Question

How does the sea get hot at night?

Answer 1

Water has the highest specific heat as compared with all other substances therefore the quantum of heat that water requires to cool down by 1 degree Celsius is the highest. Hence even though land and sea receive same amount of heat, sea cools much more slowly and appears hot as compared to land. Moreover as soon as the outermost exposed layer loses heat convection currents set up and bring inner hotter layers out thus making water to appear hot. Both these reasons together make water to apparently get colder much slowly as compared with land.