
4年级 单元9 地球
Authored by kaizen centre
World Languages, Science
4th Grade
Used 6+ times

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24 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图一显示三种情况。
根据图1的情况,哪项是最适合的结论?
所有物质都有质量
空气的压力使物体往下掉
地球上有地心引力
物体都具有动力
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
什么是地心引力?
使物体停止移动的力
使物体移动的力
使物体改变移动方向的力
地球吸引其他物体的力
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
如果没有地心引力,将会出现哪项情况?
P:物体向下掉
Q:物体四处漂浮
R: 物体被固定在一定的位置
S: 海水无方向漂流
P 和Q
Q和S
P 和S
R 和 S
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图3显示一张照片。
根据影子的方向,推测这张照片是什么时间拍摄的?
8 am
12 noon
2pm
6pm
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
地心引力主要的作用是什么?
将地球上的生物漂流到太空
将地球上的非生物漂浮在空中
将地球上所有的非生物吸引在地球表面
将地球上的生物和非生物吸引在地球表面
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
图1显示宇杰在篮球场上投篮的情况。如果没有地心引力,将会怎样?
篮球还是会掉下来
篮球会漂浮在空中
宇杰无法抛出篮球
宇杰无法将篮球投进
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
哪项活动显示地心引力的效应?
气球不断 往天空飞去
火箭往太空的方向发射
空军打开降落伞缓缓地落下
宇航员在太空舱里漂流地移动
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