Winds and Its Types
Winds ans Its Types
Wind: The movement of air from high pressure area to low pressure areas is called wind. Winds can be broadly divided into three types.
Types of winds
Planetary Winds: These winds are also known as Permanent winds. They blow in a particular direction throughout the year. They are of three types:
Trade Winds-These winds move from the subtropical high pressure area to the low pressure areas on the equator. These winds follow Ferrel’s Law which states that all the moving bodies on the surface of the earth deflect towards their right in the Northern Hemisphere and towards their left in the Southern Hemisphere.
Westerlies-They move from the subtropical high pressure belt to the sub-polar low pressure belts.
Polar Winds- These winds blow in the same direction as the trade winds. Monsoon winds and sea and land breezes are examples of this kind of winds.
Monsoon Winds- They have a special impact on the climatic condition of India. They change their directions once every six months.
Land and Sea Breeze-The phenomenon of land and sea breeze is experienced by people living in coastal areas. During the day, land and becomes hotter than the sea. The cooler air from the sea moves towards the land during the day. At night, the land cools down much faster than the sea. The pressure over the sea is lower than the pressure on land, the air from and starts blowing towards the sea, this dry wind is called land breeze.
Seasonal winds- these winds change their direction in different seasons. For example monsoons in India.
Local winds- these blow only during a particular period of the day or year in a small area. For example, land and sea breeze. These winds blow over a small area during a particular period. They blow for a short time and re mostly seasonal. Some local winds are:
Loo- This is the local dry wind and blows from the desert of Rajasthan toward the Ganga Plains. It blows in summer and causes heatstroke over northern India.
Chinook-Chinook means the “snow-eater”. This warm dry wind help to clear the snow and ice rapidly after winters.
Foehn- Foehn is quite similar to Chinook as it blows down the southern parts of the Alps during winters.
Measuring Winds: The speed of wind is measured anemometer.
Choose the correct pair:
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| Right Option : A | |||||||||||
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Which of the following does not relate to polar winds? | |||
| Right Option : D | |||
| View Explanation |
The trade winds, the westerlies and the polar easterlies are ________________- | |||
| Right Option : C | |||
| View Explanation | |||
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