
4年级 科学 地心引力
Quiz
•
Science, Education
•
4th Grade
•
Practice Problem
•
Medium
HON Moe
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10 questions
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1.
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
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
根据图2,你观察到什么?
推力造成水滴到地面
拉力造成水在空中漂浮
推力造成水固定在其位置
拉力把水吸引到地球中心
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
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
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
什么是地心引力?
造成潮汐的力
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
6.
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
7.
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
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