Ozone Flashcards
What is ozone
atmospheric gas
Where is 90% of the ozone located
in the stratosphere
How high is the ozone above Earth’s surface
5 to 30 miles
Where is 10% of the ozone located
troposphere
What are the components of ozone
three oxygen molecules
How is ozone formed
oxygen molecules break apart by sun’s ultarviolet radiation into individual oxygen molecules
individual oxygen molecules combine with oxygen atoms to form ozone
Where does ozone form
in the straosphere
Ozone layer function
supports terrestrial life
absorption of harmful radiation (95 +% UV-B filtration)
key role in temperature structure of Earth’s atmosphere
maintenance of global temperature
How does the UV-B absorption help
protects biological life
maintain air quality
regulate environmental and climatic conditions
What causes ozone depletion
ozone depleting substances (ODS)
chloroflurocarbons (CFCs)
Halon
One chlorine atom can destroy over……ozone molecules
100,000
What does halon contain
Chlorine and/or bromine
halogens that react with oxygen to break down O3
CFCs are …….. to the ozone, even in small qualtities
destructive
Halogens are ……… with oxygen
highly reactive
Are halogens destructive to the ozone
yes