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Composition of the Atmosphere

Total questions: 55

Worksheet time: 46mins

Name
Class
Date
1.

Which gas makes up the largest component of the Earth’s atmosphere?

a)

argon (Ar)

b)

oxygen (O2)

c)

nitrogen (N2)

d)

carbon dioxide (CO2)

2.

Which of Earth’s spheres is composed primarily of gases?

a)

the Atmosphere

b)

the Asthenosphere

c)

the Hydrosphere

d)

the Biosphere

3.
What is the percentage of oxygen in Earth's atmosphere?
a)
1%
b)
21%
c)
78%
d)
90%
4.
What is the percentage of nitrogen in Earth's atmosphere?
a)
1%
b)
21%
c)
78%
d)
90%
5.
What are the 2 most abundant gases in Earth's atmosphere?
a)
carbon dioxide and oxygen
b)
carbon dioxide and nitrogen
c)
nitrogen and oxygen
d)
nitrogen and hydrogen 
6.

The upper limit of the atmosphere is at a height of about ________ km from the mean sea level.

a)

1500 km

b)

1000 km

c)

10,000 km

7.

Heavier gases are found in this layer.

a)

troposphere

b)

mesosphere

c)

thermosphere

8.

Global warming is a result of increase in __________ gases like __________.

a)

useful gases, oxygen

b)

greenhouse, carbon-di-oxide

c)

greenhouse, nitrogen

9.

Water vapour and dust particles are found only in this layer.

a)

stratosphere

b)

mesosphere

c)

troposphere

10.

All weather phenomena occur in this layer.

a)

troposphere

b)

stratosphere

c)

mesosphere

11.

This is the coldest layer.

a)

thermosphere

b)

exosphere

c)

mesosphere

12.

This gas protects from harmful ultraviolet rays of the sun.

a)

carbon-di0oxide

b)

nitrogen

c)

ozone

13.

Ozonosphere is located in this layer.

a)

troposphere

b)

stratosphere

c)

mesosphere

14.

What does Atmosphere not consist of?

a)

methane

b)

Water vapor

c)

carbon dioxide

d)

Helium

15.

Which gas is causing most harm to Atmosphere

a)

Freon

b)

CO2

c)

Sulfur dioxide

d)

Vapor

16.

Destruction of atmosphere is leading ________Of temp

a)

Increase

b)

Decrease

c)

No effect

17.

The standard sea-level atmospheric pressure is ________ millibars.

a)

1013

b)

29.92

c)

14.7

d)

0 (zero)

18.

What is the relationship between atmospheric pressure and altitude above sea level?

a)

Atmospheric pressure decreases with increasing altitude.

b)

Atmospheric pressure increases with increasing altitude.

c)

Atmospheric pressure is not affected by increasing altitude.

19.

Which layer of the atmosphere has no well-defined upper limit?

a)

the Thermosphere

b)

the Troposphere

c)

the Mesosphere

d)

the Stratosphere

20.

Which of the following are major variable components of the atmosphere? CHOOSE ALL THAT APPLY!

a)

water vapor

b)

aerosols

c)

carbon dioxide

d)

oxygen gas

21.

Which of the following is an example of a natural atmospheric aerosol in the atmosphere?

a)

dust storms

b)

smog pollutants

c)

emissions from manufacturing

d)

emissions from transportation

22.

Which layer has the coldest average temperature?

a)

Troposphere

b)

Stratosphere

c)

Mesosphere

d)

Thermosphere

23.

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.

24.

Generally, as altitude increases, temperature ___.

a)

Increases

b)

Decreases

c)

Fluctuates

d)

Stays constant (the same)

25.

Which layer of the atmosphere has the highest density of gas molecules?

a)

Exosphere

b)

Mesosphere

c)

Stratosphere

d)

Thermosphere

e)

Troposphere

26.

In which atmosphere layer of Earth do thunderstorms occur?

a)

thermosphere

b)

mesosphere

c)

stratosphere

d)

troposphere

27.

Which is associated with an increase of chlorofluorocarbons in the environment?

a)

an increase in health risks with UV radiation.

b)

an increase in levels of methane gas in the atmosphere

c)

an increase in ozone levels in the upper atmosphere

d)

an increase in acid precipitation.

28.
This chemical is found in aerosols, it is linked to damaging the ozone layer.
a)
CFC's
b)
CDC's 
c)
CBC's
d)
CEC's
29.

