
初三科学上册第6章 热
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Science
9th Grade
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15 questions
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1.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
什么是传导?
传导是热通过物体内部直接传递的方式,通常需要介质。
传导是物体表面热量的散失方式。
传导是热量通过辐射方式传播的过程。
传导是气体分子之间碰撞传递热量的方式。
2.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
保温瓶的结构如何影响热传递?
通过增加瓶内外之间的热传递来提高保温效果。
通过减少瓶内外之间的热传递,达到保温效果。
通过使用导热材料来增强热传递。
通过增加瓶的厚度来减少热传递。
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
热量的单位是什么?
千卡(kcal)
焦耳(J)
瓦特(W)
牛顿(N)
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
热量的定义是什么?
热量是物体在热传递中吸收或放出的热的多少。
热量是物体的温度变化的量度。
热量是物体的质量与温度的乘积。
热量是物体在化学反应中释放的能量。
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
什么是对流?
对流是热通过流体(液体或气体)中物质的运动而传递的方式。
对流是固体物质的直接接触传递热量的方式。
对流是通过辐射传递热量的过程。
对流是气体在真空中传播的现象。
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
辐射与传导的主要区别是什么?
辐射需要介质,而传导不需要介质。
辐射不需要介质,而传导需要介质。
辐射和传导都需要介质。
辐射和传导都不需要介质。
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
辐射的特点是什么?
辐射不需要任何介质,可以在真空中传播。
辐射只能在空气中传播。
辐射需要水作为介质。
辐射的速度比光速慢。
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