AP Environmental Practice Exam

Layer of gaseous ozone in the stratosphere that protects life on earth by filtering out most harmful ultraviolet radiation from the sun

• Greenhouse Gases

• Troposphere

• Stratosphere

• Ozone Layer

The breakdown of stratospheric ozone
I. can originate from the emission of chlorofluorocarbons (CFCs).
II. is catalyzed through a free chlorine (Cl) atom.
III. prevents UV rays from reaching the earth’s surface.

• I only

• III only

• I,&II

• I,II,& III

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NGSS.HS-ESS2-4

NGSS.HS-PS4-4

Which agreement allowed for a reduction, and eventual elimination, of CFC production and use?

• Montreal Protoccol

• Kyoto Protoccol

• Paris Agreement

• Yo MaMa

How do CFCs affect ozone production?

• UV radiation frees a chlorine atom, which breaks down ozone.

• Infrared radiation frees a chlorine atom, which breaks down ozone.

• UV radiation frees a fluorine atom, which breaks down ozone.

• Infrared radiation frees a chlorine atom, which breaks down ozone.

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NGSS.HS-PS1-2

Depletion of ozone layer is a concern because it normally absorbs ____% of the sun's UV radiation. 

• 50

• 75

• 89

• 99

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NGSS.HS-PS4-3

NGSS.HS-PS4-4

Which of these sets of three items produce CFCs

• cars, factories, and cardboard

• spray cans, cardboard, insulation

• spray cans, refrigerant, cardboard

• spray cans, refrigerant, insulation

Though CFC production has been curtailed, the threat to upper atmosphericozone continues because CFCs

• become harmless quickly.

• destroy ozone for only a short time.

• persist but stop destroying ozone.

• persist and continue to destroy ozone for decades.

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NGSS.HS-ESS3-4

When oxygen gas in the lower stratosphere is struck by this, it splits, leading to the formation of a ozone molecule.

• visible light

• ultraviolet radiation

• infrared

• gamma rays

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NGSS.HS-PS4-4

The formation of ozone begins when and O2 molecule is split by

• UV-A radiation

• UV-B radiation

• UV-C radiation

• UV-A or UV-B radiation

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NGSS.HS-PS1-2

NGSS.HS-PS1-4

How many ozone atoms can a single chlorine atom break down?

• 5,000

• 10,000

• 50,000

• 100,000

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NGSS.HS-PS1-5