| A | B |
|---|
| Atmosphere | A thin layer of gases surrounding Earth |
| Water vapor | Water in its gaseous form |
| Condensation | The process of a gas changing to a liquid |
| Evaporation | The process of a liquid changing to a gas |
| Water cycle | The series of natural processes by which water continually moves throughout the hydrosphere |
| Wind | The movement of air from areas of high pressure to areas of low pressure |
| Weather | The atmospheric conditions, along with short-term changes, of a certain place at a certain time |
| Air pressure | The force that a column of air applies on the air or a surface below it |
| Radiation | Energy carried by electromagnetic waves including visible light, ultraviolet light, and infrared light |
| Conduction | The transfer of thermal energy due to collisions between particles |
| Convection | The circulation of particles within a material caused by differences in thermal energy and density |
| Greenhouse effect | The natural process that occurs when certain gases in the atmosphere absorb and reradiate thermal energy from the sun |
| Climate | The long-term average weather conditions that occur in a particular region |
| Climate change | A change in global or regional climate patterns attributed largely to the increased levels of atmospheric carbon dioxide produced by the use of fossil fuels |
| Greenhouse gas | A gas in the atmosphere that absorbs Earth’s outgoing thermal energy |
