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Weather part 1 vocab
| Question | Answer |
|---|---|
| Air pressure | the measure of the force with which air molecules push on a surface. |
| Mesosphere | middle layer of atmosphere;51-85 km;coldest layer;this is where meteors burn up. |
| 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 of ozone layer;absorbs by 95% of Ultraviolet radiation;temperature increases with altitude increase |
| Thermosphere | the fourth layer of the atmosphere,in which temperature increases altitude increases |
| Exosphere | the outer layer of the thermosphere,extending outward into space |
| Atmosphere Gases | nitrogen 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 the Earth's atmosphere.It passes Into the bloodstream and 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 exits in very small quantities in the atmosphere ; gases make up less than 1% of Earth's atmosphere |
| Water Vapor | water in the form of gas |
| Fossil Fuels | a natural substance formed from 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 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 of the sun |
| Greenhouse Effect | 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. |