海南省东方市2023-2024学年八年级物理第一学期期末考试试题含解析

2023-2024

1.$É$M#ïmwm

3.W«M.

-sÆ&®CW1.5#,&301S,45#)

i.'bfô&a^#5crMW,sowa^fiü^^éog»,

><)

A.»»B.w»,

c.»»D.ww,

2.MTO108km/h;fô:të±8S&*ftl»£j,lsPTgS40m;1min

fgns5km.thS'Èii']Mô<j^/b

A.B.»Ê&K«*c.D.a#i£M-WÀ

A.

B.LMftm,wmts^b

C.lkg/m3

D.8:1

4.M^,

A.B.C.D.

5.MT^ôùk^môü^

6.)

A.IKfflWiEïr,B.jÜttm

c.&A&^jEïz\D.

<E«^&»3V.MOc,()

A.fofèHZkE^U:1B.EfelfiJgK2ÈlïïZtk^1:2

C.RiE&MJgRi2:1D.Ri<|fi^R2EMZHSA1:3

8.ow”

^“A^”Æfê^WâÙ()

A.B.Dfô^c.D.»

9.T?Üfà«W&Æ^æÆ()

A.WW*fô-fcS£j>j50cmB.A^jE25’C

c.5wD.-R»W^*^A20kg

10.^5a>”

A.

B.zWH7üfe>£.<

c.

D.

11.)

A.itâe^iâwwm,^J-T$,ê^wsT^T

B.Affi^ÆT

c.

12.(

Fi-5NF;=5N

Fi-5N

Fi=5N

D.F1=5N

>F2-8N

13.T^W»«MOiE»

A.RMM,“i$WWa—

B.1W1,ft&W»----

c.HZV>&Éb

D.Mimas,ttiiiiHiw—

14.RA10cm$05cm,ffiR-Û=500gft

m^=250g,()

A.1:4B.1:2C.1:1D.4:1

15.SA,MSA

A.B.Rm®WJ»#±

c.D.

16.W$WA»W,T£iJœiEtâfô>()

A.M^±ôù

B.ffmfôffmitlfi

c.WÔW*ifô»fô

D.4âÆJ^fë±ô<j^>is^jôù

17.^S'M^WW“36V18W”w,fêfczjmjEMlftlOminoÜllJ^aÆîÉW

()

A.1.08X104JB.300J

C.3.888xlO5.ID.1.05xl04J

18.»MR/MT?Ê()

A.B.c.D.n]W«

19.-ü»Ml®A15cm,40cm20cm

()

A.B.«/JsW'£'b

c.M^'bD.«zb,<Eg»

20.<)

A.-Ü#TKIR]«B.c.-<fÉm±ir^D.

21.()

A.B.

c.D.

22.ê4f$â<j<WW^fîaëâ<J^+±^^TM/b^^â<j>()

SWOQÜÏÏW

23.ÊMiOiJTMO,«XMWzktôfeKW*^.

T?!mïiiEM>()

A.W»flÆîmMMB.MM

c.MMD.MM

24.()

A.

B.a^nJrüJWMêÈW^^^K

c.

25.foO-$AMWLA&ÆATM»,<-0MMA.

SfôlAWl^®Ufc&85t>&W,êW,£jm£.ÜLTilWfflli

A.

B.

c.

D.^A^ÆAlOcm,ftWOWîlM,AMSlM^ÔWMAA20cm

26.Tjijmt,()

A.

B.

c.AraftWîHfêWs,aâ>±^^feM»

D.KftT,mWltë»?

27.M0r^,

28.MO;,SS&WiWlgWOÜWABKtl

tA---

B------

A.^cAWmB.jE£,^A&Ü^

c.tëijïr.D.jE£.^/b&9^

29.^ï^ÿWf,()

A.A^AfâJ^^AAl'B]«Æ<ffiSMA

B.

c.A^?t?iMtt^»«^^OA

D.ffl^AM^-AA/b

30.iEfàfôœM()

A.PH^T,æmOfôOM

B.n^Æ&iww,stim^saw

c.AÆI&mèisœif,¥MJ9rtôM£$A

D.ÆfêM,AT^A^T^MêBÈÙM,

-,«$1#,«10®,20#)

31.“WM^,Xï»=A”+WH>bA,PHkêB#,^#WW^A,

f£T,

32.«W^n«2022W'ê-»#^.MÆktWSZ-,

Mo-^PAM^JÜKMHJJH,SW>ATftK^WZl'ë]â<J»,

__w____.^TOœ&o(^«“1#A”§£“M/b”)

33.WRIWJ«i§êB»âù«^ft^,^T^dM®o

»SXÔ<J#Æ»,?

