地心引力

Quiz
•
Science
•
4th Grade
•
Medium
TOH Moe
Used 52+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
地球上的物体都可以处于一定的位置。这个现象发生的原因是什么?
地球会产生磁力
地球有地心引力
地球是“生命行星”
地球上的物体会互相吸引
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
地心引力是
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
30 sec • 1 pt
汽车能够固定在它的位置是因为
摩擦力
移动力
地心引力
漂浮力
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
为什么宇航员在太空船是漂浮的?
太空船里是真空的
他摆脱了地心吸引
太空船里注满了空气
太空船里的氧气含量较多
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
俊强把一个网球往上抛。他会得到什么观察结果?
网球往地面掉
网球在空中悬浮
网球飞往太空
网球在空中悬浮了一阵子后,再往地面掉
6.
MULTIPLE CHOICE QUESTION
30 sec • 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
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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