Question

Wind occurs when air masses

Answer 1

The ultimate cause of weather change is the amount of solar radiation that this planet

receives. The amount of energy that this planet gets from the sun alone is equivalent

to millions of exploding hydrogen bombs!  On a lark, I computed the energy equivalent

of the total amount of matter in the known universe (1 * 10^53 kg) using one of the

most (if not the) famous equations in history ( E = mc^2). It came out to 9 followed

by 73 zeros!  Then I computed the energy equivalent of an electron (1 * 10^-31 kg).

That came out to 81 preceded by 8 zeros!

Answer 2

air moves because of two reasons..
1 temperature difference
2 pressure difference

1 temperature difference :
 when there is temperature difference in the atmosphere ,,hot air rises and cold air takes its place ... so movement of air occurs..
2 pressure difference:
also when there is pressure difference in atmosphere ,, air moves away from the area where there is more pressure..
if there is no temperature and pressure difference then air will not move...