(2)A¥^^^»W*Ô<JTA,»«±,/bB^ABÆWW^^A,

T*,IWriiÉEiÉ&^S(M)^SaTH^fêi^,#£■]£:

TF,I^W>È™Î^_____^£1$;»(W£#w-#iett)

35.®^±,O@MÆ««i±^______(&«“$t”“«”)

^tm-,éÈÆ^±uMRJr^wR)^iÿr®j»ww^.oam^ôü»

36.MM27gWegft,WÆ10cm\g/cm3,MMf

M_g,%5&%)kg/m3»

37.’c,ti«onw,*È(«“tr)&

JFXW&

...........................................................................................................................

353«373«3V-40..............-tl-42

38.W^lm3èÙ»^±W4t^zKJH>zKWMM.______,zklWMo(feKâù^Jî^o.9xio3kg/m3)

39.ara-»®,È»RT&,

?W#BÏ4srtjê3jÔWSM;o

40.cm,SZ.^Mi+W>°c,S,

41.Æ“MWa»’ut,M-WmiWW±,

OUiWMtë-iO;FO!te*OîOPFffi&±,OF.

(D^^?&O2V|Êj^ÿf,jWawFffi±<^iJ&Wt^OF,mm»Alt%»fcm

«|H)-Y®l*k

(2)^>it»iÉ«oF^iR]^[R]^ffi,6>£3finjm,sms»sorn*.

æj.

(3)MOc,^MYffiW)OA,ON%fâ&,AOlZA(W=45%B&

&fê±ZWB=30<’,ZNOC=45°,ZNOD=60°°WJAMMAO(&«u0B”,

OC”“OD”)

42.“^®»Wîaj8B8Btl0]^4tW^”»,»smns^o

(2)EhœnftB«M>’C,15minL(&«>UW’“0^

)

L

H,(«@10#,^2@,20#)

43.ra«i$130g,250mL,fiWHJ.

<Si>A^3O^/b^0tRiWnga^

44.WzK^+^zk.40min,7K

m25’C±#?lj45’C„

(iMt^ffe^âW-â:

3

(2)zKWW&*[e*=4.2xlOJ/(kg-°C)];

(3)^2K#M$O

FED—H50^ÆE&H220V

<AzK>50kg2000W

-,i&M(W1.5#,&30®,45#)

1,C

IW1»W,M8O.

mCe

2,C

5

[##rlfêigv=fô&mm-Wttfô.

t

[WJttâfô&Kv.=108km/h=108x—m/s=30m/s

3.6;

5,40m..,

'2=y-=—=40m/s;

t21s

s,5000/??__„,

WWMMv3=y=-yy~~83.3m/s.

t360s

ift&C.

3,D

rm?]A.z»mt*ffiw,Z^WJ&#,#AWM

B.ÈSitpm¥,Zx^w^w,iftB

3

C.ÈSMnT^l,^???i=4g0t,V^=4cm,MZ»W®

J'y?Z|fy

p,———=——1g/cm’=1x10’kg/m'

Vz4cm

D.ÈS^nT^,^/??^=8gBt,V,=lcm3.

PII=—-=8°=8g/cm3=8x103kg/m3

Vp1cm

W

Pv-pz,=8g/cm3Ilg/cm3=8I1

iftj&Do

4,C

5,C

[#tff]ftfôÿrJima,#4

0^<W^>/bîLM^ftMâtfëO^W.

