B.1 Name the different layers of the atmosphere.
Ans There are 5 layers in the atmosphere: -
1) Exosphere
2) Thermosphere
3) Mesosphere
4) Troposphere
5) Stratosphere
2. Mention two main functions of the atmosphere
Ans: - The two main functions of atmosphere are: -
1) It has life sustaining gases like oxygen.
2) It protects us from the harmful ultraviolet and infrared rays of the sun
3) It also retains the necessary warmth on the earth
3. a) What is insolation? How does the atmosphere get heated?
Ans: - a) Insolation is the amount of solar energy received by a given area on Earth
b) The atmosphere is heated mainly from the Earth’s surface, the sun warms the ground and
releases heat into the air by conducting, convection and radiation. This process, along with the
greenhouse effect
keeps the atmosphere warm
D.
1. Global warming
Ans: - Global warming is the gradual rise in the Earth is temperature due to extra heat, trapped by
greenhouse gases in the atmosphere
2. Greenhouse Effect
Ans: - The greenhouse effect, is a natural process that warms the Earth’s surface and makes it
possible for life to exist.
3. Atmosphere
Ans: - The atmosphere is the layer of gases that surrounds a planet, such as Earth, held in place by
gravity
4. Ozone
Ans: - Ozone is the layer of gases that surrounds a planet, such as Earth, held in place by gravity
E.1 Maritime and Continental Climate.
Ans There are 5 layers in the atmosphere: -
1) Exosphere
2) Thermosphere
3) Mesosphere
4) Troposphere
5) Stratosphere
2. Mention two main functions of the atmosphere
Ans: - The two main functions of atmosphere are: -
1) It has life sustaining gases like oxygen.
2) It protects us from the harmful ultraviolet and infrared rays of the sun
3) It also retains the necessary warmth on the earth
3. a) What is insolation? How does the atmosphere get heated?
Ans: - a) Insolation is the amount of solar energy received by a given area on Earth
b) The atmosphere is heated mainly from the Earth’s surface, the sun warms the ground and
releases heat into the air by conducting, convection and radiation. This process, along with the
greenhouse effect
keeps the atmosphere warm
D.
1. Global warming
Ans: - Global warming is the gradual rise in the Earth is temperature due to extra heat, trapped by
greenhouse gases in the atmosphere
2. Greenhouse Effect
Ans: - The greenhouse effect, is a natural process that warms the Earth’s surface and makes it
possible for life to exist.
3. Atmosphere
Ans: - The atmosphere is the layer of gases that surrounds a planet, such as Earth, held in place by
gravity
4. Ozone
Ans: - Ozone is the layer of gases that surrounds a planet, such as Earth, held in place by gravity
E.1 Maritime and Continental Climate.
