Question

A. choose the correct answer:

1. which of the following energy transfers is in the form of short waves?
a. Insulation
b. terrestrial radiation
c. nuclear radiation
d. lonisation

2. The zone marking change in composition and temperature is called a ............. .
a. pause
b. tropopause
c. atmosphere
d. iron

3. The troposphere has the largest concentration of.......... .
a. oxygen
b. nitrogen
C. water vapour
d. atom

4. In the normal lapse rate of temperature, ............ .
a. temperature increases with altitude.
b. temperature decreases with altitude.
C temperature remains constant everywhere.
D. temperature keeps fluctuating every moment

5. Clouds in the mesosphere are formed due to the presence of .............. .
a. moisture
b. smoke
c. cosmic dust
d. ultraviolet rays

________________________

B. Fill in the blanks.

1. Layer of gases which envelops Earth is called.......... .

2. Air contains a variable amount of............. about I to 4 per cent at least.

3. The upper limit of mesosphere is called the .............. .

4. The layer of atmosphere where airplanes fly is called............. .

5. Meteors burn on entering the atmosphere, due to air resistance in the presence of............. .

________________________

C. Give one word for each of the following:

1. one of the gases present in atmosphere in a very small amount............ .

2. weather phenomena take place in this layer of atmosphere............ .

3. the layer of air that saves us from ultraviolet rays........... .

4.radio waves are reflected back to Earth from this layer of atmosphere............ .

5. gravitational pull is minimum in this layer............. .​

Answer 1

Answer:

A 1.a.Insulation is the process by which the energy transfers in the form of short waves.

2.The zone marking change in composition and is called as . tropopause

3.around 80%)

The troposphere is the atmospheric layer closest to the planet and contains the largest percentage (around 80%) of the mass of the total atmosphere. Temperature and water vapor content in the troposphere decrease rapidly with altitude.

4.The ionized part of the Earth's atmosphere is known as the ionosphere. ... This is what gives the Ionosphere its name and it is the free electrons that cause the reflection and absorption of radio waves.

Explanation:

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