[W]A,Élft»Èt=|£&,*T4sÛ»OTWR,MTÿfW

M,

B>AzK4’IS^±MMW»zk4'^ltA^^4’Bt,W&fâft,Wft^iŒ&îÉât,âAiWOb^W^fàW,

«1OW&J^B^OrT,MMW;

c>Affi±iW‘W”,*ÈT»OH&m^-ê-gjt;

D.È^wMrê»,^MWfèMaHiiw

E«,M^OHS

Mc.

^â:

Æi¥;b«,S^m,B>¥

M^W^âù^W^âù;zWfë»l°]££Æmr:&T3Of'

WW^,

6>C

[Wl?]Ég/bW»;OWli,«WM;^M«IE^>

AWM.^Mc.

7>B

(WlA.jW*feffi«itO9afei!MfeÆ,

«9V,£-±?F£JH,*J£«^$^3V,BP^Wffeæ^v,$&&&

Eèi®Efc>3ÆO,JSIJR,^s.^)

U2=U-Ut=9V-3V=6V

ÆÜRiR2ELæ:tt^

£L-2X=1

U2~6V"2

A^;

BCD.WKifc^K2ttttt>g1:1,KlEfelfi-îg

tà

A-_L-£L=2X1

-=-

R2~^2U26V2

/

ÆfcBjEfà,CDféig

i&iâBo

8,B

qâ|£Wfe®S+ÔÜ“g

(gp&Ü),

9.C

[WWlA.20cm,WSW*m=£HS20cm*-»,Æ26cm

B.AWjEWfi^^37“C£^,^B«^®B;

C.5w,MC^-ê-JO;

D.2kg,

W&Co

10.B

[WflrlâMfifiJt,A^o

^.M,^BJE^^MO

11.D

[WW]A.Z^IJ-T^,êfi'WST^T,&A

B.ÀP0/FXT,>WW,

D.Mftlilk±fôioama®2lc££^^T4t«4t,

12.B

[WW]A.AIRJ^R.M-OU,MW4-A>WfflM^W±,»>YWA,

B.AlRlffiS.aië|-OU,iSWffli£|s)-tiW±,

c.MM,S+ffi'bAA'bW,^>¥WA,

D.AtnjfflR.WfflÆRI-W^±,

Ü;

r&iâBo

13,C

[WW]OOÈOWM»M

[â0»l

14,A

[WWl?,ZÆiEAWlftMZttA

n-n-/?7|l'-50°g■25Qg-1/1

'Vp^2.(10cm)3(5cm)3

&A#M>,BCDWO.

A.

15,C

[Wtff]MW:aîntÊ^|â|M^lR]#?!lWMS^Ma»±^^T«SMâ<J^.ÈX,

itfdfcc.

«:rnsms».

16,B

[WW]AC.âA«Æ»|p]Htrâ<J^$±0t,3WblW*.

is^üÉKl,aACféiM;

BD.w«±we^,«Æ&±i$moÆTOÆ£4t^±æb^BIE^,D^O

i&J&Bo

17,B

[WW]

g=/2^=(0.5A)2x2Qxl0x60s=300J

MBo

18,A

[WW]JH'J

i&Aft-ê-M,BCD»!!.

t&ÆAo

19.A

ÜWW>âu>2f0t,f<v<2f,

â2f>U>f0t,v>2f,tôfêR.

u<f,<££.

^fô/bflt,IM*.M».

^^15cm,«MOMüM40cm20cm#KjW|g«£,W»fÆâtt^îS

<h,TO8K*.».

®AjEe.

ÆB»:w^b,&

tiJ^b,ftltt».<^±tfrbL3g/b,HtOWMUS.»«

20>D

[W^]A.-WzkiRj»,zKKfôSÆ^»r$ft,&A^®£;

B.Ml-tfSj&fc,<Wiâ^j,^B/F-ê-SiÈ;

c.-eÉm±wx,âMfô&aa^uœt,ac^®^;

D.SfcDfti^Oto

iftji&D»

21.C

[wiA.ws^+^ænë^:ftAiEfà,

B.£nMRWZ»M*,#BÎE

D.&DjEïfê,

W&Co

22.B

[W1A.$Èflè±$!lW«>

ïftiâBo

23,A

[wi^msȜ^THs,

OA.

