Question

In what way does the temperature of water at the bottom of a waterfall differ from the temperature at the top? Explain the reason.

Answer 1

in top the potential energy will be maximum when it is falling down it loses potential energy and it converted into heat energy 

Answer 2

when water falls from a height the potential energy stored in water at that height changes into the kinetic energy of water during the falls on striking the ground a part of the kinetic energy of water changes into heat energy due to which the temperature of water rises