GRADE 11 PHYSICAL SCIENCES _ - Pearson High School
GRADE 11 PHYSICAL SCIENCES _ - Pearson High School
GRADE 11 PHYSICAL SCIENCES _ - Pearson High School
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EASTERN CAPE<br />
<strong>GRADE</strong> <strong>11</strong><br />
<strong>PHYSICAL</strong> <strong>SCIENCES</strong> _ FIRST PAPER<br />
NOVEMBER 2OOS<br />
150<br />
ilHiltitiltfftillliltil<br />
Th s qlestion paperconsisls ofl4pages a<br />
and ai answer
A.sw€rths sect on on th€ atached ANSWER SHEET.<br />
QUESTION 1: ONE-WORD ITEMS<br />
Give ONE word/rem lor EACH of the tot owing d€scr pr ons Wr te only lhe word/rerm nen<br />
ro the queston nuhber (1 I 1.5)on the anached ANSWER SHEET<br />
1.1 The type of semiconductorrhar forms wtren s icon s dop6d wilh<br />
1 2 The mt o of rhe f.rce ot fricuon to th€ norma force<br />
1 3 Th€ ab rty oflh€ tens oflhe eye to change its foca length.<br />
1.4 Th€ raw used to del€rm ne the d reclion ofthe nduced cur.enrwhen a<br />
magnet is moved reialive ro a coi.<br />
1.5 A bu d-up of eteolrc charge on lh€ slrface of an objecr<br />
OUESTION 2; FALSE ITEi,IS<br />
(r)<br />
(1)<br />
(1)<br />
(1)<br />
(1)<br />
tst<br />
'rhe folowing starefientsgven in QUEST|ONS2I to 25 are FALSE. Wrtelhe@red<br />
slatem€nr next to the question number(21 2.5)on rhe aflached ANSWER SltEEt<br />
2 1 An exampt€ of a cass 3 rever is wh€n you push a wheetbarow I ted with<br />
2 2 N€lrton s Second Lawdelnes lhe retarionship behreen forDe, mass and<br />
veloc ly ot an objecr.<br />
23<br />
You hear dogs bart c earer.( n ght due lo lhe resonance ol sound waves<br />
The vonage ncreases and the charce dedease wh e! capacitor<br />
nduc€d durins electromaqnet c nducton<br />
(2)<br />
(2)<br />
t2)<br />
t2)<br />
(2)<br />
I10l
pHYsrcAL sc'ENcES:lllSMlgB<br />
qUESTION 3: MULIIPLE-CHOICE OUESTIONS<br />
- o'dr!cii4d' ro e io'rotr qo 6Jon Ldl<br />
'.po<br />
",,"'. ." "" -1. ore.. " . "n5^a, . hoo.e'\F b'.rc,^- a d iz''c o.<br />
*-'r:" ;."- .';;:,; ij e, r".""<br />
: :.hed ANSWEF SHEET ".r."<br />
3 1 Ju rus stands on a bathroom scale ii a ln H s we qhl s 637 N The rcadinq<br />
on thescaewil be 637 N<br />
A onlv iflhe lilt is a@e eratng upwards<br />
B only il lhe lift accelerat€ s d ownward s<br />
c fthe ln moves downwads wi|r a conslanl velocitv or rit stands stll<br />
D only if lhe Lift stands st ll<br />
,- lheo" r""o.r'ro "o'd<br />
-<br />
;"i^,1;<br />
"<br />
"","d , oouo ed 'h' 'o1P<br />
od<br />
^p' ts' oo d r rhc !dno'<br />
D '/,F<br />
tni h oNL or lnc roro^rs q do<br />
;'::;;",";;;;;.<br />
di"ran.e d from th€ Po ntcharge<br />
" "; -.'e'd!ou" o"pon h"{" nd'e<br />
(2)
3.4 Which oTlhe lolowhg sr.<br />
A The €sistance ofa pi€ce ofoatium decrcases as<br />
oI n oh.om€ w @ des€s66s as the<br />
ol si icon decreases as the t6mp66lue<br />
D<br />
As lhc "lere-ro'atAhohoatsup,<br />
the re\sEn@ dFcEaB€)<br />
aslronauls ar6 do ng a spacewalk outs de a sp.eh p. oneastrcnaut<br />
that the olher one is rng ng a bett, but €nnot hear it. Thjs means thal<br />
