| A | B |
|---|
| state of the atmosphere at a given time and place | weather |
| layer of the atmosphere in which weather occurs | trophosphere |
| driving force behind movement of atmopshere | sun |
| how heat is transferred through the atmosphere | convection |
| maritime air mass | humid |
| polar air mass | cold |
| tropical air mass | warm |
| continental air mass | dry |
| lowest latitude | equator |
| highest latitude | poles |
| boundary between two different air masses | front |
| warm, rising air | low pressure |
| cool, sinking air | high pressure |
| direction of circulation around a low pressure system | counterclockwise |
| largest storms on Earth | hurricanes |
| storm with fastest winds | tornadoes |
| a large electrical discharge | lightning |
| prediction of future weather | forecast |
