atmosphere & climatology section 2 MCQ Questions & Answers Detailed Explanation

Answer: (b)

The lowest layer of the atmosphere, 6 miles (10 km) high in some areas and as much as 12 miles (20 km) high in others, within which there is a steady drop in temperature with increasing altitude and within which nearly all cloud formations occur and weather conditions manifest themselves.

Answer: (b)

Injurious ultraviolet radiations are mostly prevented from reaching the land surface as these are mostly absorbed by ozone which are formed in stratosphere.

Answer: (a)

The temperature of the equatorial regions is hot throughout the year, with a very low-temperature range usually of less than 3 degrees celsius. Tropical rainforest climate is a type of tropical climate in which there is little or no dry season – all months have mean precipitation values of at least 60 mm.

Tropical rainforest climates have no pronounced summer or winter; it is typically hot and wet throughout the year and rainfall is both heavy and frequent.

One day in an equatorial climate can be very similar to the next, while the change in temperature between day and night may be larger than the average change in temperature between “summer” and “winter”.

Answer: (b)

Answer: (b)

Over 99% of the mass of the earth's atmosphere is contained in two layers: the troposphere and the stratosphere. Most of the earth's atmosphere (80 to 90%) is found in the troposphere, the atmospheric layer where we live.

This layer, where the earth's weather occurs, is within about 12 km of the earth's surface.

Answer: (b)