CBSE Questions for Class 9 Geography Climate Quiz 3 - MCQExams.com

The Southwest Monsoon winds blow over the warm oceans, gather moisture and bring widespread rainfall over the mainland of India.

The differential heating and cooling of land and water creates low pressure on the landmass of India.

During winter, there is a high-pressure area north of the Himalayas. Cold dry winds blow from this region to the low-pressure areas over the oceans to the south.

The movement of the westerly jetstream to the north of the Himalayas and the presence of the tropical easterly jet stream over the Indian peninsula during summer.

The monsoons are experienced in the tropical area roughly between 20 N and 20 S.

Air moves from the high-pressure area over the southern Indian Ocean, in a south-easterly direction, crosses the equator, and turns right towards the low-pressure areas over the Indian subcontinent. 

The withdrawal, takes place progressively from north to south from the first week of December to the first week of January. 

Winds that give maximum rainfall to India are south west monsoon. These winds bring rains towards the end of the summer due to high pressure built in the Indian Ocean.

These monsoon strikes Malabar Coast in the month of June and by November leaves the country. Most of the food production in India depends on these monsoons.

The most important climatic control is latitude. Latitude affects the temperature of a place. The places situated at higher altitudes which are far from equator receive lesser sunlight and places which are located towards the equator which is  0-degree latitude receives more sunlight and are hotter than the places located at higher latitudes. Sunlight also affects precipitation or rainfall.

Thus the latitudinal position of a region decides the climate of the place.

• Rajasthan receives scanty rainfall. The two main reasons are:
  
• Southeast monsoon arising from the Bay of Bengal loses its moisture by the time it reaches the north-western part of India where Rajasthan is located.
  
• And the southwest monsoon arising from the Arabian sea flows parallel to the Aravalli mountains and reach the northeast part of India.
  

• Rajasthan is situated in the North Western part of India. Climatically, Rajasthan is the driest part of India. It receives average rainfall less than 100 cm.
  
• Rajasthan falls under tropical and subtropical climate regions which are characterized by scanty rainfall.
  
• Rainfall is mostly due to cloud busters which are very less.
  

Most of the rain falls between June and September, during the monsoon season.

• The wind flowing in the northern plains in summers is known as loo.
  
• Loo is a strong hot and dry winds that blows over the western Indo-Gangetic plain of north India and Pakistan.
  
• It is especially strong in the months of May and June.