Which of the following is NOT a factor that can increase the rate of evaporation of water in a lake?
increase in the pressure of the atmosphere
rise in temperature
increase in the average speed of the molecules of water
increase in the kinetic energy of the molecules of water
Explanation
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The correct answer is: A
Increase in the pressure of the atmosphere
Explanation:
Evaporation is the process by which water molecules escape from the liquid surface into the air. The rate of evaporation depends on several factors:
1. Rise in temperature (B) – Increases the energy of water molecules, making it easier for them to escape.
2. Increase in the average speed of molecules (C) – Faster molecules are more likely to break free from the liquid surface.
3. Increase in kinetic energy of molecules (D) – More energy means more molecules have enough energy to evaporate.
The proof is that:
Increasing atmospheric pressure (A) suppresses evaporation by pushing down on the water surface, making it harder for molecules to escape into the air.
Thus, the correct answer is A.
