
4年级科学第9课:地心引力
Authored by CYNTHIA CHANG
Science
4th Grade
Used 152+ times

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10 questions
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1.
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
2.
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
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
物体会落在地面是因为什么的存在?
地心引力
天气变化
想象力
质量
4.
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
5.
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
6.
MULTIPLE SELECT QUESTION
30 sec • 1 pt
以下哪些是地心引力的效应?(多选题)
气球会在空中漂浮
人类可以平稳地走路
动物能在地面上奔跑
往上抛的物体会飞往太空
7.
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
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