In general, the land changes temperature much more rapidly than the ocean. How does this fact explain the existence of land breezes and sea breezes?

Land and sea breeze are produced because the land changes temperature rapidly than the ocean.

Explanation:

The rates of heating up of land and sea are different. Land gets heated up faster than water. Temperature is crucial in determining the density of air.

When land gets heated up the air near the land turns hot and this temperature is greater than the temperature of the air near the water surface. Hotter air has less density than the air which is relatively less warm. Density difference creates pressure difference.

Denser air has higher pressure than less dense air making air move from area of high pressure to area of low pressure. During the day the land is heated up more and thus air move from sea to land and it is called sea breeze. Just like it absorbs heat land releases heat at a faster rate.  

Thus at night land the sea will be warmer than the sea and thus air will move from the land to the sea and it is called land breeze.

Answer

Explanation:

Sea breezes occur during hot, summer days because of the unequal heating rates of land and water. During the day, the land surface heats up faster than the water surface. Therefore, the air above the land is warmer than the air above the ocean.