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25 Cards in this Set
- Front
- Back
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Air pressure
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weight of air above a given area on Earth’s surface
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Exosphere
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atmospheric layer closest to outer space
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Trace gases
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a gas which makes up less than 1% by volume of the Earth's atmosphere; argon is the most abundant trace gas
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Evaporation
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when water heats up and changes from a liquid to a gas and begins to rise
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Runoff
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when water begins to flow to the lowest possible area
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Greenhouse effect
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a warming of Earth's surface and the air above it. It is caused by gases in the air that trap energy from the sun
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Altitude
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the height of an object or point in relation to sea level or ground level
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Atmospheric gases
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the gases found in the earth’s atmosphere; nitrogen and oxygen are the two major gases
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Water vapor
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water in its gaseous state; can be produced from the evaporation of water
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Condensation
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water cools and turns from a gas into a liquid state as droplets or ice crystals; must form on a surface
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Troposphere
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layer closest to earth’s surface; weather and clouds occur here; temperature decreases as altitude increases
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Nitrogen
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the gas that makes up 78 percent of the earth’s atmosphere
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Fossil fuels
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a natural fuel such as coal or gas, formed in the past from the remains of living things
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Precipitation
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when water droplets fall in various forms
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Dew
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tiny drops of water that form on cool surfaces at night, when water vapor condenses
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Stratosphere
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where the ozone layer is located; has a cold area at the bottom of the layer and a warm area near the ozone layer
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Oxygen
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the second major gas found in the atmosphere
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Greenhouse gases
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gases that trap heat in the atmosphere and make the earth warmer (water vapor, carbon dioxide, methane, ozone, etc.)
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Transpiration
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the evaporation of water from the leaves of plants
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Frost
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condensation that has frozen onto physical surfaces
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Thermosphere
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the fourth and the warmest atmospheric layer; contains the northern lights or the ionosphere
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Carbon dioxide
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a greenhouse gas; plants use carbon dioxide during photosynthesis and humans/cars/factories release carbon dioxide
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Water cycle
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the process by which water circulates between the earth’s bodies of water and the atmosphere; evaporation, condensation, precipitation, and runoff
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Ozone
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a layer of oxygen molecules in the stratosphere that absorbs most of the sun’s harmful ultraviolet radiation
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Mesosphere
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the middle layer of the atmosphere; this is the coldest layer
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