The sun is the earth's sole source of heat energy. It is responsible for many things, including the water cycle, ocean currents and winds.
The sun can heat land more quickly than it heats the oceans and seas. However, once water warms up, it retains its heat longer than does soil and rock. These facts can help us understand certain weather patterns.
For example, by late spring the land is warmer than the oceans. The landmass heats the air around it. Warm air rises.
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