Atmosphere MCQ Question and Answer | Geography MCQ Question

Incoming insolation in short waves and terrestrial radiation in long waves helps to maintain the heat budget on the surface of the earth. The insolation received by the earth is in short waves forms and heats up its surface. This energy heats up the atmosphere from below. This process is known as terrestrial radiation. The long wave radiation is absorbed by the atmospheric gases particularly by carbon dioxide and the other green house gases.

Insolation is not one of the three processes involved in the transfer of water between the atmosphere and the surface of the Earth. Insolation is the amount of solar radiation received on a given surface in a given time period.

With 78.09% of total composition, nitrogen is the gas found maximum in lower atmosphere.

Relative humidity of the atmosphere is directly affected by change in atmospheric pressure. Relative humidity is directly related to the amount of water vapor in air, and that's the relationship. The more is the water vapour in the air, the higher the relative humidity is at a given tempera- ture. Air with a relative humidity of 50% contains half of the water vapor it could hold at a particular temperature.

Stratosphere is free from the violent weather changes which occur below in the Troposphere.

Cloud burst means abnormally heavy downpour of rain, associated with a thunderstorm. Cloudbursts usually do not last for more than few minutes, they are capable of flooding the entire area. Rainfall from a cloudburst is usually equal to or greater than 100 mm per hour. Cloudbursts are generally associated with thunderstorms.

The troposphere is the lowest layer of Earth's atmosphere. The troposphere starts at Earth's surface and goes up to a height of 7 to 20 km (4 to 12 miles, or 23,000 to 65,000 feet) above sea level.

Beaufort Scale is used to measure Wind velocity. Beaufort scale, in full Beaufort wind force scale, scale devised in 1805 by Commander (later Admiral and Knight Commander of the Bath) Francis Beaufort of the British navy for observing and classifying wind force at sea.

The depletion of the ozone layer leads, on the average, to an increase in ground-level ultraviolet radiation, because ozone is an effective absorber of ultraviolet radiation.

Nearly 99% of the total mass of the atmosphere lies within 30 km of the Earth's surface. About 99% of the total atmospheric mass is concentrated in the first 20 miles (32 km) above Earth's surface.