t2)<br />
B<br />
qhl,a\es -c- lEvelr-rough. !<br />
sound {aves can rove Im<br />
'qh<br />
a €cu-n od ^ol, qhtwave)<br />
botli lght and sound waves can move through s vacuum.<br />
neith6r ight norsound waves.an move thbugh a vacuum.<br />
\2)<br />
<strong>11</strong>0l
INSTRI]CTIONS AND INFORMATION<br />
1 Answe.SECTON B ntheANSWER BOOK.<br />
2 The romu ae and subsltulions musl be shown n ALL ca cu atons<br />
3 Round offyouranswers ro TWO decifratpaces<br />
4 Sbnea.hqueslion on a NEW PAGE<br />
A m n busrax lrave s at 30 m sr When the drv€r sees a Aroup ofieahers<br />
crossnglheslrcel he mnedlaleyappleslhebEkesandbrnqsthennibuslax<br />
lo aslop n 7.5s The frassollhe minbus laxiand the passengeEis 3 600 kg<br />
4.1 Ca cu ale llre force lhat srequned lo brlng llre mnbus lax to aslop (7)<br />
42 Trre rarc€ thatyou ftlculated nOUESTON4I sthemaxmumforcelhat<br />
can be app ed by lhe takes. Th€ number or passengec is increased so<br />
thar the tola mass oJ the m n bus lax and lhe passenceG s iow c 000 k9<br />
Us n0lhs lnfomalon slate how lh€ fol owing w I be nfluenced:<br />
(Use on y INCREASES DECREASESoT REMAINS THESAIME as your<br />
,4 21 The tme taken to stop the mm bus tax<br />
4 22 The naoiiludeorlh€ acceeralon.<br />
4 2 3 The sloppinq d slance oflhe min bus laxi<br />
{r)<br />
ta2)<br />
\2)<br />
c3 By ref€dng Io your answers n OUEST ON 4 2. what advce wou d you<br />
livelo mnibus t:x dnvers conc€rnng lh€ nunb€r or passengeG and<br />
safety Gv€ a reason loryouradvce (2)<br />
<strong>11</strong>5t
T<br />
QUESTION5<br />
And lo, his sisterNoniand th6ir baby sister. Zuki, play on u seesaw in the psrk.<br />
And les mass is 60 kg, Nomi's mass is40 kg whit€Zukis ma$ is 9 kg. Consider<br />
lhe fol owing d aqEfr and answer the quest ons that tottow:<br />
Nomisils 2.5 h iiom the fulcrum (pivo!), white And t€ sir6 2 m fiom the<br />
5.1 D€lorminelheweights oleach ofAnd le, Nom and Zuki.<br />
5 2 Use calculalions lo ndlGte in whal dtreclion th6 seesaw wilt tum white<br />
Aidie and Nomisiton ll<br />
5.3 Howrartron lhetu crum and on whose sde (AidjLes o. Nomis)musrzuki<br />
sit to balan.e th. s..i.#<br />
(3)<br />
(4)<br />
(4)<br />
<strong>11</strong><strong>11</strong><br />
\<br />
..r s<br />
\
During a polce invesli$lion inloa €r acdident. lhe forens c unit rcconslructs the<br />
accdent carA, mass I 300 k! col des head{n with cr B frass 1 600 kg. which<br />
is lEverLng in the opposte direclion as shown in lhe sk€lch. ourng lhe colls on.<br />
the cars connecl and move logether as a combinalon and eventually @me lo a<br />
.rd 0..'. Tc.9.phor.'6 .loi..ol d ^oL<br />
nolhe.o'io' o..'<br />
E<br />
9.- "bo,e<br />
dnd o_ lhF 9rdoL .odo lhF rolo{i 0<br />
f.arA belore the collson.<br />
6 2 D€lerm ne th€ ve ocly olcarA mmed ately aft€r th€ co lision<br />
6 3 calculare rhe vel.c ly of€r a ju5Lbefore Llrc collelon<br />
6.4 NameTHREEsafety measurcslhalca mafufaclureF use nmodem €rclo<br />
make it safs for lh€ passengeG n the €r durno a col s on ike th s<br />
