ,ÖcGƒμdG ¢†©H ™bƒe º°S qôdG í u°Vƒoj 40
¿Éfƒμj ób Qh P ¿ÉÑcƒμdG
PQCGOQÉ£ oY…ΰûŸG
ÜIôg tõdGOQÉ£ oY
꿃àÑfIôg tõdG
Oπ nM oR…ΰûŸG
∑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
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
Ωƒ``∏©dG ™HÉ°ùdG ∞°üdG
16
:äGQÉq« q°ùdG ‘ ∑ÉμàM’G ÒKCÉJ áq«Ø«c ∫ƒM äɶMÓŸG ¢†©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 Éæeɶf ‘ ,É¡©«ªL ¢ù«dh ,ÖcGƒμdG ¢†©H ™bƒe º°S qôdG í u°Vƒoj 40
¿Éfƒμj ób Qh P ¿ÉÑcƒμdG
PQCGOQÉ£ oY…ΰûŸG
ÜIôg tõdGOQÉ£ oY
꿃àÑfIôg tõdG
Oπ nM oR…ΰûŸG
∑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
Ωƒ``∏©dG ™HÉ°ùdG ∞°üdG
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 ɪq∏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 Aɪ∏©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∏ pKɪŸG 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
Ωƒ``∏©dG ™HÉ°ùdG ∞°üdG
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 ɪ«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 Éæeɶf ‘ iôNCG ΩÉ°ùLCG ΩÉéMCG 34
ÖcƒμdGq»Ñ°ùædG ô£≤dG
¢ùª q°ûdG109OQÉ£ oY0.33Iôg tõdG1
¢VQC’G1
ïj qôŸG0.5…ΰûŸG11
π nM oR9¢SƒfGQhCG4
¿ƒàÑf4(¬d QGóe ∫ƒWCG ‘) ƒJƒ∏H0.25
UB313 20030.25.ºé◊G å«M øe , q»°ùª q°ûdG Éæeɶf ‘ 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 ɪgÓc ïj qôŸGh OQÉ£ oY ê
.É kªéM ô¨°UCG ɪgÓc ¿ƒàÑfh ¢SƒfGQhCG O
Ωƒ``∏©dG ™HÉ°ùdG ∞°üdG
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 Ωɶf ≈∏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
solid particlesvibrate
heat heat
liquidformed
heat heat
solid particlesvibrate
heat heat
liquidformed
heat heat
solid particlesvibrate
heat heat
liquidformed
heat heat
solid particlesvibrate
heat heat
liquidformed
heat heat
solid particlesvibrate
heat heat
liquidformed
heat heat
solid particlesvibrate
heat heat
liquidformed
heat heat
solid particlesvibrate
heat heat
liquidformed
heat heat
solid particlesvibrate
heat heat
liquidformed
heat heat
A B
C D
Ωƒ``∏©dG ™HÉ°ùdG ∞°üdG
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
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I QÉÑàNG ܃ÑfCG CG
II QÉÑàNG ܃ÑfCG Ü
III QÉÑàNG ܃ÑfCG ê
IIIh I QÉÑàN’G ÉHƒÑfCG O
Ωƒ``∏©dG ™HÉ°ùdG ∞°üdG
11
26
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âHÉK §‰ ‘ áHQÉ≤àe É¡Jɪ«°ùL q¿C’ I CG
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áYöùH ∑ sôëàJh IóYÉÑàe äɪ«°ù÷G q¿C’ II ê
âHÉK §‰ ‘ ∑ sôëàJ É¡qfCÉch hóÑJ äɪ«°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 Qhôà 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
Ωƒ``∏©dG ™HÉ°ùdG ∞°üdG
10
23
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.√É«ŸG …QÉ› ‘ »¡àæJ »àqdG äÉjÉØtædÉH ≥n∏©J ÉeóæY áqjôëÑdG äÉfGƒ«◊G ÚjÓe 䃓 ,áæ°S qπc ‘ 24
?á∏μ°ûŸG √òg øe qó◊G ≈∏Y ó pYÉ°ùoJ ’ äÉq«é«JGΰSE’G øe q…CG
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IójóY äG qôe É¡dɪ©à°SG IOÉYEG ø pμ oÁ ¢SÉ«cCG ΩGóîà°SG ≈∏Y ¢SÉqædG ™«é°ûJ Ü
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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 Qhôà IÒ°ü≤dG IQG qódG í nª°ùJ .G vóL Iô£N áq«FÉHô r¡ nμdG IQG qódG ¿ƒμJ ób 25
