| A | B |
|---|
| Evaporation | the process in which matter changes from a liquid to a gas |
| Condensation | Process where matter changes from a gas to a liquid |
| Troposphere | lowest layer of the atmosphere, where weather occurs |
| Thermosphere | Warmest layer, where northern lights occur |
| Stratosphere | 2nd layer from Earth, Airliners fly here, Ozone Layer is here |
| Precipitation | Water that is released from the sky in the form of rain, sleet, snow, hail, and freezing rain |
| Ozone layer | Blocks harmful UV rays from the sun and is partially responsible for warming the Earth |
| Humidity | measure of how much water vapor is in the air |
| Relative Humidity | Percentage of gaseous water in the air compared to the maximum amount it can hold |
| Air Pressure | the force that a column of air puts on an area |
