ĐỀ CƯƠNG HỌC KÌ I
MÔN CÔNG NGHỆ 8
Caâu 1:Haõy neâu caùc tính chaát cô baûn cuûa vaät lieäu cô khí?
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Caâu 2: vaät lieäu cô khí chia ra làm máy nhóm lớn, kể tên?
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Caâu 3:Haõy phaân bieät söï khaùc nhau cô baûn giöõa kim loaïi vaø phi kim loaïi,giöõa kim loaïi ñen vaø kim loaïi maøu?
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Caâu 4:Lieät keâ caùc duïng cuï cô khí vaø coâng duïng cuûa chuùng?
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Caâu 5:Ñeå ñaûm baûo an toaøn khi cöa caàn chuù yù nhöõng ñieåm gì?
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Caâu 6:Ñeå ñaûm baûo an toaøn khi duõa caàn chuù yù nhöõng ñieåm gì?
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Caâu 7:Taïi sao chieác maùy ñöôïc cheá taïo goàm nhieàu chi tieát laép gheùp vôùi nhau?
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Caâu 8:Taïi sao ngöôøi ta khoâng haøn chieác quai vaøo noài nhoâm maø phaûi taùn ñinh?
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Câu 9: Nêu điểm giống nhau và khác nhau của cơ cấu tay quay-con trượt, bánh răng-thanh răng ?
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Câu 10: vẽ các hình chiếu của các vật thể sau
