atmosphere & climatology section 2 MCQ Questions & Answers Detailed Explanation

Answer: (a)

Answer: (a)

The troposphere is the lowest layer of the Earth’s atmosphere. The air is very well mixed and the temperature decreases with altitude.

Answer: (a)

A yardang is a streamlined hill carved from bedrock or any consolidated or semi consolidated material by the dual action of wind abrasion, dust and sand, and deflation.

Yardangs become elongated features typically three or more times longer than wide, and when viewed from above, resemble the hull of a boat.

Answer: (c)

A hot local wind blowing in sahara desert is known as Harmattan. The Harmattan is a dry and dusty West African trade wind. This northeasterly wind blows from the Sahara into the Gulf of Guinea between the end of November and the middle of March. The temperatures can be as low as 3 degrees Celsius

Answer: (c)

Insolation is the measure of solar radiation energy recieved on a given surface area in a given time. Some of the solar radiation is absorbed and the rest is reflected. Insolation is largest when the surface faces the sun.

Answer: (c)

Ozone holes are more pronounced at the polar regions especially over Antarctica.