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WorksheetsOzone Depletion
Total questions: 15
Worksheet time: 8mins
The ozone layer is made of ___________
oxygen
carbon dioxide
hydrogen
nitrogen
Which of the symbols represents ozone?
O2
O3
Cl2
Cl3
In which of the atmospheric layers is the ozone layer found?
Troposphere
Stratosphere
Mesosphere
Thermosphere
Stratosphere is the ___________________
first layer
second layer
third layer
fourth layer
What are "holes" in the ozone layer?
places where the ozone concentrations are higher than under normal conditions, allowing more UV radiation to reach the Earth's surface.
places where the ozone concentrations are higher than under normal conditions, allowing less UV radiation to reach the Earth's surface.
places where the ozone concentrations are lower than under normal conditions, allowing more UV radiation to reach the Earth's surface.
When was the first ozone hole discovered?
1920
1985
1990
2000
What does the ozone layer protect us from?
air pollution
greenhouse gases
ultraviolet rays from the Sun
Sunlight
Harmful ultraviolet radiation can cause
lung diseases
air pollution
skin cancer
skin cancer and eye damage
What do we call the main ozone depleting
chemicals?
CFCs
FFCs
CCFs
Which products contain ozone depleting
substances?
(several correct answers)
Air conditioners
Refrigerators
Ovens
Motorbikes
Aerosol cans
How do CFCs affect the ozone layer?
By increasing the amount of ozone
By reacting with ozone and breaking it down
By releasing carbon dioxide
The ozone layer absorbs ____________ of the Sun's ultraviolet (UV) radiation.
0%
50%
90%
99%
Where is the ozone layer mostly affected?
over the Antarctic
over the Arctic
over the equator
CFCs break down ozone more when it is ______________.
summer
autumn
hot
cold
Although the use of CFCs has been banned, the threat to the upper atmospheric ozone continues because CFCs
become harmless quickly.
persist and continue to destroy ozone for decades.
destroy ozone for only a short time.
persist but stop destroying ozone.