6 5 Which one olyod eiswers n OUESTION 64 s based on NeMon s FiEt<br />
(3)<br />
12)<br />
(6)<br />
(3)<br />
(2)<br />
r5t
i the dialrams berou A B and C reprerenL€l€mentsrhaL.anbe.onducror\,s€m<br />
Ihe conduclor (Wite on yA, B or c). Gveare.son<br />
ways lo ncrease the conductvly ola semi-conductor<br />
dev ce nwhdh s€mi conductors :re !q..1<br />
(2)<br />
t2t<br />
(1)<br />
t5t
Dr Murrer. an ootom€irist l€sls p€op es v slon:nd fnds o!l whetlrer lhev have<br />
0,"0i"., *fi ri'" t<br />
"<br />
g,t sh€ (h€n prcs.rb€s s asses n od€r lo mpovo v slon<br />
.lennv looelh€rwlh rrerdauqlr(er, Helen .nd hermolher, Aunlv Balbara decde<br />
i" ui,.ri.,-** t""t",t wb' Nruler .reinvtels Dr Mu erlhar sh€ enrDvs<br />
"""'""" " "'., oaa op.rb I rooao<br />
",,",1* " ""po'b"<br />
,"nF ad0 ".<br />
tsp cn who is stl al s.hoo 1€ s Dr Muler lhat she can see c earv when h€r<br />
t'.r,erwrtesontneoord butstruggesloreadkomhertextbookvrhenshe<br />
*"r", ir," *p* **. "<br />
.r'tp pa n ii hcr ev-cs which lhen d sappears when<br />
she rro ds the nagaz ne fu.lh€r kon h€r eves<br />
3 1 Name lhe mosi probable eve d-cfecls that EAoH oflhe lhree fam v<br />
3 2 Describe lhe poss bl€.auses of EACH ofthe eve prob ems<br />
33 Make separale sket.hes to nd cate e..h ofthe la lo$ nq:<br />
3 31 The eye deietl knowi as shorl sqhtedness<br />
3 3.2 Howlh€ defecl n ouEsl oN 3 3 1 can be conected bv us ng !<br />
(3)<br />
(21<br />
l14l<br />
udvthelvpe of magesthat 1'anform Shetlr€i<br />
"-.".g..,".m"'e<br />
Draw ar accurale ray di:lra<br />
91 I Thefoca lenqlh.Ilhe<br />
91.2 The he ghl oflhe mage<br />
9 2 C..u at€ the magnir..iion<br />
I 3 Name THREE propenes of lh-"imao€ f theoble'l s p:'e'r 30 nmirom<br />
1r)<br />
(21<br />
(3)<br />
t<strong>11</strong>l
FHYSTCAL scrENcEs - FrESl tAPl!<br />
,,* ris ." r<br />
After lhe An Frcnc€ Fl€ht447 plene wenl m ssrnc overthe Ar<br />
'nr '<br />
Ocean on l<br />
:-;; i;; ;"ii""" '-.""""."' ' r'-. o d" e eD'o,o ri o I e ird Ldo'<br />
ofIh€ plane andthe so-caled bLack box<br />
Th€submarnedivedloadeplholl Or5mbelowthesurfaceortheocean Apulse<br />
*ji !""ii.. rn" i,t-.i"a. soNAR nstruh€nrs and it €flecr€d ofi rhe wrcckae€<br />
,ir-r,-" o.n* o rt<br />
"<br />
*" The pu s€ relumed 4 30 s aner I<br />
il::;J,l;:i:;;'.li;:;;:;"r rn"ii.r"i r" rr,"<br />
"** " I s-:z ' "'<br />
'10I What s |re d stance from the submanne b lhe wreckaqe olihe plane (4)<br />
lO 2 Whalreihe d€pih ol rre o.ean alrhatspe' l'' ponL)<br />
(r)<br />
t5l<br />
Cons derthe lolow ng q€ph concem nq the speed ol sound n dLfferent hediums:<br />
speed ofsou.d in difier€nt medilms<br />
llj::99<br />
<strong>11</strong>2<br />
ln whch phase does solnd lravellhe fastest<br />
c ve an expLanauon lor your answer n QUESaloN <strong>11</strong> 1<br />
Thc varde oflhe sDeed ol sound n seawater is the va ue al0 "c Lf (<br />
;e lound thal tlre t€mperalur€ ofthe seawlter s 17'C how wDuld lh€<br />
spe€d ol sound in lhe seawaler change<br />
I'h..SE I'OM INCREAS€S DECREASES' STAYS THE SAME) (2)<br />
0)<br />
L2)<br />
t<br />
.t
