5年级科学评估 (5-8课)
Quiz
•
Science
•
5th Grade
•
Medium
Ren Tutor
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40 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
电能 ➜ 动能 ✚ 声能 ✚ 热能
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列哪项电器可把电能转换成动能?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下图显示榴莲树上结的果实。当x掉下时,它拥有什么能?
电能
热能
动能
光能
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图片显示自行车的车灯装置。下列哪项说明是该装置操作时的能的转换形式?
化学能 ➙ 光能
动能 ➙ 电能 ➙光能
化学能 ➙电能 ➙光能
化学能 ➙动能 ➙光能
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下都是能的来源,除了
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
为什么人造卫星要采用太阳电池来操作?
太阳电池的造价很低廉
在太空中很容易获得太阳能
科学家无法制造出大型的干电池
人造卫星没有存放其他电池的空间
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
木炭燃烧时所涉及的能的转换是怎样的?
化学能 → 热能 → 光能
化学能 → 热能 + 光能
化学能→热能 + 动能
化学能 → 势能 → 热能
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