| A | B |
|---|
| troposphere | the weather layer |
| stratosphere | the ozone layer |
| ionosphere | layer of charged particles |
| troposphere | temperature decreases with height |
| stratosphere | temperature increases with height |
| ozone layer | aborbs 90% of UV radiation |
| hygrometer | measures humidity in the air |
| thermometer | measures air temperature |
| anenometer | measures wind speed |
| barometer | measures air pressure |
| sun | drives Earth's weather |
| hydrologic cycle | movement of moisture around the Earth |
| temperature gradient | heat motion is always from warm to cold |
| evaporation | change from liquid to a gas |
| weather | state of the atmosphere at any given time |
| climate | the average of weather conditions over a long period of time |
