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WorksheetsBrownian motion and thermal energy transfer
Total questions: 5
Worksheet time: 2mins
Which key term describe the ransom movement of particles? 分子的无规则运动
绝对零度 Absolute zero degree
Brownian motion 布朗运动
Osmosis 渗透
None of above
State the way the thermal energy ( 热能） is transferred?
Conduction 传导
Convection （对流）
Radiation (辐射）
none of above
Why wearing fur coat （毛衣）make us feel warm??
To avoid the sun radiation to warm our body
because air trapped inside the coat is a poor heat conductor( 热的不良导体）
because air trapped inside the coat is a good heat conductor（热的良导体）
As the balloon's size becomes bigger when it rises to higher altitudes （飞到更高) , why
As the atmospheric pressure increase at high altitudes, the balloon's size increases （高的地方大气压强增加，气球的体积增加）
As the atmospheric pressure decreases at high altitudes, the balloon's size decreases （高的地方大气压强减少，气球的体积增加）
哪一个特质是防止热对流出去？
银色的内壁
封条
封条和真空层
塑料盖
