Key Terms

Question 1

Enhanced greenhouse effect

Answer 1

• inc. amount of greenhouse gases in atmo. as a result of human activities, + their impact of atmospheric systems, inc. global warming

Question 2

Carbon dioxide (CO2)

Answer 2

• slightly soluble in water + denser than air
• greenhouse gas + contributes to global warming

Question 3

Methane

Answer 3

• hydrocarbon gas produced during decomposition of organic material under anaerobic conditions

Question 4

Chlorofluorocarbons (CFCs)

Answer 4

• group of chemicals containing Cl, F, C.

Question 5

Continental drift

Answer 5

• theory that continents have drifted over time across Earth’s surface

Question 6

Pollutant

Answer 6

• substance introduced into envi. that has undesired effects, or exceeds system’s ability to remain unchanged

Question 7

Instability

Answer 7

• caused by low-pressure conditions where air is rising, cools, condenses + forms rain

Question 8

Heat island

Answer 8

• inc. in T°Cs observed around a large town or city