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Layers of the Atmosphere

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

How many percent of oxygen does the atmosphere contain?

a)

78%

b)

60%

c)

25%

d)

21%

2.

What is the correct order of Earth's atmosphere layers from bottom to top?

a)

Stratosphere

Mesosphere

Troposphere

Thermosphere

Exosphere

b)

Stratosphere

Troposphere

Thermosphere

Mesosphere

Exosphere

c)

Troposphere

Mesosphere

Stratosphere

Thermosphere

Exosphere

d)

Troposphere

Stratosphere

Mesosphere

Thermosphere

Exosphere

3.

Which layer of the atmosphere contains the ozone layer?

a)

Mesosphere

b)

Stratosphere

c)

Thermosphere

d)

Troposphere

4.

In which layer do virtually all weather phenomena takes place??

a)

Exosphere

b)

Mesosphere

c)

Stratosphere

d)

Troposphere

5.

In which atmospheric layer is most water vapor found?

a)

Troposphere

b)

Stratosphere

c)

Mesosphere

d)

Thermosphere

6.

Which layer does merge into space?

a)

Stratosphere

b)

Exosphere

c)

Mesosphere

d)

Thermosphere

7.

Where do meteors burn in the atmosphere?

a)

Thermosphere

b)

Troposphere

c)

Mesosphere

d)

Exosphere

8.

What is the basis for the division of the layers of the atmosphere surrounding Earth?

a)

changing temperature

b)

changing weather patterns

c)

changing amount of oxygen

d)

changing composition of gases

9.

Why is the presence of ozone above the troposphere important for the survival of living things on Earth?

a)

It warms Earth's surface.

b)

It helps in cloud formation.

c)

It makes jet flying more comfortable.

d)

It offers protection from the Sun's harmful UV rays.

10.

The greenhouse effect is a natural phenomenon. Without a natural greenhouse effect, the temperature of the Earth would be about -18 degrees Celsius instead of 14 degrees Celsius at present. Why are scientists concerned about the greenhouse effect?

a)

There is no technology that will keep the temperature of Earth constant.

b)

Planting trees in wider areas is not possible; Earth has many desert areas.

c)

Human activities like burning fossil fuels and deforestation enhance the greenhouse effect.

d)

The human population is increasing rapidly; more carbon dioxide will be released into the atmosphere.