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Science
6th Grade
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
什么是气压?
两个物体表面相互接触时所产生的力
物体对另一个物体所施加的推或拉等作用
空气中粒子撞击在某个物体而产生的压力
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
以下哪个说明是不正确的?
在越高的地方, 气压越高
注射器是以气压的原理来操作
在越高的地方,气压越低
3.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
为什么吸盘挂钩能紧贴在玻璃表面上?
吸盘内的空气被推至吸盘外, 吸盘内的空气粒子减少,导致气压上升。
吸盘内的空气被推至吸盘外, 吸盘内的空气粒子增加,导致气压下降。
吸盘内的空气被推至吸盘外, 吸盘内的空气粒子减少,导致气压下降。
4.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
辉文在一个炼乳罐上撬开一个小洞孔,但发现炼乳倒不出来。为什么?
炼乳的体积太大
周围的气压使炼乳倒不出来
盖上的孔不够大
盖上的孔被堵住了
5.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
气压的高低与什么有关?
温度
高度
湿度
摩擦力
6.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
吸管吸水使用了什么原理
摩擦力
推力
气压
压力
7.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
什么地方空气很稀薄
高原
课室
家里
广场
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