Đăng ký Đăng nhập
Trang chủ Giáo dục - Đào tạo Trung học cơ sở Lớp 6 đề khảo sát chất lượng vật lí 8...

Tài liệu đề khảo sát chất lượng vật lí 8

.DOC
5
78
130

Mô tả:

Trêng thcs............................. PhiÕu kh¶o s¸t chÊt lîng Hä vµ tªn: ......................................... M«n : VËt lÝ 6 Líp: 8 ........ N¨m häc: 2012 - 2013. §Ò A Thêi gian: 30 phót (kh«ng kÓ giao ®Ò) §iÓm Ch÷ ký gi¸m kh¶o Ch÷ kÝ CB coi thi I. PhÇn tr¾c nghiÖm: (3 ®iÓm) H·y khoanh trßn ®¸p ¸n mµ em cho lµ ®óng trong c¸c c©u sau: C©u1. Lùc cã thÓ g©y ra nh÷ng t¸c dông nµo díi ®©y ? A. ChØ cã thÓ lµm cho vËt ®ang ®øng yªn ph¶i chuyÓn ®éng. B. ChØ cã thÓ lµm cho vËt ®ang chuyÓn ®éng ph¶i dõng l¹i . C. ChØ cã thÓ lµm cho vËt biÕn d¹ng . D. Cã thÓ g©y ra tÊt c¶ c¸c t¸c dông nªu trªn . C©u 2. Hai lùc c©n b»ng cã ®Æc ®iÓm nµo díi ®©y. A. Cïng ph¬ng, cïng chiÒu, m¹nh nh nhau . B. Cïng ph¬ng, cïng chiÒu, m¹nh kh¸c nhau . C. Cïng ph¬ng, ngîc chiÒu, m¹nh nh nhau . D. Cïng ph¬ng, kh¸c chiÒu, m¹nh nh nhau . C©u 3. Lùc nµo sau ®©y kh«ng ph¶i lµ träng lùc ? A. Lùc lµm cho níc ma r¬i xuèng . B. Lùc t¸c dông lªn mét vËt nÆng treo vµo lß xo lµm cho lß xo d·n ra . C. Lùc t¸c dông vµo viªn phÊn khi ta th¶ viªn phÊn r¬i . D. Lùc nam ch©m t¸c dông vµo hßn bi s¾t . C©u 4. Khi mét qu¶ bãng ®Ëp vµo bøc têng th× lùc bøc têng t¸c dông lªn qu¶ bãng sÏ g©y ra kÕt qu¶ g×? H·y chän c©u ®óng? A. ChØ lµm biÕn ®æi chuyÓn ®éng cña qu¶ bãng. B. ChØ lµm biÕn d¹ng qu¶ bãng C. Kh«ng lµm biÕn d¹ng còng kh«ng lµm biÕn ®æi chuyÓn ®éng cña qu¶ bãng D. Võa lµm biÕn d¹ng võa lµm biÕn ®æi chuyÓn ®éng cña qu¶ bãng. C©u5. H·y x¸c ®Þnh c©u kÕt luËn ®óng vÒ ph¬ng vµ chiÒu cña träng lùc cña mét vËt: A.Träng lùc cã ph¬ng n»m ngang, chiÒu tõ trªn xuèng B. Träng lùc cã ph¬ng n»m ngang, chiÒu tõ díi lªn C. Träng lùc cã ph¬ng th¼ng ®øng, chiÒu tõ díi lªn D. Träng lùc cã ph¬ng th¼ng ®øng, chiÒu tõ trªn xuèng C©u 6. H·y tÝnh 400g øng víi bao nhiªu Niut¬n. A. 0,4N B. 40 N C. 400N D. 4N II. PhÇn tù luËn (7 ®iÓm) C©u 1.(3 ®iÓm) Treo 1 vËt nÆng vµo 1 lß xo lµm cho lß xo d·n ra. H·y cho biÕt: VËt t¸c dông vµo lß xo 1 lùc g×? T¹i sao khi treo vËt vµo lß xo, vËt kh«ng bÞ r¬i xuèng ®Êt, khi ®ã cã cÆp lùc nµo c©n b»ng kh«ng? §ã lµ nh÷ng lùc nµo? ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... C©u 2: (1,5 ®iÓm). ThÕ nµo lµ träng lùc? Em h·y cho 2 vÝ dô vÒ träng lùc. ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... C©u 3: (3 ®iÓm) H¶y cho biÕt träng lîng cña c¸c vËt sau: a. Mét qu¶ c©n cã khèi lîng 5 kg b. Mét h¹t g¹o cã khèi lîng 1,5 mg c. Mét « t« cã khèi lîng 8 tÊn ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... Trêng thcs............................. PhiÕu kh¶o s¸t chÊt lîng Hä vµ tªn: ......................................... M«n : VËt lÝ 6 Líp: 8 ........ N¨m häc: 2012 - 2013. §Ò B Thêi gian: 30 phót (kh«ng kÓ giao ®Ò) §iÓm Ch÷ ký gi¸m kh¶o Ch÷ kÝ CB coi thi I. PhÇn tr¾c nghiÖm: (3 ®iÓm) H·y khoanh trßn ®¸p ¸n mµ em cho lµ ®óng trong c¸c c©u sau: C©u 1. Lùc nµo trong c¸c lùc díi ®©y lµ lùc ®Èy? A. Lùc mµ cÇn cÈu ®· ph¶i t¸c dông vµo thïng hµng ®Ó n©ng thïng hµng lªn. B. Lùc mµ giã t¸c dông vµo thuyÒn buåm. C. Lùc mµ nam ch©m t¸c dông lªn vËt b»ng s¾t. D. Lùc mµ ®Çu tµu t¸c dông lµm cho c¸c toa tµu chuyÓn ®éng C©u 2. Khi b¾n cung, lùc do d©y cung t¸c dông lµm cho mòi tªn bay vót ra xa lµ lùc g×? A. Lùc hót. B. Lùc Ðp. C. Lùc kÐo. D. Lùc ®Èy. C©u 3. Trong c¸c c©u sau, c©u nµo lµ kÕt luËn ®óng vÒ kh¸i niÖm lùc? A. Lùc lµ t¸c dông do con ngêi t¹o ra. B. Lùc lµ t¸c dông cña vËt nµy lªn vËt kh¸c. C. Lùc lµ t¸c dông do lß xo sinh ra. D. Lùc lµ t¸c dông do nam ch©m sinh ra. C©u 4. Hai lùc nh thÕ nµo ®îc gäi lµ hai lùc c©n b»ng? A. Hai lùc ®ã cïng ph¬ng, ngîc chiÒu. B. Hai lùc ®ã m¹nh b»ng nhau, cïng ph¬ng, ngîc chiÒu C. ChØ cã hai lùc ®ã t¸c dông vµo cïng mét vËt mµ vËt vÉn ®øng yªn. D. Hai lùc ®ã m¹nh b»ng nhau. C©u 5. Mét häc sinh ®¸ vµo mét qu¶ bãng cao su ®ang n»m yªn trªn mÆt ®Êt. §iÒu g× sÏ x¶y ra sau ®ã? A. Qu¶ bãng chØ biÕn ®æi chuyÓn ®éng. B. Qu¶ bãng chØ biÕn d¹ng. C. Qu¶ bãng võa biÕn ®æi chuyÓn ®éng võa biÕn d¹ng. D. Qu¶ bãng vÉn ®øng yªn C©u 6. H·y tÝnh 200g øng víi bao nhiªu Niut¬n. A. 200N B. 20 N C. 0,2N D. 2N II. PhÇn tù luËn (7 ®iÓm) C©u 1. (2 ®iÓm) Träng lùc lµ g×? Em h·y cho 2 vÝ dô vÒ träng lùc. ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... C©u 2. (3 ®iÓm) vTreo mét vËt b»ng sîi d©y m·nh, vËt ®øng yªn. Em h·y cho biÕt cã nh÷ng lùc nµo t¸c dông lªn vËt? Lùc ®ã cã ph¬ng vµ chiÒu nh thÕ nµo? ận dụng ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... C©u 3. (3 ®iÓm) H¶y cho biÕt träng lîng cña c¸c vËt sau: a. Mét qu¶ c©n cã khèi lîng 3 kg b. Mét h¹t b¾p cã khèi lîng 2,5 mg c. Mét cÇn cÈu cã khèi lîng 12 tÊn. ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ...................................................................................................................................................................................................................... . ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ....................................................................................................................................................................................................................... ®¸p ¸n ®Ò kh¶o s¸t chÊt lîng ®Ò a I. phÇn tr¾c nghiÖm: Mçi c©u tr¶ lêi ®óng ®¹t 0,5 ®iÓm C©u 1 2 3 4 §¸p ¸n D C B A 5 C 6 D ii.phÇn tù luËn: C©u 1. (2,5 ®iÓm) C©u 2. (1,5 ®iÓm) a. Lực kéo . b. Có, lực kéo . c. Vật không bị rơi xuống đất vì nó đã cân bằng với lực kéo của lò xo. Có 1 cặp lực cân bằng tác dụng lên vật đó là lực hút của Trái Đất và lực kéo của lò xo. ®¸p ¸n ®Ò kh¶o s¸t chÊt lîng ®Ò b I. phÇn tr¾c nghiÖm: Mçi c©u tr¶ lêi ®óng ®¹t 0,5 ®iÓm C©u 1 2 3 4 §¸p ¸n C D B C ii.phÇn tù luËn: 5 A 6 A C©u 1. (2,5 ®iÓm) - Gåm hai lùc t¸c dông lªn cuèn s¸ch: Träng lùc vµ lùc n©ng cña mÆt bµn. - BiÓu diÔn lùc ®óng nh h×nh vÏ (1,5 ®) (1®) A N ///////////////// C©u 2. (1,5 ®) P Khi gâ m¹nh ®u«i c¸n bóa xuèng ®Êt, c¸n bóa ®ét ngét bÞ dõng l¹i, nhng ®Çu bóa vÉn tiÕp tôc chuyÓn ®éng xuèng phÝa díi do cã qu¸n tÝnh, nªn ®Çu bóa ngËp chÆt vµo c¸n bóa. C©u 3: Tãm t¾t: m= 60kg; S1 = 200cm2 = 0,02m2; S2=2.S1= 0,04m2 P1=? P2=? (0,5 ®) Gi¶i: ¸p lùc cña ngêi ®ã lªn sµn nhµ lµ: F= 10.m = 10.60 = 600 (N) (0,5 ®) ¸p suÊt cña ngêi ®ã khi ®øng 1 ch©n lµ: P1 = F/ S1 = 600/0,02 = 30 000 (Pa) (1 ®) ¸p suÊt cña ngêi ®ã khi ®øng 2 ch©n lµ: P2 = F/ S2 = 600/0,04 = 15 000 (Pa) (1 ®) §¸p sè:
- Xem thêm -

Tài liệu liên quan