The Ozone Layer
Flashcard
•
Science
•
9th - 12th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is the stratosphere?
Back
The second layer of the atmosphere, extending about 17-48 kilometers above the earth’s surface, containing a layer of gaseous ozone that filters out about 95% of harmful ultraviolet radiation.
2.
FLASHCARD QUESTION
Front
What is the troposphere?
Back
The innermost layer of the atmosphere, containing about 75% of the mass of earth’s air, extending about 17 kilometers above sea level.
3.
FLASHCARD QUESTION
Front
How many ozone atoms can a single chlorine atom break down?
Back
100,000
4.
FLASHCARD QUESTION
Front
What was the purpose of the Montreal Protocol?
Back
To ban the use of CFCs in order to make the ozone hole smaller.
5.
FLASHCARD QUESTION
Front
What does the ozone layer protect us from?
Back
Harmful UV rays from the sun.
6.
FLASHCARD QUESTION
Front
What are CFCs?
Back
Chlorofluorocarbons, chemicals that deplete the ozone layer.
7.
FLASHCARD QUESTION
Front
What is the main function of the ozone layer?
Back
To absorb the majority of the sun's harmful ultraviolet radiation.
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