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. 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
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9
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.Ék©e π nª©J ¿CG Ö péjh á°ü u°üîàe ºgÉjÓNh
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.É¡àdGREG ó« n©oH 䃓 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
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.AÉHô r¡ nch 䃰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
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8
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2 × CG
10 × Ü
12 × ê
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7
16
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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
Ωƒ``∏©dG ™HÉ°ùdG ∞°üdG
6
.AÉŸG ‘ ádƒ¡°ùH Ühòàa ¢SÉëqædG äÉàjÈc ÉqeCG ,AÉŸG ‘ πe qôdG Ühòj ’ 13
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.í«°TôJ ¥Qh ∫ɪ©à°SÉH ¢SÉëqædG äÉàjÈch πe qôdG Óc π r°üna ø pμ oÁ O
14
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¢ùª q°ûdG ¤EG ¢VQC’G øe áaÉ°ùŸG Ü
ÉgQƒfi ∫ƒM ¢VQC’G ¿GQhO ∫ só©e ê
ôª≤dG qπX O
?¢ù«WÉ樟G ∫ƒM q»°ù«WÉ樟G 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
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G vóL á∏jƒW ∞« q°üdG ô o¡of
G vóL IÒ°üb AÉà q°ûdG ô o¡of
äGQÉeE’G
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Ωƒ``∏©dG ™HÉ°ùdG ∞°üdG
5
.áq«°ù«WÉæ¨ehô r¡ nμdÉH ±nô©oj Ée Gògh , q»°ù«WÉæ¨e π≤M èpàænj ,Ée qõ∏a ‘ q»FÉHô r¡ nc QÉq«J Qhôe óæY 10
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. 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
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.∑ sôëàJ IÒNC’G √òg π n©éj Éq‡ ,áqj qõ∏ØdG ΩÉ°ùLC’G ô uØæoJ ,¢ù«WÉæ¨e 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 §fɨŸG ≥ 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 ÉgQɨ°U ∫ɪ p÷G óp∏J CG
.¿RƒdG á∏«≤K áq«ª¶Y πcÉ«g ∫ɪ pé∏d Ü
.É¡JÉH nó nM ‘ áq«FGò¨dG qOGƒŸG øjõîJ ∫ɪ p÷G ™«£à°ùJ ê
.Ée qóM ¤EG á«dÉY äÉYr oöùH ¢† ocôJ ¿CG ∫ɪ 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
EarthEarthEarthEarth Moon
Sun
Moon
A B C D
Sun
Moon
Sun
Moon
Sun
EarthEarthEarthEarth Moon
Sun
Moon
A B C D
Sun
Moon
Sun
Moon
Sun
EarthEarthEarthEarth Moon
Sun
Moon
A B C D
Sun
Moon
Sun
Moon
Sun
EarthEarthEarthEarth Moon
Sun
Moon
A B C D
Sun
Moon
Sun
Moon
Sun
EarthEarthEarthEarth Moon
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.
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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?
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 H
Sodium SChlorine C
Element SymbolHydrogen H
Sodium NaChlorine Cl
Element SymbolHydrogen HySodium SoChlorine Ch
Element SymbolHydrogen HSodium NChlorine C
A
C
B
D
Sun
Mercury
Inner planets Outer planets
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
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