Question

Which are the two situations generate wind current on earth

Answer 1

Causes of Wind Generation

Winds or wind currents are generated by two factors:

Uneven heating between Poles and Equator

Centre of the earth is called Equator and the two extreme positions are
Poles.
Poles are cooler than equator as highest intensity of the sun’s heat and light falls on the equator and it reduces as we go either side of equator towards the poles.
Cooler air from surrounding areas of the equator comes towards the equator to fill the place of warm air which rises up due to sun’s heating.
Similarly, cooler air from poles comes towards the surrounding areas as the surrounding areas have air warmer than the poles.
These winds from north to equator and south to equator are not straight as their direction change due to earth’s rotation on its axis .

Uneven heating between Land and Water

This occurs in the coastal areas.
Sea Breeze: This causes the wind to move from Sea towards Land and the process continues during the day. These are also called Monsoon winds .
Land Breeze: This causes the wind to move from Land towards Sea and the process continues during the night.

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Answer 2

Wind currents are important components of our environment.The reason behind the wind currents are:

1)The temperature differences between two different places can easily create a wind currents and these wind currents are very common in the coastal areas.

2) The atmospheric pressure difference between two places also create wind currents and wind mainly flows from the high pressure zone to the low pressure zone.

And many more.