六上-自作-第二單元-(2) & 第一次成績考查(未完)

Quiz
•
Science
•
6th Grade
•
Medium
林思蓉 林思蓉
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18 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
有些物質遇熱會改變性質,冷卻後部會再恢復。
正確
錯誤
2.
MULTIPLE CHOICE QUESTION
3 mins • 2 pts
在空的錐形瓶口套上氣球,放入熱水中,氣球會膨脹是因為水熱縮冷脹的關係。
正確
錯誤
Answer explanation
在空的錐形瓶口套上氣球,放入熱水中,氣球會膨脹是因為水熱縮冷脹的關係。
正確答案:
因為瓶內的氣體熱漲冷縮。
3.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
在"液體的熱脹冷縮"實驗中,將錐形瓶的水染色是為了方便觀察水位的變化。
正確
錯誤
4.
MULTIPLE CHOICE QUESTION
3 mins • 2 pts
早期鐵路列車的鐵軌和鐵軌之間會保留縫隙,是為了提高列車行駛速度。
正確
錯誤
Answer explanation
早期鐵路列車的鐵軌和鐵軌之間會保留縫隙,是為了提高列車行駛速度。
正確答案:
早期鐵路列車的鐵軌和鐵軌之間會保留縫隙,是為了避免熱漲冷縮使鐵軌變形。
5.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
當溫度上升時,酒精溫度計內的酒精體積會膨脹,並且沿著細管往上升。
正確
錯誤
6.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
下列哪一種物品加熱冷卻後,會變回原來的性質呢?
文蛤
巧克力
蝦子
肉片
7.
MULTIPLE CHOICE QUESTION
2 mins • 2 pts
橋梁水泥板之間的接縫處留一小段縫隙,這樣的設計有什麼作用?
減少摩擦力
預留熱漲冷縮的空間
增加汽車行駛的樂趣
比較美觀
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