地心引力
Quiz
•
Science
•
4th Grade
•
Practice Problem
•
Medium
WONG Moe
Used 245+ times
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10 questions
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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
以下哪一种现象和地心引力的效应有关,除了
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
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
伟豪从地面跳上凳子后,再从凳子跳回地面。 哪项有关上述活动的说明是正确的?
跳上凳子比跳下凳子容易
跳下凳子比跳上凳子容易
跳上和跳下凳子都是一样容易
跳上和跳下凳子都非常困难
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
地心引力对地球的作用有什么重要性?
Q和S
R和S
P、Q和S
Q、R和S
5.
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
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图1显示一种现象。选出有关图1现象的正确解释。
这种现象的发生是因为地球从东转向西。
果实掉落地面是因为地心引力
物体漂浮是因为地球绕太阳公转
这种现象形成白昼和黑夜
7.
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
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