Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
Atmospheric layer found at an average altitude of 11 to 50 kilometers above the Earth's surface. Within the __________ exists the ozone layer
3.
Layer in the atmosphere found from the surface to a height of between 8 to 16 kilometers of altitude. Our weather occurs in this layer.
4.
Principal gas within the atmosphere. Has a concentration of 78% by volume within the atmosphere.
6.
Permanent gas with a concentration of 0.934% by volume.
7.
Layer found between the stratosphere and the thermosphere. Average altitude of 50 to 80 kilometers
8.
Found primarily in the troposphere and serve as surfaces upon which water vapor can condense.
9.
Relatively thin atmospheric transition layer found between the troposphere and the stratosphere
10.
Second most plentiful permanent gas in the atmosphere with a concentration of 21% by volume.
11.
Strong greenhouse gas in the atmosphere. Primary natural sources: rice cultivation, domestic grazing animals, termites, landfills, coal mining, and oil and gas extraction.
12.
Most important variable gas in the atmosphere. Varies in concentration from 0-4% by volume. Greenhouse gas.
Down:
2.
Atmospheric layer above the mesosphere (above 80 kilometers) characterized by air temperatures rising rapidly with height. Hottest layer in the atmosphere
5.
Situation where temperature increases with altitude.
6.
Gaseous envelope of air that surrounds the Earth
13.
Gas that helps to protect life from the harmful effects of solar ultraviolet radiation by absorbing it.