Air Pollution, Climate Change and Ozone Depletion

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

• visible light
• ultraviolet radiation
• infrared
• gamma rays

The ozone layer protects us from

• UV rays
• CFCs
• Increased atmospheric heat
• Decreased atmospheric heat

The ozone layer is damaged by

• CFCs
• Increase in greenhouse gases
• Increased global temperatures
• Sulfuric and nitric acids

Increase in which gas is primarily responsible for increased global warming?

• Carbon dioxide
• Water vapor
• Methane
• Nitric oxides

What absorbs ultraviolet rays in the atmosphere?

• troposphere
• stratosphere
• ozone layer
• greenhouse gases

The gas that is most abundant in the atmosphere is

• oxygen
• nitrogen
• carbon dioxide
• argon

CFCs alter the natural formation of ozone by: 

• breaking up ozone and reducing the amount of O2 needed to form ozone
• bonding with O3 
• preventing UV radiation to strike ozone 

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

• 50
• 75
• 89
• 99

Choose the correct order of the layers of the atmosphere (from closest to farthest from earth’s surface). 

• a)Troposphere, mesosphere, stratosphere, thermosphere 
• a)Thermosphere, mesosphere, stratosphere, thermosphere 
• a)Troposphere, stratosphere, mesosphere, thermosphere 
• a)Stratosphere, troposphere, mesosphere, thermosphere 

Which of these sets of three items produce CFCs

• cars, factories, and cardboard
• spray cans, cardboard, insulation
• spray cans, refrigerant, cardboard
• spray cans, refrigerant, insulation