Unit 11: Air Pollution, Greenhouse Effect, Climate Change

What does ozone gas in the stratosphere do?

• makes the ozone layer and is harmful

• Makes the ozone layer and protects us from UV radiation

• it is a harmful pollutant and can cause cancer

• It is a primary air pollutant

Visible light reaches Earth’s surface while infrared light is trapped as heat. Which characteristic of Earth’s atmosphere causes this to happen?

• the hole in the ozone
• the greenhouse effect
• atmospheric pressure
• the inversion layer

1.  Which of these could increase average global temperatures? 

• A.  increased use of fossil fuels 
• A.  increased ocean plants 
• A.  decreased carbon dioxide emissions 
• A.  increased numbers of animal species

Which of the following gases, released by animals as a waste product of digestion, can add to global warming?

• Carbon Dioxide
• Methane
• Chlorofluorocarbon
• Nitrogen

Over the past 200 years, the level of carbon dioxide in the atmosphere has

• decreased slightly.   
• increased until recently, and then decreased.
• increased steadily.   
• stayed about the same.

Which of the following are greenhouse gases?

• Carbon dioxide
• Methane
• Water vapor
• All answers are correct

The gas that is most abundant in the atmosphere is

• oxygen
• nitrogen
• carbon dioxide
• argon

Where is the ozone layer located?

• troposphere

• stratosphere

• mesosphere

• thermosphere

Without the Greenhouse Effect the Earth would be

• warm 
• cold
• dead

In which layer of the atmosphere does weather occur?

• Mesosphere
• Thermosphere
• Stratosphere
• Troposphere