Question

2. What are the different types of winds? Describe each, giving examples
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Answer 1

Explanation:

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Wind in simple terms is nothing but moving air. We all enjoy wind rustling through the leaves in our garden. It has also expanded the range of transport and has provided a power source in terms of mechanical energy for the generation of electricity in windmills and recreation purposes in hot air balloons. Wind power was also used in voyages by sailors to direct their ships. When the winds are strong, they lead to the destruction of life and property in the form of cyclones and storms, causing forest fires, landslides etc. In this article, we will learn about the causes of wind and the destruction caused by winds.

Types of Wind

Wind blowing above the earth surface may be classified into five major types :

• Planetary winds
• Trade winds
• The westerlies
• Periodic winds
• Monsoon winds
• Land breeze
• Sea breeze
• Mountain and valley breeze
• Local winds

￫ Planetary Winds

Planetary winds comprise winds distributed throughout the lower atmosphere. The winds regularly blow throughout the year confined within latitudinal belts, mainly in north-east and south-east directions or from high-pressure polar-regions to low-pressure regions.

￫ Trade Winds

These winds are also known as tropical easterlies and blow from the right in Northern hemisphere and to the left in the Southern hemisphere due to Coriolis effect and Ferrel’s law. They start blowing from the sub-tropical high-pressure areas towards the equatorial low-pressure belt. In the Northern hemisphere, they blow as northeastern trades, and in the Southern hemisphere they blow as southeastern trades.

￫ The Westerlies

These winds are also known as Shrieking Sixties, Furious Fifties, and Roaring Forties. They blow from the subtropical high-pressure belts towards sub-polar low-pressure belts. The westerlies of Southern hemisphere are stronger and constant than the westerlies of Nothern hemisphere.

￫ Periodic Winds

These winds change their direction periodically as there is a change in the seasons. Following are the types of periodic winds:

￫ Monsoon winds

The temperature difference created by the Indian Ocean, Arabian Sea, Bay of Bengal and Himalayan wall forms the basis of monsoon in the Indian subcontinent.

￫ Land breeze

These winds blow from land to sea, carrying no moisture but dry and warm.

￫ Sea breeze

These winds blow from sea to land, carrying some moisture.

￫ Mountain and valley breeze

Valley breeze is the hot air blowing from the valley which flows up to the slopes of mountain slopes. In contrast, mountain breeze is the valley breeze that is the cold air from the mountain flow towards the valley.

￫ Local winds

The local winds include the sea and the land breeze created due to the pressure difference between the air over the sea and the land regions. Loo is the local winds that blow in the northern part of India.

Answer 2

Explanation:

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Wind in simple terms is nothing but moving air. We all enjoy wind rustling through the leaves in our garden. It has also expanded the range of transport and has provided a power source in terms of mechanical energy for the generation of electricity in windmills and recreation purposes in hot air balloons. Wind power was also used in voyages by sailors to direct their ships. When the winds are strong, they lead to the destruction of life and property in the form of cyclones and storms, causing forest fires, landslides etc. In this article, we will learn about the causes of wind and the destruction caused by winds.

Types of Wind

Wind blowing above the earth surface may be classified into five major types :

• Planetary winds
• Trade winds
• The westerlies
• Periodic winds
• Monsoon winds
• Land breeze
• Sea breeze
• Mountain and valley breeze
• Local winds

￫ Planetary Winds

Planetary winds comprise winds distributed throughout the lower atmosphere. The winds regularly blow throughout the year confined within latitudinal belts, mainly in north-east and south-east directions or from high-pressure polar-regions to low-pressure regions.

￫ Trade Winds

These winds are also known as tropical easterlies and blow from the right in Northern hemisphere and to the left in the Southern hemisphere due to Coriolis effect and Ferrel’s law. They start blowing from the sub-tropical high-pressure areas towards the equatorial low-pressure belt. In the Northern hemisphere, they blow as northeastern trades, and in the Southern hemisphere they blow as southeastern trades.

￫ The Westerlies

These winds are also known as Shrieking Sixties, Furious Fifties, and Roaring Forties. They blow from the subtropical high-pressure belts towards sub-polar low-pressure belts. The westerlies of Southern hemisphere are stronger and constant than the westerlies of Nothern hemisphere.

￫ Periodic Winds

These winds change their direction periodically as there is a change in the seasons. Following are the types of periodic winds:

￫ Monsoon winds

The temperature difference created by the Indian Ocean, Arabian Sea, Bay of Bengal and Himalayan wall forms the basis of monsoon in the Indian subcontinent.

￫ Land breeze

These winds blow from land to sea, carrying no moisture but dry and warm.

￫ Sea breeze

These winds blow from sea to land, carrying some moisture.

￫ Mountain and valley breeze

Valley breeze is the hot air blowing from the valley which flows up to the slopes of mountain slopes. In contrast, mountain breeze is the valley breeze that is the cold air from the mountain flow towards the valley.

￫ Local winds

The local winds include the sea and the land breeze created due to the pressure difference between the air over the sea and the land regions. Loo is the local winds that blow in the northern part of India.