Quiz about Ozone Depletion

Question 1

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

Accepted Answer

Ozone Layer

Answer

Greenhouse Gases

Answer

Troposphere

Answer

Stratosphere

Question 2

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

Accepted Answer

Montreal Protoccol

Answer

Kyoto Protoccol

Answer

Paris Agreement

Answer

Yo MaMa

Question 3

How do CFCs affect ozone production?

Accepted Answer

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

Answer

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

Answer

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

Answer

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

Question 4

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

Accepted Answer

99

Answer

50

Answer

75

Answer

89

Question 5

Which of these sets of three items produce CFCs

Accepted Answer

spray cans, refrigerant, insulation

Answer

cars, factories, and cardboard

Answer

spray cans, cardboard, insulation

Answer

spray cans, refrigerant, cardboard

Question 6

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

Accepted Answer

persist and continue to destroy ozone for decades.

Answer

become harmless quickly.

Answer

destroy ozone for only a short time.

Answer

persist but stop destroying ozone.

Question 7

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

Accepted Answer

ultraviolet radiation

Answer

visible light

Answer

infrared

Answer

gamma rays

Question 8

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

Accepted Answer

UV-C radiation

Answer

UV-A radiation

Answer

UV-B radiation

Answer

UV-A or UV-B radiation

Question 9

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

Accepted Answer

100,000

Answer

5,000

Answer

10,000

Answer

50,000

Question 10

Which is NOT a result of the reduction in stratospheric ozone?

Accepted Answer

increased birth defects

Answer

reduced photosynthetic activity

Answer

increased skin cancer

Answer

increased likelihood of cataracts

Question 11

Through international cooperation, the concentration of chlorine in the atmosphere

Accepted Answer

has stabilized at 5ppb

Answer

has already decreased below 3ppb

Answer

will stabilize around 3ppb by 2030

Answer

is expected to stabilize at 5ppb by 2100

Question 12

When is the ozone hole largest?

Accepted Answer

early Antarctic spring

Answer

late Antarctic summer

Answer

early Antarctic winter

Answer

late Antarctic fall

Question 13

Which chemical that replaced CFCs in refrigerants is now a concern as a major greenhouse gas?

Accepted Answer

HFCs

Answer

CFCs

Answer

DDT

Answer

CFCl2

Question 14

Which is not an example of an ecological consequence of reduced stratospheric ozone?

Accepted Answer

reduced crop yield

Answer

loss of biodiversity from reduced photosynthesis in plants

Answer

collapse of marine food webs

Answer

reduced terrestrial biome productivity

Question 15

UV rays can cause obvious short term damage, such as sunburn, as well as long term damage that accumulates with each exposure to the sun.

Accepted Answer

True

Answer

False

Question 16

Which statement regarding the decreased level of stratospheric ozone is correct?

Accepted Answer

The largest decrease in the level of stratospheric ozone over the Arctic region occurs between January and April

Answer

Increased photosynthetic activity has been measured in the phytoplankton around Antarctica

Answer

Although the Montreal Protocol led to a reduction in the use of CFCs, it will have little effect on stratospheric ozone levels in the long term

Answer

There is no correlation between the incidence of cataracts and skin cancers and the lower level so stratospheric ozone

Answer

The global crop yields of wheat, rice, and corn have increased since the reduction in CFC use

Question 17

Which is most strongly absorbed by ozone in the statosphere?

Accepted Answer

UV-B

Answer

UV-A

Answer

UV-C

Answer

UV-B and UV-C

Answer

UV-A and UV-B

Question 18

Location of the large whole in the ozone.

Accepted Answer

Antarctica

Answer

Artic

Answer

Iceland

Answer

Africa

Ozone Depletion

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