Layers
Air Pressure and Density
Air Pollution and the Atmosphere
Vocabulary
Other
100
Which layer reflects radio waves back to Earth
Ionosphere
100
What happens to density as altitude increases?
Density of air decreases
100
Where does most air pollution come from?
Burning Fossil Fuels
100
What do we call water in the form of a gas?
water vapor
100
What is the gas that is found in the greatest amount in the atmosphere?
Nitrogen
200
What layer of the atmosphere does weather occur?
Troposphere
200
Why does a person on a mountaintop become out of breath quickly?
Fewer oxygen molecules are present per cubic meter of air
200
What can we do to reduce air pollution?
Use more public transportation
200
What is the layer of gases that surrounds Earth?
Atmosphere
200
What is elevation or the distance above sea level?
Altitude
300
What layer is the ozone layer found in?
Stratosphere
300
What happens to air pressure as you rise upwards in the atmosphere?
Air pressure decreases
300
What is the percentage of nitrogen, oxygen, and other gases in the atmosphere?
78% nitrogen, 21% oxygen, and 1% other gases
300
What is the instrument we use to measure air pressure?
Barometer
300
What is the layer in the thermosphere where satellites orbit?
Exosphere
400
What layers protects us from being hit by meteoroids?
Mesosphere
400
What tool uses a metal chamber that is sensitive to pressure changes?
Aneroid Barometer
400
What provides all the gases that living things need to survive?
The Earth's atmosphere
400
What is the condition of the Earth's atmosphere at a particular time and place?
Weather
400
What is the layer of the atmosphere where people live?
Troposphere
500
What are the layers of the atmosphere from earth to space?
Troposphere, Stratosphere, Mesosphere, Thermosphere, Ionosphere, Exosphere
500
What instrument uses liquid which rises as air pressure increases?
Mercury Barometer
500
What does the ozone layer protect us from?
Ultraviolet Radiation
500
What is a pollutant?
500
What is the layer between the stratosphere and the thermosphere?
Mesosphere
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