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प्रश्न
What is known as troposphere?
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उत्तर
Troposphere is the lowest and densest layer of atmosphere touching the land surface. It extends from 8km to 18 km. in height
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संबंधित प्रश्न
How does the average temperature of Earth remain fairly steady?
We often leave the lights switched on and fans running when we are not in the room. We switch on the air-conditioning even though we don’t really need it. We insist on being dropped to school in the car every day. Thus, we waste valuable energy which is generally produced by burning coal and petroleum. As you know, the burning of these fuels release gases that pollute the atmosphere.
Make a list of the similar things that we do without realizing that we are destroying the environment. Think of the ways that we can behave differently.
Fill in the blank
The _________________ is the layer of the atmosphere that help in radio transmission.
Choose the correct answer.
This per cent of the atmosphere is composed of nitrogen.
State any three characteristics of the stratosphere
__________ is the great circle at the centre of the earth.
A layer located in stratosphere which absorbs ultraviolet rays of sun called ______.
Why mountain climbers carry oxygen while climbing?
The atmosphere is held in place by the earth’s ______.
The air envelope is thicker near the earth’s surface and we go higher the density and availability of air gradually decreases. Why?
