Question

during which of the following processes is there a decrease in the heat content of the form of water indicated? a water as it evaporates from a pond b snow as it melts on a mountainside c rain water droplets as they fall to the ground d ice as it forms on a lake

Explanation:

Evaporation (A) and melting (B) require heat input, so heat content increases. Falling raindrops (C) gain kinetic energy but heat content isn't decreasing. When ice forms on a lake (D), it's a process of freezing which releases heat (exothermic), thus decreasing the heat content of the water - ice system.

Answer:

D. Ice as it forms on a lake