Question

1. How is our atmosphere different
from the atmospheres on Venus
and Mars?
2. How does the atmosphere act as
a blanket?
3. What causes winds?
4. How are clouds formed?
5. List any three human activities
that you think would lead to air
pollution

Answer 1

Answer:

1. "Earth’s atmosphere is composed of various gases like oxygen, carbon dioxide, nitrogen, water vapour along with various gases in small quantities, hence making it a balanced composition that is livable than other planets. Planets like Venus and Mars have more than 95% of carbon dioxide in the air making the existence of life impossible.
2. The atmosphere prevents the sudden increase in temperature during the daytime. Also, at night it helps to maintain an average temperature by slowing down the escape of heat from the Earth surface to outer space.
3. Gases move from high-pressure areas to low-pressure areas. And the bigger the difference between the pressures, the faster the air will move from the high to the low pressure. That rush of air is the wind we experience
4. Clouds form when the invisible water vapor in the air condenses into visible water droplets or ice crystals
5. Three human activities that would lead to air pollution are: i) Emission of harmful gases and dust particles from vehicles. ii) Combustion of fossil fuels like coal, petroleum releasing oxides of nitrogen and sulphur. iii) Smoke released from industries containing harmful gases like sulphur dioxide, oxides of nitrogen."

Answer 2

Answer:

The atmosphere acts as a blanket in the following ways: (1) It maintains the temperature on the surface of earth during day and night time. (2) It contains Ozone in the upper layer which protects life from harmful ultraviolet radiation.

Explanation:

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