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Quiz on unit 2

Total questions: 25

Worksheet time: 25mins

Name
Class
Date
1.

Which layer is above the Stratosphere?

a)

Ionosphere

b)

Thermosphere

c)

Troposphere

d)

Mesosphere

2.

What is the outermost layer?

a)

Exosphere

b)

Thermosphere

c)

Ionosphere

d)

Mesosphere

3.

Which layer do airplanes and jet fly in?

a)

Mesosphere

b)

Stratosphere

c)

Thermosphere

d)

Troposphere

4.

Which layer consists of a large amount of ions and free electrons?

a)

Troposphere

b)

Mesosphere

c)

Ionosphere

d)

Exosphere

5.

Which is true about the Mesosphere?

a)

Home to the northern lights

b)

Lowest layer of the atmosphere

c)

Second layer of the atmosphere

d)

Burns up most asteroids before they reach Earth

6.

Which layer lies at the top of the Mesosphere and the bottom of the Thermosphere

a)

Mesosphere

b)

Troposphere

c)

Ionosphere

d)

Thermosphere

7.
Where we live.
a)
stratosphere
b)
thermosphere
c)
troposphere
d)
mesosphere
8.
Where satellites orbit.
a)
troposphere
b)
thermosphere
c)
exosphere
d)
mesosphere
9.
What is the function of the ozone layer?
a)
to allow UV rays to get to Earth
b)
to block UV rays from getting to Earth
c)
To keep oxygen in
d)
to allow meteors to get to Earth
10.
The coldest layer of the atmosphere is the ________.
a)
Mesosphere
b)
Thermosphere
c)
Stratosphere
d)
Troposphere
11.
The layer of the atmosphere with the greatest air pressure is the ____________.
a)
Troposphere
b)
Stratosphere
c)
Mesosphere
d)
Exosphere
12.
Even though the air is very thin, the hottest layer is the __________.
a)
Exosphere
b)
Mesosphere
c)
Troposphere
d)
Thermosphere
13.
As distance from Earth increases, air pressure ___________.
a)
decreases
b)
increases
c)
stays the same
d)
none of the above
14.

Which of the following would be the best description of the atmosphere?

a)

A mixture of gases in space

b)

Where airplanes fly

c)

Layers of moisture that surround the Earth

d)

Layers of gases that surround the Earth

15.

In which layer of the atmosphere does MOST of Earth’s weather occur?

a)

the exosphere, which is the outermost layer

b)

the troposphere, which is the lowest layer

c)

the thermosphere, which has the highest temperature

d)

the stratosphere, which contains a sub-layer of ozone

16.

An atmospheric layer of a specific gas provides shielding from harmful ultraviolet light from the Sun, allowing life to thrive on Earth. What gas makes up this layer?

a)

H2 0H_{2\ }0

b)

CO2CO_2

c)

O3O_3

17.

Layer of the atmosphere where auroras occur.

a)

Troposphere

b)

Stratosphere

c)

Mesosphere

d)

Thermosphere

e)

Exosphere

18.

Layer furthest from Earth.

a)

Troposphere

b)

Stratosphere

c)

Mesosphere

d)

Thermosphere

19.

Layer responsible for radio communication.

a)

Troposphere

b)

Stratosphere

c)

Mesosphere

d)

Thermosphere

e)

Exosphere

20.
The higher you go, the air becomes.......
a)
More dense
b)
Less dense 
21.
What absorbs ultraviolet rays in the atmosphere?
a)
troposphere
b)
stratosphere
c)
ozone layer
d)
greenhouse gases
22.

How many oxygen atoms does a molecule of ozone contain?

a)

1

b)

2

c)

3

d)

4

23.

What chemical is responsible for breaking up the ozone?

a)

CFCs

b)

Carbon Dioxide

c)

Nitrogen

d)

Oxygen

24.

The greenhouse effect is caused by

a)

more heat arriving at the Earth from the sun

b)

the Earth releasing more heat at night

c)

gases in the air trapping heat released by the Earth

25.

Which of the gases is NOT a greenhouse gas?

a)

water vapour

b)

carbon monoxide

c)

carbon dioxide

d)

methane

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