Ozone Flashcards Preview

Environmental Science B > Ozone > Flashcards

Flashcards in Ozone Deck (17)
Loading flashcards...
1
Q

What is ozone

A

atmospheric gas

2
Q

Where is 90% of the ozone located

A

in the stratosphere

3
Q

How high is the ozone above Earth’s surface

A

5 to 30 miles

4
Q

Where is 10% of the ozone located

A

troposphere

5
Q

What are the components of ozone

A

three oxygen molecules

6
Q

How is ozone formed

A

oxygen molecules break apart by sun’s ultarviolet radiation into individual oxygen molecules
individual oxygen molecules combine with oxygen atoms to form ozone

7
Q

Where does ozone form

A

in the straosphere

8
Q

Ozone layer function

A

supports terrestrial life
absorption of harmful radiation (95 +% UV-B filtration)
key role in temperature structure of Earth’s atmosphere
maintenance of global temperature

9
Q

How does the UV-B absorption help

A

protects biological life
maintain air quality
regulate environmental and climatic conditions

10
Q

What causes ozone depletion

A

ozone depleting substances (ODS)
chloroflurocarbons (CFCs)
Halon

11
Q

One chlorine atom can destroy over……ozone molecules

A

100,000

12
Q

What does halon contain

A

Chlorine and/or bromine

halogens that react with oxygen to break down O3

13
Q

CFCs are …….. to the ozone, even in small qualtities

A

destructive

14
Q

Halogens are ……… with oxygen

A

highly reactive

15
Q

Are halogens destructive to the ozone

A

yes

16
Q

What are the health risks of ozone layer depletion

A

skin cancer
cataracts
respiratory illness from ground level ozone

17
Q

What are the environmental risks of ozone depletion

A

impairs photosynthesis in many plant species

altered biogeochemical cycles