Explain the formation of tropical cyclones. Also, illustrate the global distribution of these cyclones.

A tropical cyclone is a low pressure system over tropical or subtropical waters, with organised convection. The winds at lower level rotate clockwise (Southern Hemisphere) and anticlockwise (Northern Hemisphere). Formation of tropical cyclones: Conditions conducive for formation of tropical cyclones: ..

With suitable examples, discuss the various landforms associated with volcanic activities.

Volcano refers to a place from where gases, ashes and lave escapes out. Volcanic landforms are created by cooling of magma or lava. Intrusive Landforms When Magma cools inside the crust. The different types of intrusive landforms are: Batholith: Large ..

Account for the spatial distribution of food gathering as main economic activity around the world.

Food gathering is the lowest order of economic activity. This occupation today persists largely in the equatorial and tropical areas. The chief areas where food gathering survives as a mode of life even today include: Amazon basin (parts of Brazil, ..

Explain the features of the rare-earth metals. Where do they come from?

Rare earths refer to a group of 17 elements that are known for their unique magnetic and electrochemical properties. Three public sector units namely National Aluminium Company (NALCO), Mineral Exploration Corporation Ltd. and Hindustan Copper Ltd. are set to sign ..

What are the conditions for a hurricane to form? Enumerate various categories of Hurricanes as per Saffir-Simpson hurricane scale.

A hurricane is a type of tropical cyclone storms, generally, begin as clusters of thunderstorms over tropical ocean waters. Conditions for the formation of Hurricane: High water temperature at least 26-27 Celsius Relatively moist air Very warm surface temperatures A ..

Explain the causes of the Indian Monsoon.

Monsoon means seasonal reversal of winds which brings rainfall due to moisturised winds passing over water bodies. Indian Monsoon is the seasonal phenomenon caused by the differences of temperature and pressure over water bodies and landmass. In summer, the movement ..

What is El Nino? Has the extreme El Niño become more often?

El Niño is a climate phenomenon that takes place over the equatorial Pacific. When there is a warming of the sea surface temperature in the eastern and central equatorial Pacific Ocean, it is known as El Niño. When the opposite ..

If the Earth's axis were tilted at 40° to the plane of the ecliptic instead of 23½°, what would be the effects of this change on (1) global climate and seasons (2) seasons and climate of India?

Seasons and length of day and night on earth are determined by tilt of earth’s axis wrt ecliptic plane, rotation around the axis and revolution on an elliptical path around sun. If Earth’s axis is tilted at 40o the impact ..

Explain the process of formation of a rift valley, emphasizing on the Great Rift Valley system.

Rift Valley is a depressed area between two adjacent highland areas. It is formed due to tectonic plates’ movement. They are found both on earth and under water. E.g. East African rift Valley, Narmada rift Valley. Process of Rift Valley ..

The third pole of the earth not only important for geographical reasons but also for economic and civilizational aspects of the Indian Subcontinent. Explaining the importance of the region, examine the consequences of its changing features.

The Inner Himalayan region, along with Trans Himalayas and Hindukush mountains is often described as the third pole of the world owing to its crucial role in climate regulation and vast source of fresh water in form of glaciers. It ..