This is the second most abundant (plentiful) gas in our atmosphere.

a)

Nitrogen

b)

Oxygen

c)

Argon

d)

Carbon Dioxide

30.

Hurricanes are a very strong type of __________.

a)

tornado

b)

blizzard

c)

tropical storm

d)

tsunami

31.

Select 2 other names for a hurricane.

a)

typhoon

b)

cyclone

c)

blizzard

d)

earthquake

32.

At what speed does a tropical storm become a hurricane?

a)

129 mph

b)

74 mph

c)

156 mph

d)

130 mph

33.

The most dangerous type of hurricane has a score of __________.

a)

Category 1

b)

Category 3

c)

Category 5

d)

Category 4

34.

Hurricanes usually occur between the months of __________.

a)

January and March

b)

April and June

c)

November and January

d)

June and November

35.

In the northern hemisphere of the earth hurricanes circle __________.

a)

clockwise

b)

counter-clockwise

c)

up and down

d)

front to back

36.

The center of the hurricane is called the __________.

a)

bullseye

b)

point

c)

nose

d)

eye

37.

The sea water that starts a hurricane gets warm from ________________.

a)

volcanoes

b)

the moon

c)

lightning

d)

the sun

38.

Earth's atmosphere is mainly composed of which gases?

a)

hydrogen, helium, oxygen, and argon

b)

nitrogen, oxygen, argon, and carbon dioxide

c)

nitrogen, hydrogen, argon, and carbon dioxide

d)

helium, hydrogen, oxygen, and carbon dioxide

39.

Air pressure is

a)

How much air there is in the atmosphere

b)

The weight of air pressing on a given space

c)

The percent of oxygen in the air

d)

The movement of air in a given space

40.

The troposphere is the densest layer of the atmosphere because of

a)

Earth's gravity pulling the air molecules down towards Earth.

b)

Because of the sun's energy force

c)

Because of all the pollution on Earth

d)

Because of all the people on Earth

41.

Which of the following are greenhouse gases?

a)

Carbon dioxide

b)

Methane

c)

Water vapor

d)

All answers are correct

42.

From the information in the graph we can say that:

a)

power stations produce about 1.5 times the emission of residential activities

b)

residential activities produces about the same amount of emissions as waste disposal

c)

fossil fuel retrieval produces more emission than transportation of fuels

d)

industrial process produce about 5 times the emissions of waste disposal & treatment

43.

The highest gaseous pollutant is

a)

methane

b)

nitrous oxide

c)

carbon dioxide

d)

fluorinated gases

44.
Over the past 200 years, the level of carbon dioxide in the atmosphere has
a)
decreased slightly.   
b)
increased until recently, and then decreased.
c)
increased steadily.   
d)
stayed about the same.
45.
Which layer in the atmosphere protects us form harmful UV radiation?
a)
Ozone
b)
Troposphere
c)
Ionosphere
d)
Exosphere
46.

Cutting down large forests (deforestation) can result in:

a)

little to no changes

b)

more homes for animals

c)

less plants to absorb carbon dioxide, a greenhouse gas

47.
Melting of glaciers and polar ice caps....
a)
will result in cooler temperatures in the Arctic
b)
will result in sea-levels rising
c)
Will have no effect on ecosystems
d)
None of the above
48.
1.  Why is the Ozone important to life on Earth?
a)
A.   The Ozone reflects all the Ultra Violet radiation
b)
A.  The Ozone absorbs all the heat that come up from the Earth.
c)
The Ozone provides all the oxygen to Earth.
d)
The Ozone protects the Earth’ s atmosphere and the life on Earth from harmful radiant energy emitted by the sun   
49.

Along with carbon dioxide and methane, ___________ is a potent greenhouse gas.

a)

vapour

b)

water

c)

water vapour

50.

The rate at which the temperature drops in the ______________ is 1°C per 165 metres.

a)

troposphere

b)

stratosphere

c)

mesosphere

51.

The______________ is the layer of the atmosphere that helps in radio transmission.

a)

troposphere

b)

ionosphere

c)

stratosphere

52.

The upper part of the thermosphere is called the ______________.

a)

stratosphere

b)

troposphere

c)

ionosphere

53.

The rate at which the temperature drops in the troposphere is called

a)

lapse rate

b)

loss rate

c)

less rate

54.

This layer of the atmosphere has the lowest temperature.

a)

mesosphere

b)

thermosphere

c)

tropopause

55.

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.

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