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自然科學
國小五六年級
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目前顯示 20 道題目中的前 5 道——免費註冊即可匯入完整題庫，和全班一起玩。
1
Which of the following is a useful property of synthetic materials that makes them suitable for making waterproof clothing?
A
They are absorbent
B
They are waterproof
C
They are heavy
D
They are biodegradable
2
Why is nylon a good material for making ropes used in climbing?
A
It is very heavy
B
It is strong and elastic
C
It is a good conductor of electricity
D
It is biodegradable
3
What does it mean when a material has 'consistent quality'?
A
It is made in large quantities
B
It is always the same color
C
It is very expensive
D
It has the same properties every time it is made
4
A manufacturer is choosing a material for a new water bottle. The material must be lightweight, durable, and not affect the taste of water. Which synthetic material would be best?
A
Glass
B
Polyethylene (plastic)
C
Aluminum
D
Wood
5
Which of the following is NOT a typical property of synthetic materials?
A
They are always biodegradable
B
They can be made to be very strong
C
They can be flexible
D
They are often waterproof