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Structure of the Atmosphere

Total questions: 15

Worksheet time: 15mins

Name
Class
Date
1.

Temperature increases as altitude increases in both the stratosphere and the thermosphere. What is the main difference between these two layers?

a)

The temperature increases in the stratosphere because of aurora borealis, and in the thermosphere because of the jet stream.

b)

The temperature increases in the stratosphere because ozone absorbs ultraviolet radiation, and in the thermosphere because of direct exposure to the sun.

c)

The temperature increases in the stratosphere because of direct exposure to the sun, and in the thermosphere because ozone absorbs ultraviolet radiation.

d)

The temperature increases in the stratosphere because of the jet stream, and in the thermosphere because of aurora borealis.

2.

Which statement best describes the ozone layer of Earth?

a)

It helps reduce the amount of ultraviolet radiation reaching the surface of earth

b)

It prevents the formation of severe storms in the stratosphere of Earth.

c)

It increases the amount of nitrogen in the troposphere of Earth.

d)

It forms a magnetic field in the mesosphere of Earth.

3.

The layers of gasses, vapour, and dust particles that surround earth is called _______.

a)

Atmosphere

b)

Lithosphere

c)

Hydrosphere

d)

Biosphere

4.

The lowest zone of the atmosphere that extends from Earth's surface to a height of about 10km. Weather forms here and we live in this layer is called _______.

a)

Troposphere

b)

Stratosphere

c)

Mesosphere

d)

Exosphere

5.

The zone of the atmosphere just above the troposphere; This layer contains the ozone layer is called _______.

a)

Stratosphere

b)

Mesosphere

c)

Thermosphere

d)

Exosphere

6.

A layer of the stratosphere rich in ozone molecules which absorb much of the incoming UV radiation is called the _______.

a)

Ozone Layer

b)

Troposphere

c)

Mesosphere

d)

Exosphere

7.

The layer of the atmosphere above the stratosphere characterized by strong east to west winds and the decreasing temperature. This is where meteors burn up is called the _______.

a)

Mesosphere

b)

Troposphere

c)

Thermosphere

d)

Exosphere

8.

The fourth layer of the atmosphere, temperature increases with altitude and reaches up to 2000°C. The hottest layer of the Earth's Atmosphere. This layer contains the auroras: Borealis and Australis is called the _______.

a)

Thermosphere

b)

Troposphere

c)

Stratosphere

d)

Mesosphere

9.

Which layer of the atmosphere is closest to Earth and is where all weather phenomena occur?

a)

Troposphere

b)

Stratosphere

c)

Mesosphere

d)

Thermosphere

10.

What is the primary function of the ozone layer in the Earth's atmosphere?

a)

To absorb ultraviolet radiation from the sun

b)

To trap heat and warm the Earth

c)

To reflect radio waves

d)

To provide oxygen for breathing

11.

In which layer of the atmosphere do most commercial airplanes fly?

a)

Troposphere

b)

Stratosphere

c)

Mesosphere

d)

Exosphere

12.

Which atmospheric layer contains the ionosphere, known for reflecting radio waves?

a)

Troposphere

b)

Stratosphere

c)

Mesosphere

d)

Thermosphere

13.

What is the main reason for the temperature increase in the stratosphere?

a)

Absorption of ultraviolet radiation by ozone

b)

Presence of greenhouse gases

c)

Reflection of solar radiation

d)

Convection currents

14.

Which layer of the atmosphere is known for burning up meteors?

a)

Troposphere

b)

Stratosphere

c)

Mesosphere

d)

Thermosphere

15.

What is the outermost layer of Earth's atmosphere called, where the atmosphere thins out into space?

a)

Troposphere

b)

Stratosphere

c)

Mesosphere

d)

Exosphere