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22 Cards in this Set
- Front
- Back
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How many layers are in the atmosphere? |
four layers |
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What are the 4 most common gases in dry air? |
1. Nitrogen 2. Oxygen 3. Carbon Dioxide 4. Argon |
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Name 2 natural and 2 artificial sources of particles in the the atmosphere? |
natural 1. salt from ocean 2. Mold and Pollen artificial 1. burn fuels 2. construction and farming |
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photochemical smog is caused by the action of what hitting chemicals in the air? |
sunlight |
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what unit of measurement, measures air pressure? |
inches and millibars |
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what percent pf the atmosphere is oxygen? |
21% |
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what happens to the air pressure when the density decreases? |
less air pressure |
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what do you call harmful thing in the air, water, or soil? |
pollution |
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what is the most abundant gas in the atmosphere? |
nitrogen |
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The four main layers of the atmosphere are divided according to what? |
classified by temperature |
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Bits of carbon that enter the air when burning wood or coal |
soot |
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burning coal with sulfur can cause what? |
Acid Rain |
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warmest layer of atmosphere? |
Thermostphere |
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what layer of the atmosphere reflects radio waves? |
Ionosphere (thermosphere) |
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What layer of the atmosphere contains weather? |
Troposphere |
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Which layer protects earth from meteoroids? |
Mesosphere |
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Which gas varies between 0 and 5% |
Water Vapor |
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The amount of mass in a given volume is called what? |
Density |
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What is the force per unit area? |
Pressure |
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the Aurora Borealis occurs in what layer of the atmosphere? |
Ionosphere (thermosphere) |
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what layer of the atmosphere do satellites orbit in? |
Exosphere |
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The condition of earths atmosphere at a particular time and place? |
weather |
