15 terms

Air Composition & Characteristics

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Atmosphere
The blanket of air that surrounds the Earth.
Nitrogen
The most abundant gas in the atmosphere
Oxygen
The second most abundant gas in our atmosphere, that makes up 21% of the atmosphere
Humidity, Temperature, Air Pressure, Altitude
What are the 4 characteristics of air that influence weather?
Because it contains molecules
Why does air have mass?
Water Vapor
Water that is in the form of a gas
Air pressure
What is the force of air molecules pushing on an area?
Density
What is the amount of mass in a given volume of air?
Higher Density=Higher Air Pressure
How is density related to air pressure?
Altitude
The height above sea level
Air pressure decreases
When altitude increases what happens to air pressure?
O3
What is the chemical formula for ozone?
CFC's
What chemical prevents ozone from forming?
Air
What is a mixture of elements and compounds in the gas phase?
Absorbs ultraviolet light and protects living things
Why is the ozone layer important?
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