
四年级地球1
Authored by ALVIN Moe
Science
4th Grade

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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下面是一则说明。
因为地球有X,所以地球表面上的一切物体都能处在位置上,不会悬空。
上面说明中的X指的是什么?
推力
拉力
摩擦力
地心引力
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
什么是地心引力?
让植物生长的力
把物体吸向地球的力
让地球环绕太阳运转的力
使物体推动的力
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪项与地心引力无关?
苹果掉到地上
水向下流
火车往前行驶
被抛上去的球往下掉
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
以下哪项与地心引力有关?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
月球的地心引力仅为地球的
1661 .一个60kg重的年轻人站在月球上的重量会是多少?
10kg
20kg
30kg
40kg
6.
MULTIPLE CHOICE QUESTION
30 sec • 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
7.
MULTIPLE CHOICE QUESTION
30 sec • 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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