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WorksheetsE101 - Earth's Atmosphere
Total questions: 26
Worksheet time: 13mins
Name
Class
Date
1.
Which layer of the atmosphere is characterized by high temperatures and the presence of the ionosphere?
a)
Thermosphere
b)
Mesosphere
c)
Stratosphere
d)
Troposphere
2.
Why does the sky appear blue during the day?
a)
The sunlight is scattered by tiny particles in the air
b)
The sunlight is reflected by the Earth's surface
c)
The sunlight is absorbed by the Earth's atmosphere
d)
The sunlight is absorbed by the Earth's surface
3.
What is the main reason for the healing of the ozone layer?
a)
Increase in volcanic eruptions
b)
Decrease in volcanic eruptions
c)
Increase in human activities
d)
Decrease in human activities
4.
Which layer of the atmosphere contains the ozone layer?
a)
Thermosphere
b)
Mesosphere
c)
Stratosphere
d)
Troposphere
5.
What is the main reason for the thinning of the ozone layer?
a)
Carbon dioxide
b)
Methane
c)
Greenhouse Gases
d)
CFCs
6.
What is the importance of the ozone layer in maintaining a habitable environment on Earth?
a)
It absorbs carbon dioxide from the atmosphere
b)
It regulates the temperature of the Earth
c)
It protects the Earth from harmful radiation
d)
It produces oxygen for living organisms
7.
What is the role of the ozone layer in protecting Earth from harmful UV radiation?
a)
It absorbs and traps UV radiation in the atmosphere
b)
It absorbs and deflects CFCs back into space
c)
It absorbs and deflects UV radiation back into space
d)
It absorbs and releases UV radiation into the atmosphere
8.
What is the main reason for the increase in oxygen levels in the Earth's atmosphere?
a)
Photosynthesis by early organisms
b)
Volcanic eruptions
c)
Human activities
d)
Meteors
9.
Which layer of the atmosphere is the middle layer where meteors burn up upon entry?
a)
Stratosphere
b)
Thermosphere
c)
Mesosphere
d)
Troposphere
10.
What is the main reason why the sky appears red at night?
a)
The sunlight has to pass through more of the Earth's atmosphere
b)
The sunlight is reflected by the Earth's surface
c)
The sunlight is absorbed by the Earth's atmosphere
d)
The sunlight is more directly overhead
11.
What is the main reason for the ban of CFCs?
a)
They are not effective in refrigeration
b)
They are harmful to human health
c)
They are harmful to the environment
d)
They are expensive to produce
12.
What is the main source of harmful UV radiation that the ozone layer protects us from?
a)
Volcanic eruptions
b)
Human activities
c)
The Sun
d)
Meteors
13.
What is the composition of Earth's atmosphere?
a)
78% oxygen, 21% nitrogen, 0.9% argon, 0.04% carbon dioxide
b)
78% nitrogen, 21% oxygen, 0.9% argon, 0.04% carbon dioxide
c)
78% nitrogen, 21% oxygen, 0.9% carbon dioxide, 0.04% argon
d)
78% oxygen, 21% nitrogen, 0.9% carbon dioxide, 0.04% argon
14.
Which layer of the atmosphere is the lowest layer where weather occurs and we live?
a)
Mesosphere
b)
Stratosphere
c)
Thermosphere
d)
Troposphere
15.
What is the main reason for the decrease in carbon dioxide levels in the Earth's atmosphere?
a)
Photosynthesis by early organisms
b)
Human activities
c)
Meteors
d)
Volcanic eruptions
16.
Which layer of the atmosphere contains the majority of Earth's atmospheric gases?
a)
Troposphere
b)
Stratosphere
c)
Mesosphere
d)
Thermosphere
17.
Which layer of the atmosphere is the outermost layer and gradually transitions into space?
a)
Mesosphere
b)
Stratosphere
c)
Exosphere
d)
Troposphere
18.
When did the atmosphere start to form?
a)
Around 2.5 million years ago
b)
Around 4.5 billion years ago
c)
Around 4.5 million years ago
d)
Around 2.5 billion years ago
19.
What is the role of greenhouse gases in the Earth's atmosphere?
a)
To reflect solar radiation
b)
To absorb and re-emit heat
c)
To trap heat in the Earth's core
d)
To decrease Earth's temperature
20.
Which of the following is NOT a key player in the greenhouse effect?
a)
Solar radiation
b)
Carbon dioxide
c)
Greenhouse gases
d)
Ozone layer
21.
What is the relationship between the greenhouse effect and Earth's habitable temperature range?
a)
The greenhouse effect makes Earth too hot for life
b)
The greenhouse effect has no impact on Earth's temperature
c)
The greenhouse effect makes Earth too cold for life
d)
The greenhouse effect maintains Earth's habitable temperature range
22.
Which of the following is NOT a consequence of global warming?
a)
Increased frequency of extreme weather events
b)
Decreased levels of carbon dioxide in the atmosphere
c)
Melting of polar ice caps
d)
Rising sea levels
23.
What is the role of energy balance in maintaining Earth's temperature?
a)
To trap heat in the atmosphere
b)
To reflect solar radiation
c)
To absorb solar radiation
d)
To maintain a stable temperature range
24.
Which of the following is NOT a greenhouse gas?
a)
Carbon dioxide
b)
Water vapor
c)
Methane
d)
Nitrogen
25.
What is the primary source of energy for the Earth's climate system?
a)
Wind
b)
Nuclear energy
c)
Solar radiation
d)
Geothermal energy
26.
Which of the following is NOT a strategy for mitigating the effects of the greenhouse effect?
a)
Increasing fossil fuel use
b)
Reducing greenhouse gas emissions
c)
Promoting renewable energy sources
d)
Implementing adaptation measures
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