Kiểm tra Công nghệ 8 - Thời gian làm bài 45 phút - Trường THCS Bình Minh

 Tr­êng THCS b×nh MInh kiÓm tra c«ng nghÖ 8
 Thêi gian lµm bµi 45 phót
Hä vµ tªn: ......................................................Líp.............................................
Ngµy kiÓm tra.......................................................................................................
§iÓm
NhËn xÐt cña gi¸o viªn
§Ò Bµi
I. TRAÉC NGHIEÄM KHAÙCH QUAN: (2 ñieåm)
Haõy khoanh troøn vaøo caùc chöõ caùi ñöùng tröôùc caâu traû lôøi maø em cho laø ñuùng. 
Caâu 1. Nhoâm laø vaät lieäu 
A. Phi kim loaïi . C. Kim loaïi maøu .
B. Kim koaïi ñen. D. Chaát deûo nhieät raén. 
Caâu 2: . Moái gheùp baèng then vaø choát coù ñaëc ñieåm.
A. Caáu taïo ñôn giaûn, khoâng thaùo ñöôïc.	 
B. Deã thaùo laép vaø thay theá nhöng chòu löïc keùm.
C. Caùc chi tieát gheùp coù theå xoay, tröôït treân nhau. 
 D. Chòu ñöôïc nhieät ñoä cao, löïc lôùn.
Caâu 3 : Em haõy ñieàn chöõ Ñ neáu caâu ñuùng hoaëc S neáu caâu sai vaøo oâ ôû nhöõng caâu sau:
Noäi dung caâu hoûi
Ñuùng
Sai
1. Moái gheùp baèng ren laø moái gheùp thaùo ñöôïc.
2. Moái gheùp baèng ñinh taùn chòu ñöôïc nhieät ñoä cao, chaán ñoäng lôùn.
3. Khi duõa kim loaïi hai chaân ñöùng song song, ngöôøi thaúng
4. Thöôùc caëp duøng ñeå ño caùc vaät coù kích thöôùc lôùn.
II. TÖÏ LUAÄN .(8 ñieåm )
Caâu 4: Theá naøo laø moái gheùp coá ñònh? Chuùng goàm maáy loaïi? Neâu söï khaùc bieät cô 
baûn cuûa caùc loaïi moái gheùp ñoù? (3 ñieåm)
Caâu 5: Haõy neâu nhöõng tính chaát cô baûn cuûa vaät lieäu cô khí? (3 ñieåm)
Caâu 6: Ñeå ñaûm baûo an toaøn khi cöa, em caàn chuù yù nhöõng ñieåm gì? (2 ñieåm)
Bµi lµm
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