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7-Sci-Unit3-Atmosphe
7-Sci-Unit3.1-Atomsphere
Term | Definition |
---|---|
atmosphere | often referred to as "air", the mixture of gases that surround Earth |
air pressure | the measure of the force with which particles in the air push on a area of a surface |
troposphere | the lowest level of the atmosphere where life exists and weather occurs |
stratosphere | the second level of the atmosphere, just above the the troposphere where the ozone layer is located |
ozone layer | a thin layer of O3 molecules that protect Earth from harmful radiation from the Sun |
mesosphere | the third layer of the atmosphere, just above the stratosphere characterized by wide ranging temperatures |
thermosphere | the uppermost layer of the atmosphere where satellites orbit and the norther and southern aurous occur |
greenhouse effect | the process by which water vapor and gasses such as CO2 absorb and reflect infrared radiation (heat) from the sun. |