
地心引力
Authored by WONG Moe
Science
4th Grade
Used 90+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
地心引力的方向是
竖直向上的
竖直向下的
向上倾斜的
向下倾斜的
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
什么是地心引力?
把物体拉向地面的力
把物体拉向地球的力
让地球转动的力
让地球被月球吸引的力
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
为什么人类可以平稳地走路?
穿了一双好鞋子
地心引力的效应
鞋子品质好
摩擦力使我们平稳
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
为什么宇航员可以漂浮在外太空?
太空船是真空的
宇航员摆脱了地心引力
太空的空气太稀薄
太空的空气使宇航员漂浮
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
以下哪一种现象和地心引力的效应无关?
平稳地坐在椅子上
芒果从树上掉下来
雨水往下落
打开电视机看电视
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
爬楼梯时比上楼梯吃力,这是受到地心引力的影响
正确
错误
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列哪项说明是正确的?
天上的小鸟不会受到地心引力的影响
没有了地心引力,海水不会漂流到外太空
没有了地心引力,对我们生活不会有影响
没有了地心引力,我们没办法平稳地坐着
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