AnswersSC332 Environmental Science BOzone

Ozone Answers

0 verified answers1 views
1
Free Preview

Ozone is formed when _______.

A
two oxygen molecules combine
B
an individual oxygen atom combines with an oxygen molecule
C
ultraviolet radiation breaks apart four oxygen molecules
D
oxygen molecules are broken into separate atoms
2
Free Preview

Which of the following is an ozone depleting substance (ODS)?

A
ultraviolet radiation
B
chlorofluorocarbon (CFC)
C
biogeochemical cycle
D
none of the above
3

Why are small quantities of chlorofluorocarbons so harmful to the ozone layer?

A
The chlorofluorocarbons act like ultraviolet radiation causing large amount of ozone to be produced.
B
The chlorine from the chlorofluorocarbons reacts with free molecules of oxygen causing a stop in ozone production.
C
Free oxygen atoms can replace the chlorine in chlorine monoxide, releasing a free atom of chlorine which can then recombine with an oxygen atom in ozone, destroying more ozone.
D
Chlorofluorocarbons absorb ultraviolet radiation, preventing the formation of ozone.
4

How do chlorofluorocarbons (CFCs) contribute to ozone depletion?

A
chlorine atom (Cl) breaks apart the ozone molecule
B
CFCs build up and block the filtering effects of the ozone layer
C
chlorine atom (Cl) bonds to the ozone molecule and changes its chemical properties
D
breaks off an oxygen atom (O) and attaches it to a hydroxide ion (OH) to form water
5

The environmental and health risks associated with ground-level ozone are greater than the environmental and health risks associated with the depletion of the ozone layer.

A
T
B
F
6

How are individual atoms of oxygen formed in the stratosphere?

A
Individual oxygen atoms are formed when oxygen molecules collide with each other.
B
Individual oxygen atoms are formed in the sun.
C
Individual oxygen atoms are formed during photosynthesis.
D
Individual oxygen atoms are formed when UV rays strike oxygen molecules.
7

The troposphere contains 90% of the ozone in the atmosphere.

A
T
B
F
8

Depletion to the ozone layer can cause changes to the biogeochemical cycles.

A
T
B
F
9

Over 95% of incoming UV-B radiation is absorbed in the stratosphere. Please select the best answer from the choices provided

A
T
B
F
10

When is ozone considered a pollutant?

A
in the stratosphere
B
in the mesosphere
C
in the troposphere
D
in the thermosphere
11

The ozone layer helps to sustain terrestrial life by __________.

A
absorbing incoming UV radiation
B
keeping levels of ozone in the troposphere low
C
maintaining the Earth's temperature structure
D
all of the above
12

Which of the following is a possible consequence of ozone layer depletion on living organisms?

A
increased exposure to ground-level ozone
B
decreased levels of ultraviolet radiation in the troposphere
C
increased levels of ultraviolet radiation absorption in the stratosphere
D
none of the above
13

Which of the following is a health risk associated with ground-level ozone?

A
cataracts
B
skin cancer
C
respiratory illness
D
all of the above

Did you find these answers helpful?

More from this Course

Quiz
16 verified answers

Global Change

Quiz
16 verified answers

Ozone

Quiz
16 verified answers

Air Quality