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1 Ozone Depletion and Refrigerant Environmental Impacts Online Quiz Questions

Use this free practice quiz with 20 questions to review 1 Ozone Depletion and Refrigerant Environmental Impacts, test your knowledge, and prepare for your next test or exam.

20 questions

Choose one

1 point

A refrigerant is an HFC with a high global-warming potential. Which assessment best describes its environmental effects?

A
It depletes ozone but has no climate impact.
B
It avoids ozone depletion but may have a substantial climate impact.
C
It avoids both ozone depletion and climate impact.
D
It depletes ozone only if it is used in refrigeration.

True or false

1 point

In the simplified chlorine cycle, chlorine is regenerated after reacting with ozone, so the same chlorine atom can help destroy ozone in repeated cycles.

A
True
B
False

Fill in the blank

1 point

The ozone-depletion potential (ODP) of a chemical is compared with that of , which is assigned an ODP of 1.

Written response

1 point

What term names the seasonal region of unusually low ozone that develops especially over Antarctica?

Choose all

1 point

Which statements correctly describe how refrigerant systems can affect climate? Select all that apply.

A
A refrigerant leak can cause direct climate impacts.
B
Only ozone-depleting refrigerants can contribute to climate change.
C
The electricity used to operate the equipment can cause indirect climate impacts.
D
Preventing leaks can reduce direct refrigerant emissions.

Choose one

1 point

Which statement best distinguishes HCFCs from CFCs and HFCs?

A
HCFCs contain no chlorine and therefore cannot deplete ozone.
B
HCFCs are bromine-containing chemicals used mainly in fire suppression.
C
HCFCs can deplete ozone, though generally less per unit mass than CFC-11.
D
HCFCs are natural refrigerants that have no environmental trade-offs.

Fill in the blank

1 point

Because chlorine is regenerated rather than used up in the simplified ozone-destruction cycle, it acts as a .

True or false

1 point

Ozone near the ground has the same protective role as stratospheric ozone and shields life from harmful UV-B radiation.

A
True
B
False

Written response

1 point

Which type of ultraviolet radiation does stratospheric ozone absorb much of?

Choose one

1 point

Why can ozone loss become especially rapid in the Antarctic spring?

A
Warm polar air prevents chlorine from reaching the stratosphere.
B
Reactions on polar stratospheric cloud particles create chlorine forms that sunlight can activate.
C
HFCs release bromine when polar temperatures fall.
D
Ground-level ozone rises and forms a literal opening in the atmosphere.

Choose all

1 point

If stratospheric ozone declines and more UV-B reaches the surface, which effects are supported? Select all that apply.

A
It can raise risks of skin damage and skin cancer.
B
It can increase the risk of cataracts.
C
It guarantees identical effects at every location, regardless of local conditions.
D
It can affect plants, some marine organisms, and materials such as plastics.

Open ended

1 point

A facility is choosing a refrigerant for new equipment. Explain how it should compare the ozone and climate impacts of candidate refrigerants, and identify other factors that could affect the choice.

Choose one

1 point

A building manager wants to reduce both the electricity-related and leakage-related climate impacts of a refrigeration system. Which action best addresses both?

A
Choose efficient equipment and prevent refrigerant leaks.
B
Choose only by ODP and ignore electricity use and leakage.
C
Allow refrigerant to escape so less electricity is needed.
D
Assume that any refrigerant with no ozone impact has no climate impact.

True or false

1 point

Even after international action reduces the production and use of many ozone-depleting substances, ozone recovery can take decades, and conditions can still cause large ozone holes from one year to another.

A
True
B
False

Written response

1 point

Stratospheric ozone is found roughly $15\text{–}35\,\text{km}$ above Earth. What is the midpoint of this altitude range? Enter your answer in kilometres.

Choose one

1 point

Why can many ozone-depleting substances release chlorine or bromine in the stratosphere rather than being destroyed in the lower atmosphere?

A
They react immediately near the ground, so they cannot reach the stratosphere.
B
They persist in the lower atmosphere, then ultraviolet light in the stratosphere releases reactive chlorine or bromine.
C
They absorb UV-B near Earth’s surface and transform directly into ozone.
D
They remove oxygen from the atmosphere before reaching the stratosphere.

Choose one

1 point

A refrigerant has a low ozone-depletion potential but a high global-warming potential. Which interpretation correctly distinguishes these two measures?

A
ODP measures heat trapping relative to carbon dioxide, while GWP measures ozone loss relative to CFC-11.
B
ODP and GWP both measure ozone loss, but over different time periods.
C
ODP compares ozone depletion with CFC-11, while GWP compares heat trapping with carbon dioxide.
D
ODP measures the quantity of refrigerant leaked, while GWP measures equipment efficiency.

Choose one

1 point

If stratospheric ozone declines and other conditions are unchanged, which outcome is consistent with the effects described in the material?

A
More UV-B can reach the surface, raising risks such as skin damage and cataracts.
B
Less UV-B can reach the surface, reducing risks to people and ecosystems.
C
More visible light can reach the surface, directly eliminating cataract risk.
D
The amount of UV-B at the surface is unaffected by changes in stratospheric ozone.

Choose one

1 point

Which description best explains what the Antarctic ozone hole is?

A
A permanent opening in the atmosphere where no gases are present.
B
A region of increased ozone that forms over the poles each spring.
C
A global decrease in all atmospheric gases caused by ultraviolet light.
D
A seasonal region of unusually low ozone, not a literal hole in the atmosphere.

Written response

1 point

What term describes reactions in which a chlorine or bromine atom helps destroy ozone and is then regenerated to participate in further cycles?

1 Ozone Depletion and Refrigerant Environmental Impacts Online Quiz Questions

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