| A | B |
|---|
| atmosphere | a mixture of gases that surrounds a planet or moon |
| air pressure | the measure of the force with which air molecules push on a surface |
| troposphere | the lowest layer of the atmosphere in which temperatrue decreases at a constant rate as altitude increases |
| stratosphere | the layer of the stmosphere that is above the troposphere that is above the troposphere and in which temperature increases as altitude increases |
| mesosphere | the layer of the atmosphere between the stratosphere and the thermosphere and in which temperature decreases as altutude increases |
| thermosphere | the uppermost layer of the atmosphere in which temperature increases as altitude increases |
| radiation | the transfer of energy as electromagnetic waves |
| thermal conduction | the transfer of energy as heat through a material |
| convection | the transfer of thermal energy by the circulation or movement of a liquid or gas |
| greenhouse effect | the warming of the surface and lower atmosphere of Earth that occurs when water vapor carbon dioxide and other gases absorb and reradiate thermal energy |
| global warming | a gradual increase in average global temperature |
