- Question: What happens to the surrounding temperature when evaporation takes place?
Answer: Decreases
Explanation: Evaporation absorbs heat from the surroundings, leading to a cooling effect. - Question: What is the hidden heat absorbed by a liquid during evaporation called?
Answer: Latent heat
Explanation: Latent heat is the energy absorbed without a temperature rise, allowing the liquid to change into gas. - Question: Why do we feel cool after sweating?
Answer: Evaporation
Explanation: Sweat evaporates by absorbing body heat, which cools down the skin. - Question: What is the process opposite to evaporation?
Answer: Condensation
Explanation: Condensation occurs when gas loses energy and turns back into a liquid. - Question: Why does alcohol feel cold when applied to the skin?
Answer: Evaporation
Explanation: Alcohol evaporates quickly, taking heat from the skin and causing a cooling effect. - Question: Why do desert coolers work better in dry regions?
Answer: Humidity
Explanation: Lower humidity allows faster evaporation, making desert coolers more effective. - Question: What happens to evaporation when temperature increases?
Answer: Increases
Explanation: Higher temperature provides more energy to liquid particles, making them evaporate faster. - Question: Why do earthen pots keep water cool?
Answer: Porosity
Explanation: Earthen pots allow slow evaporation through tiny pores, which cools the stored water. - Question: Why does wet cloth wrapped around a bottle cool the water inside?
Answer: Evaporation
Explanation: Water from the wet cloth evaporates, absorbing heat from the bottle and cooling the water inside. - Question: What happens to evaporation if wind speed increases?
Answer: Increases
Explanation: More wind removes water vapor from the surface, allowing faster evaporation and enhanced cooling.
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