[Æffltl

24,B

(WMJA.&A^;

B.&BjEfà;

D./WbWÛ^MK,&DOL

fôi&Bo

25,C

[^i^u>2fBt,

$|fflTâu>2fitf,üæfc&fêU,^âù^JM

sm.

M^lWêMlOcm,m>A^20cm^,

ABDiEïfê,i&Cfêi£.

«C.

26,D

[WlA.BlWMÔ<J|W|WlU®i±ia^»WjE,fôAW-ê-JSB;

B.i^BW^®^;

c.ÀPHft®ii=féWé,ÆÈ^±^^ÔÙ«,

D.my,MAÆMm±^â<]^,

r&ÆDo

r^m

27,B

[WM]A.fiOÆW.BPWAOîlfêtt*.SfcA^.

ÜEBM

c.MOL

IXjfcffl^f^ÉKJlW>,MWÔÜiftSSWO,MOL

MB.

28.B

[#tfr]MÜLtffiâù.igMWBUïm,S&OJ

TffiWiW±,MkOJAÔWS,ArnttWiffiliLS£blft>W.

[WMiJE^PA

MB.

29.D

[WMlA.AAZlWÆAWSlA,WtëÈftfÉM#TZIWffi5ftfflW5IA*n#A,MIEfà,A^f

#»;

B.W^APHiE^j,M<W,MiEfô,B^Wf;

c.A&m»Mœwîu,zwmMim,

D.fflây€«#TA'jsD^O.

MD.

30.A

[WM]A.PH%T,«MM.SèAjE^A^.

B.^iTJFW^lWfr,WJ^3iârtâ<JW^ÆaMS«±«.WSc#>5W^ffiÈù«.m^B

c.miSYMÆM*.YM^AfôjOi,^mA<bT£.MOL

D.^ri^ÆBtW.ATâÊA&WMêB».Ê

te¥^!EM<êBÔ<JMM.SitfcMD^.

-.±M«MO®,20#)

31.

[^M]u^m^,AWHA”‘EW-A^W^-AA,

«A-A“A”'ÈMOT^#aWA^AS09WAfêft,ÆAJéffim®±

*^AWâü»>^,BPMffiAW“A”;“A”>#APÜ“A”,AÆiâ^HWMW

BP¥ffiWOb

32,

[WM][i][2]iW£^MWWWffiæj$®4',Sd'TOffiOfêm.A

TOWW.

33,1mm3.30cm^WJS

[WMJ(l)[l][2]fflT®^&ÜM!l®R3i!!l^W-feS,MÆRWAfê+WlOT'/J^,0.1cm,BP1mm,

2.00cmM^F,5.30cm^,

£=5.30cm-2.00cm=3.30cm

(2)[3][4][5]=&etii^j£:wi,w»wwwæ.

34,

[WM1[ItfWWEtf,

35,?s

[WM]iiismwwtmojMiæw.

[2]j&<æjfëmWM^>R^n/rSiJWMW^,

36,2.712.75Ï13.52.7X103

[WM][UÈM^W

[2]WS^JX.M^^i2.7£o

[3][4]^®^^&Jé-¥,13.5g,2.7xl0-'kg/m\

37,37.8«?Hgtg

[WM][i]W^i+^Æ<^0.rc,M«3J37.8’C»

38,900kg0.9m3

[WM][1]WsAlm-’m,

m=pV=0.9x103kg/m3xlm3=900kg

ÈfeMtzfc,SbKâ^Jl^900kg»

V=—=900kg9m.,

p1x10kg/m’

0.9m-’o

39.010

0;

WZÆ0-2SftW!:s=S2-s/=20m-0m=20m,UljZ,fôj&£:

40.2.60-22307.5

[W1[IJÈS^ftbWft£<Èn.00cm^,3.60cmM?F,

L=3.60cm-1.00cm=2.60cm

rafflz^^æi+^M&rc,MfàTMSMA.Wfë^20’ClUT^2>b/bfê^,ifc^lfc^-22'Co

[3]Spg+^W/b«â+,Wftf5^6mZ|B|âfi|ÈJf5,<^5min,30s;

M7.5s,5