On which will the air be the cooler when the sun shines, on the earth, or on the water?
It will be cooler on the water than on the earth.
Why does a sea-breeze feel cool in the daytime?
Because the air over the water, in the daytime, is less heated than the air over the land; hence, the sea-breeze feels cool.
Why does the earth become colder than the water at night?
Because the earth gives off its heat more rapidly than the water, and as it receives no heat from the sun at night, it soon becomes colder than the water.
Why does a land-breeze feel cool at night?
Because the air over the land at night is less heated than the air over the water; hence, the land-breeze feels cool.
How rapidly does the wind move?
A gentle breeze goes four or five miles in an hour; a high wind goes from twenty to fifty miles in an hour, and a hurricane goes from sixty to one hundred miles in an hour.