Question

A. Fill in the blanks.

1. The thick blanket of air around the Earth is held together because of_______________force.
2. The Earth's atmosphere consists of gases
like_________,_________,_____________ and argon in varying proportions.
3. About 800 km above the Earth's surface, the atmosphere comprises of only light gases like____________
and_______________.
4. It is the presence of the gas_____________that life is sustained on Earth.
5._________________is present invery small proportion in the upper atmosphere and acts as ashield from the harmfulradiation of the Sun.
6. The falling_____________
mostly burn after entering the Earth's atmosphere, which in a
way acts as a protective shield.
7. The_____________is the densest
layer in which atmospheric pressure is concentrated.
8. The tropopause acts as_______ theseparating the troposphere from the__________wherein the temperature stops decreasing.
9. One way to reduce the carbon production in the atmosphere is to develop alternate sources of
energy like _______or_____
energy.
10. The mesosphere is the protective layer wherein most meteorites burn out due to__________with the atmosphere.
11. Thermosphere is also known as________________as the electrically charged particles know as_______________are found here.

Answer 1

Answer:1. gravitational

2.nitrogen,oxygen,hydrogen,carbondioxide

3.hydrogen and helium

4.oxygen

5.ozone layer

6.asteroid or comet

7.troposphere

8.barrier, stratosphere

9.solar,wind

10.force

11...

Explanation:.

Answer 2

1. gravatational

2. nitrogen, oxygen, co2

3. hydrogen, helium

4. oxygen

5. ozone

6.asteriod

7. troposphere

8.barrier, staratosphere

9. solar, wind

10. force

11. ionosphere, ions