wayground logo

Free Printable Worksheets

NEW

Font size

S
M
L
XL
Worksheets

Air Composition and Structure

Total questions: 15

Worksheet time: 5mins

Name
Class
Date
1.

Mixture of several gases form our

a)

Surface

b)

Photonic teplate

c)

Atmosphere

d)

Temperature

2.

It is the lowest and the densest layer of the atmosphere

a)

Troposphere

b)

Thermosphere

c)

Exosphere

d)

Stratosphere

3.

The uppermost layer of the Atmosphere is called

a)

Thermosphere

b)

Troposphere

c)

Exosphere

d)

Stratosphere

4.

Ozone is concentrated in the lower part of

a)

Thermosphere

b)

Stratosphere

c)

Tropopause

d)

Exosphere

5.

The percentage of nitrogen in the atmosphere is

a)

78%

b)

21%

c)

10%

d)

0.01%

6.

The ............................... layer is also known as Ozonosphere

a)

Troposphere

b)

Stratosphere

c)

Mesosphere

d)

Exosphere

7.

The boundary between troposphere and stratosphere is called

a)

Stratopause

b)

tropopause

c)

Mesopause

8.

Ozone layer protect us from the .......................... rays

a)

Ultraviolet

b)

Tropopause

c)

Ionosphere

d)

Moon

9.

Electrically charged particles called ions are found in this layer

a)

Stratosphere

b)

Thermosphere

c)

Exosohere

d)

Mesosphere

10.

Straight Horizontal or Undisturbed layer is present .........................................

a)

Exosphere

b)

Troposphere

c)

Stratosphere

d)

Mesosphere

11.

Atmosphere contains ............. % of Oxygen

a)

78%

b)

0.01%

c)

21%

d)

None of these

12.

the Temperature on this layer can may reach upto 4,500*C

a)

Exosphere

b)

Mesosphere

c)

Troposphere

d)

Stratosphere

13.

This layer helps in long distance wireless and satellite communication

a)

Exosphere

b)

Troposphere

c)

Thermosphere

d)

None of these

14.

this layer burns the meteors which comes from outer space

a)

Mesosphere

b)

Thermosphere

c)

None of these

d)

All of these

15.

The Earth is surrounded by a thick layer of blanket of gases called

a)

Mesosphere

b)

Ionosphere

c)

Atmosphere

d)

All of these