GENERAL KNOWLEDGE

GK

GENERAL SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Wind is caused mainly by air pressure differences that result from ____
A
uneven heating of the Earth’s atmosphere.
B
absorption of ultraviolet radiation by Earth’s land masses.
C
radiation of heat from Earth’s land masses to water bodies.
D
rotation of Earth on its axis.
Explanation: 

Detailed explanation-1: -Wind is caused by uneven heating of the earth’s surface by the sun. Because the earth’s surface is made up of different types of land and water, the earth absorbs the sun’s heat at different rates. One example of this uneven heating is the daily wind cycle.

Detailed explanation-2: -Explanation: The earth is tilted on its axis and the rays of the sun are falling directly on the equator which produce heat at the equator more than the other region. They fall slanting as we move north or south of the equatorial region. This heat also depends on the revolution of the earth.

Detailed explanation-3: -Ocean Currents Earth receives more solar radiation at the equator than it does at the poles; this uneven distribution of heat creates pressure differences, which in turn cause the movement of air, or wind. Because the poles are either north or south of the equator, winds have a northward or southward flow.

There is 1 question to complete.