Direction: Match column A to column B.

Column A

1. Ice sheets
2. Mountain glaciers
3. Global Warming
4. Carbon Dioxide
5. Greenhouse gases
6. Infrared energy
7. Greenhouse Effect

Column B

a. Chemicals that contribute to the greenhouse effect by absorbing infrared radiation
b. Permanent layer of ice covering an extensive tract of land, especially a polar region
C. Natural process that warms the earth's surface
d. Extended mass of ice which are formed from snow and slowly moving from
high mountain
e. Electromagnetic radiation that can be felt but cannot be seen
f. A gradual increase in the overall temperature of the earth's atmosphere
g. The trapping of the sun's warmth in a planet's lower atmosphere
h. A colorless, odorless gas produced by burning carbon and organic compounds and
by respiration.​