bengkel skema pemarkahan fizik kertas`3
TRANSCRIPT
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Skema Pemarkahan FizikSkema Pemarkahan Fizik
Kertas 3Kertas 3
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Section ASection AQ1(a)(i).Q1(a)(i).
State the manipulative variableState the manipulative variablecorrectly(1)correctly(1)
umber o! turnsumber o! turns
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1(a)(ii)1(a)(ii)
State the respon"in# variable correctly(1)State the respon"in# variable correctly(1)
len#th o! the coillen#th o! the coil
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1(a)(iii)1(a)(iii)
State the constant variable correctly.(1)State the constant variable correctly.(1)
$iameter o! %ire.&&$iameter o! %ire.&&thickness o! %ire&&thickness o! %ire&&
cross sectional area o! %irecross sectional area o! %ire
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1(b)(i)1(b)(i)
'ecor" the zero error correctly.'ecor" the zero error correctly.(1 mark)(1 mark)
*.*+ cm *.*+ cm
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1(b) (ii)1(b) (ii)
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1(c)1(c)
$ra% a complete #raph o! , a#ainst n.$ra% a complete #raph o! , a#ainst n. -ick-ick on the !ollo%in# aspects. on the !ollo%in# aspects. Sho% , on the vertical a/is an" n on theSho% , on the vertical a/is an" n on the
horizontal a/is.horizontal a/is. State the units o! the variables correctly.State the units o! the variables correctly. 0oth a/es are marke" %ith uni!orm scale.0oth a/es are marke" %ith uni!orm scale. All !ive points are plotte" correctly( +All !ive points are plotte" correctly( + ). ! only). ! only
three points a%ar" 1three points a%ar" 1 .. 0est !it strai#ht line is "ra%n.0est !it strai#ht line is "ra%n. Sho% the minimum size o! #raph o! at leastSho% the minimum size o! #raph o! at least
2 / ( + cm / + cm ) s4uare.2 / ( + cm / + cm ) s4uare.
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5/ample5/ample
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ScoreScore
Number ofNumber of ScoreScore
66 22
2727 33 33
++ ++
11 11
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1(")1(")
State the correct relationship bet%een ,State the correct relationship bet%een ,an"an" nn.(the #raph must be e/trapolate").(the #raph must be e/trapolate")
, is "irectly proportional to the number , is "irectly proportional to the numbero! turnso! turns nn
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Section A (Q1)Section A (Q1)the relation of graphthe relation of graph
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+(a)(i)+(a)(i)
State the chan#e correctly.(1)State the chan#e correctly.(1)
8 increases. 8 increases.
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+(a)(ii)+(a)(ii)
Sho% on the #raph %ay to "etermine the value o! 8 %henSho% on the #raph %ay to "etermine the value o! 8 %hen$ 9 1.1* m. (1)$ 9 1.1* m. (1)
h&m
a&ms+
1.1*
*.12
State the value o! 8 correctly 8 9 *.12 (1)
8&
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+(a)(iii)+(a)(iii)
$&
8&cm
,
K
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+(b)+(b)
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+(c)+(c)
(i) -he #ra"ient "ecreases (1)(i) -he #ra"ient "ecreases (1)
(ii) :avelen#th is "irectly proportional to(ii) :avelen#th is "irectly proportional to #ra"ient.&& :avelen#th o! re" li#ht is#ra"ient.&& :avelen#th o! re" li#ht is
bi##er than the blue li#ht. (1)bi##er than the blue li#ht. (1)
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+(")+(")
State one correct precautions ( 1 )State one correct precautions ( 1 )
Position o! the eyes perpen"icular to the Position o! the eyes perpen"icular to thescale& rea"in# o! the ruler.&&scale& rea"in# o! the ruler.&&
e/periment is "one in a "ark room. e/periment is "one in a "ark room.
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Section 0Section 0
3(a)3(a)State a suitable in!erenceState a suitable in!erence.(1).(1)
Acceleration o! the car "epen"s on the Acceleration o! the car "epen"s on themass.mass.
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3(b)3(b)
State a correct hypothesisState a correct hypothesis.(1).(1)
-he bi##er the.......... the lo%er is the -he bi##er the.......... the lo%er is the;;;..;;..&&;;;..;;..&&
-he acceleration increases as the mass -he acceleration increases as the mass"ecreases"ecreases
mass
acceleration
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3(c)(i)3(c)(i)
State the aim o! the e/perimentState the aim o! the e/perimentcorrectly(1).correctly(1).
