Unequal heating of air over land and water results in breezes near shorelines. While the land is warm during the day, air above it rises, and a cool breeze blows in from the sea. As the land cools off at night, air pressure over it increases, and a cool land breeze blows out to the sea. a) true
b) false

True

Explanation:

The answer to this question is true.

We have Sea breezes occuring during during days that are hot and summer days as a result of the unequal heating rates of land and water.

During the afternoon, we have the land surface getting heated up faster than the water surface. As this happens, air above it begins to rise which then forms low pressure area close to the land. Air on land is hotter than the one above water.

We then have cool air in areas with high pressure spreading across water and over land.

Let the force exerted by Earth on an object of mass 'm' at height 'h' where the gravitational acceleration is 'g' be 'F' and the potential energy of the object be 'E'.

We know,
F = mg
(for a body experiencing gravitational pull of magnitude 'g')

And, E = mgh
Replacing mg = F in E, we get:
E = F x h

That is the relation between potential energy for a body at height 'h' and the gravitational force it experiences at that height.