Physics for IGCSE & O level - Thermal Effects (Section 3 - No. 27)
In the context of evaporation and cooling, what causes the cooling effect?
The faster particles leaving the liquid.
The slower particles leaving the liquid.
The liquid absorbing heat from the surroundings.
The liquid releasing heat to the surroundings.
解释
Faster particles escaping carry away energy, lowering the average energy of the remaining liquid.