Question

The horizontal movement of air is called _______.
A)Wind
B)Storm
C)Cyclone
D)Both A and C

Answer 1

Hint :Horizontal movements act on the earth’s crust from side to side i.e. horizontally. Air is a mixture of invisible gases like nitrogen, oxygen and minute amounts of other gases that surrounds the earth and forms its atmosphere. Horizontal movement of air across earth’s surface is measured with an anemometer and it is caused by differences in pressure.

Complete answer :
Wind is the horizontal motion of air. Winds start when there are differences in air pressures. When air pressure is higher at one place than the other, it sets up a force. The force is pushed from high pressure towards the lower pressure. The difference in pressures is directly proportional to the force. That is, the greater the difference in pressures, the stronger the force. Therefore, the movement of air is called ‘wind’.

Option A , is the correct answer.

Note :Force produces global wind patterns that affect climate. For example, the Tropics are always hot. Air rises here and spreads north and south, high above the land. The Earth contains five major wind zones: polar easterlies, westerlies, horse latitudes, trade winds, and the doldrums.