1l 4 Breflyerpa'nyour.ho(e nQUESTIONIl J<br />
d. oo. rountai .Jo00aaoor.>ed e\et -ruy,1ea.L,e><br />
the spe.d ofsolnd. She does not oblain the sam€ va ue as n the<br />
above table Whtch of rhe to lowing vatues is rhe mosl prcbabLe that she<br />
rr 6 Bref y €lparn your.horce nouESToN Ir.5.<br />
12)<br />
<strong>11</strong>0l<br />
QUESTION 12<br />
Asmal,cofducringsphere,X wirhachargeol+2xlq6Candwlhanunk.ownfia<br />
m, is suspended by an inelaslic thread ofn6gtgib e mass wh ch is lied to poinl p<br />
AnorhF .n:r o-oudi a"ohe€.v ond '.quo.Fo.tand,wlhac-arqed6r<br />
tOo<br />
is moved low.rds ) uni ihetrcenlros are l2o mm ap:rl<br />
121 ca cu at6 th€ haqnilud€ and d re6t on ol the e ectrosialic force thal<br />
sph€re Y exerts oi sphere X<br />
12.2 SphereY smovedunt i ouches sphere x and tisth6nmovedbackto<br />
itsorqinalDosilion<br />
Calcurate lhe new ch.rge on each sphere afrerthey touched.<br />
12.3 ln a thundeBrorm, chaQ€s buid up in ctouds due lo different hovemenrs<br />
ola r,Gindbps and .e When tho polent at difference behre€n a<br />
coliecton ol pos live charges and negetive charces becomes big enough,<br />
a ighhing fash occurs<br />
Name TFIREE pr€caul ons thal one can lake in oder to orolect onesetf<br />
I
QUEST|Oi{ t3<br />
ln an attempl tov€iryohm s Law, a gEup of leamers nvest qate ihe<br />
r€lationship belween pot€nt al difforence and eleclnc cunent Th€yare<br />
Drcvid€d with lh€ to lowin€ apparalus lr set up the circuit:<br />
. Rheostal (Efiable €si6tanc€)<br />
t ConnoclinS wires<br />
t Batlery/Power so!rce<br />
Th€ Gble bd@ shss the res! ls obtained du ng lh€ investigalion<br />
016 0,32<br />
3,0<br />
7.A<br />
13.1 DGw a circull dag€m olthe coiiectset-up oflh6 appa.atus forths<br />
13.2 Fom u lal€ a n investig alive q u€stion for lhe above nvestsalion<br />
133 Whl.n vadable musl be kepl @nslantdudng the above nv€stqaton<br />
13.4 O6w a g6ph of polent aldiflerence vetsus cunenl on the anached graPh<br />
paper. odwtheaxesand choosean app@p.iate scale Polandthen<br />
(3)<br />
(2)<br />
(r)<br />
(4)<br />
135<br />
13.6<br />
Fbd ths graph, w o down the malhematmlre allonship between<br />
polential dilferenc€ and cur€nt.<br />
Ma.t on your s€ph the poini x b€yond whch ohm s Law no onger<br />
O@s th; Gsistance INCREASE or DECREASE beyond this poi <br />
12)<br />
(1)<br />
(1)<br />
t14l
olJEsTtoN 14<br />
Acommonuseof transfomersrs ncel phonechargeFwhichopeGtebelween<br />
6V and l2V. Aleamer s given a lransfom€rthathas550tums onthe primary<br />
@ r ,nd 25 turns oi rhe secondary co r rrisDUaaed nroawa sodketof220v.<br />
141 what type oflransfomer s 9 ven to ihe leaher Give a reason ror your<br />
14.2 show bycalculalion ililcoud be possib e to use this lranslomd in acel-<br />
(3)<br />
(4)<br />
14.3 whar chanae must be made 10 lhe secondary durcntlo make lhe cuirent<br />
sulable for lse n cel 'phone chargeE (2)<br />
144 Nameandexplaintheprincipeonwhlch:lmnsformerworks. (3)<br />
<strong>11</strong>2l<br />
IOTAL: SECTION Br 125<br />
. GRANDTOTAI: 150