Water has a very high specific capacity and it takes more heat to cause a fractional increase in its temperature. During day, the air around water is cold and dense and under high pressure.

The land adjacent to the water, is a better conduct with a low specific heat capacity. When warming of the earth starts by the sun, the air on land heated by heat radiated from the surface. Air on land is warm, less dense and light.

This forces the air on land to move seaward and the cold air from the sea to move land ward and a sea breeze is set up.

At night the reverse is the case. The land loses heat very fast and the air around it is cold and dense. The water body does not lose heat so fast and the air around is warm and lighter. Air from the land replaces that on the surface of water and a land breeze is set up

learn more:

Heat transfer from the sun brainly.com/question/1140127

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6 0

2 years ago

World class speed skaters can skate a 3,000-m course in about 4 minutes. What is their average speed for this course.

Semenov [28]

A. 12.5 m/s.

The average speed is defined as the relationship between the displacement made by a body and the total time it took to perform it.

The formula that will allow you to calculate the average speed is:

v = d/t, where d is the traveled distance and t the time it took to travel the distance.

We hace to convert 4 minutes to second:

(60 s/1 min)*(4 min) = 240 s

So, the average speed is:

v = 3000 m/240 s

v = 12.5 m/s

5 0

2 years ago