四年级科学题复习(单元九)

Quiz
•
Science
•
4th Grade
•
Medium
Jia Ivory
Used 10+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
地心引力可以让所有抛出的物体最终掉回地面。
正确
错误
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
判断下列哪一项说法是错误的。
没有地心引力,月球也会围绕地球转动
我们可以平稳坐在椅子上是因为地心引力的效应
没有地心引力,海水会漂浮到太空中
地心引力是向着地球的中心
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
当你放开手时,橡皮擦会落向地面,橡皮擦受到的力是?
压力
弹力
地心引力
摩檫力
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
关于地心引力的描述哪个是错误的?
没有地心引力,地球上的空气将会消失
地心引力使得物体不会悬空
地心引力会把物体吸引在地球表面
有没有地心引力,对我们的生活没有影响
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
下列现象中涉及到地心引力的是?
飞机在天上飞
把茶壶的茶水倒进茶杯
鱼儿在水里游动
水放入冰箱冷冻后结冰了
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
假如没有地心引力,下列猜想正确的是?
树叶随风摇摆
举起很重的物体不容易
物体不会掉落
杯子的水会轻易倒出来
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
用手提提包,感到很重,有一种什么样的感觉?
向一边倾斜
向下拉
向上
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