-o investi#ate the relationship bet%een the-o investi#ate the relationship bet%een the;;;;;; an" ;;;;;;;;..;;;;;; an" ;;;;;;;;..mass acceleration o! the
trolley
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3(c)(ii)3(c)(ii)
State the manipulateve an" respon"in#State the manipulateve an" respon"in#variables correctlyvariables correctly.(1).(1)
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3(c)(iii)3(c)(iii)
,ist out the important apparatus an",ist out the important apparatus an"materials.&& $ia#ram(1)materials.&& $ia#ram(1)
trolley slotte" %ei#ht ticker timertrolley slotte" %ei#ht ticker timer tickertickertape, ruler/metre rule, string/elastictape, ruler/metre rule, string/elasticchord, pulley, poer supply,chord, pulley, poer supply, connectin#connectin#%ire !riction compensate" incline" plane%ire !riction compensate" incline" planean" blocks.an" blocks.
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3(c)(iv)3(c)(iv) State a !unctional arran#ementState a !unctional arran#emento! the apparatus %ith the ai" o! labelle"o! the apparatus %ith the ai" o! labelle"
"ia#ram(1)"ia#ram(1)
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3(c)(v) State the metho"s to control3(c)(v) State the metho"s to controlthe manipulate"the manipulate"
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3(c)(v) State the metho"s to control3(c)(v) State the metho"s to controlthe respon"in# variablesthe respon"in# variables
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3(c)(v) 'epeat the e/periment at3(c)(v) 'epeat the e/periment atleast times(1)least times(1)
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3(c)(vi) Sho% ho% the "ata is3(c)(vi) Sho% ho% the "ata istabulate"tabulate"
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3(c)(vii) State ho% the "ata is3(c)(vii) State ho% the "ata isanalyse"analyse"
Plot a #raph o! acceleration a#ainst massPlot a #raph o! acceleration a#ainst mass
or (Sketch o! the #raph is optional)or (Sketch o! the #raph is optional)
m&k#
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(a) State a suitable in!erence(1)(a) State a suitable in!erence(1)
-he lou"ness o! the rin# "epen"s on the-he lou"ness o! the rin# "epen"s on thenumber o! turns o! %ire.&&number o! turns o! %ire.&&
-he stren#th o! the ma#netic !iel"-he stren#th o! the ma#netic !iel""epen"s on the number o! the turns o!"epen"s on the number o! the turns o!%ire.%ire.
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(b) State a relevant(b) State a relevanthypothesis(%ith "irection)(1)hypothesis(%ith "irection)(1)
-he bi##er the number o! turn the-he bi##er the number o! turn thestron#er the stren#th o! ma#netic !iel".stron#er the stren#th o! ma#netic !iel".
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(c)(i) State the aim o! the(c)(i) State the aim o! thee/periment(1)e/periment(1)
-o investi#ate the relationship bet%een the -o investi#ate the relationship bet%een the
number o! turns an" the stren#th o! thenumber o! turns an" the stren#th o! the
ma#netic !iel".ma#netic !iel".
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(c)(ii) State the manipulate"(c)(ii) State the manipulate"variable an" respon"in# variable(1)variable an" respon"in# variable(1)
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(c)(iii) ,ist out the important(c)(iii) ,ist out the importantapparatus an" materials(1)apparatus an" materials(1)
Po%er supplyPo%er supply so!t iron core pins so!t iron core pinsinsulate" copper %ires retort stan" %ithinsulate" copper %ires retort stan" %ithclamps.clamps.
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(c)(iv) State a !unctional(c)(iv) State a !unctionalarran#ement o! the apparatusarran#ement o! the apparatus
%ith labelle" "ia#ram(1)%ith labelle" "ia#ram(1)
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1.1. -he apparatus is set up as sho%n in the-he apparatus is set up as sho%n in the"ia#ram."ia#ram.
+.+. -he so!t iron core is coile" %ith-he so!t iron core is coile" %ith 1* turns1* turnso! copper %ire.o! copper %ire.
3.3. Po%er supply is s%itche" onPo%er supply is s%itche" on..
.. -he-he number o! pins attracte"number o! pins attracte" to theto theelectroma#net iselectroma#net is recor"e"recor"e"..
( c )(v) State the metho" o! controllin#( c )(v) State the metho" o! controllin#the manipulate" variable an" respon"in#the manipulate" variable an" respon"in#
variable.variable.
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(c)(v) 'epeat the e/periment at least (c)(v) 'epeat the e/periment at least timesv(1) timesv(1)
-he e/periment is repeate" by usin#-he e/periment is repeate" by usin#
12 +* +2 an" 3* turns12 +* +2 an" 3* turnso! coppero! copper%ire.%ire.
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(vi) -abulate the "ata(1)(vi) -abulate the "ata(1)
umber o! turns o!umber o! turns o!%ire%ire
umber o! pinsumber o! pinsattracte"attracte"
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(vii)State ho% "ata %ill be(vii)State ho% "ata %ill beanalyse"(1)analyse"(1)
Plot a #raph o! chan#e in temperaturePlot a #raph o! chan#e in temperaturea#ainst current.a#ainst current.
umber o!*
umber o! pins