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weather unit part 1

TermDefinition
Mesosphere Middle layer of atmosphere ; 51 - 85km; coldest layer; this is where meteors burn up
Air Pressure The measure of the force with which air molecules push on a surface.
Altitude Elevation (height) above sea level.
Troposphere Lowest layer of Earth's atmosphere; 0-17 km above Earth's surface, site of weather,organisms, contains most atmospheric water vapor.
Stratosphere 2nd layer of atmosphere; extends from 10 to 30 miles up; location ozone.
Thermosphere The fourth layer of the atmosphere, in which temperature increases as altitude increases.
Mesosphere Middle layer of the atmosphere; 51-85 km above Earth's surface; coldest layer,this is where meteors burn up.
Exosphere The outer layer of the thermosphere, extending outward into space.
Atmospheric Gases itrogen makes up 78%, 21% oxygen, and remaining 1% is carbon dioxide, water vapor and other gasses
Nitrogen (N2) Most abundant gas in the atmosphere (78%).
Oxygen (O2) Gas that makes up 21% of the air in Earth's atmosphere. It passes into the bloodstream at the lungs and travels to all body cells.
Carbon Dioxide (CO2) A greenhouse gas: a gas that absorbs and radiates heat.
Trace Gases Gasses such as hydrogen, helium, carbon dioxide and argon that exist in very small quantities in the atmosphere; gases that make up less than 1% of Earth's atmosphere.
Water Vapor Water in the form of a gas.
Fossil Fuels A natural substance formed from the buried remains of ancient organisms that can be used as a source of energy.
Greenhouse Gases Gasses in Earth's atmosphere that trap heat near the surface.
Water Cycle The continuous process by which water moves from Earth's surface to the atmosphere and back.
Evaporation The change of a substance from a liquid to a gas.
Condensation The change from a gas to a liquid.
Precipitation Any form of water that falls from clouds and reaches Earth's surface (rain or snow or hail or sleet or mist).
Transpiration Evaporation of water from the leaves of a plant.
Crystallization The process by which a substance becomes a solid, sort of like freezing.
Surface Runoff Water that flows over land until it reaches lakes, rivers, or other areas.
Groundwater Flow Water that is flowing beneath Earth’s surface.
Dew Water that has condensed on a cool surface overnight from water vapor in the air
Frost Ice formed when water vapor changes directly into ice crystals,
Ozone (O3) Part of Earth's upper atmosphere; it protects people by absorbing harmful rays from the sun.
Greenhouse Affect A warming of Earth's surface and the air above it. It is caused by gasses in the air that trap energy from the Sun.
Created by: user-1574303
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