The Distribution and Physical Characteristics of Hot Deserts Flashcards

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What percentage of the Earth’s surface do hot deserts cover?

Hot deserts cover approximately 20% of the Earth’s surface.

Where are hot deserts mainly located?

Hot deserts are mainly located in a band around the Tropic of Capricorn and the Tropic of Cancer, between approximately 15° – 30° north and south of the Equator.

What is the largest hot desert and its size?

The largest hot desert is the Sahara Desert, which covers an area of more than 9.2 million square kilometres.

Why do hot deserts have very dry climates?

Hot deserts have very dry climates due to high air pressure, where descending air warms and leads to little or no precipitation. They also experience low moisture from prevailing winds that come from land masses.

What creates areas of high air pressure in hot deserts?

Areas of high air pressure in hot deserts are created by global atmospheric pressure systems. Air heated at the Equator rises, moves towards the poles, cools, and then sinks between 15° and 30° north and south of the Equator.

What is a rain shadow and how does it affect deserts?

A rain shadow occurs on the leeward side of mountains where descending air warms and dries, resulting in less rainfall. This reduces potential moisture for deserts on the leeward side.

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