| A | B |
|---|
| convection currents | formed when air temperatures are different - movement of air |
| troposphere | where most weather happens, the bottom layer of the atmosphere |
| stratosphere | The 2nd lowest layer in the atmosphere, found above the troposphere |
| precipitation | caused by rising warm air at a front, rain is formed |
| severe storm warning | when a severe storm has already formed |
| tornado | a column of wind formed by upward winds and downward winds |
| anemometer | instrument to measure wind speed |
| maritime polar air | cold, moist air found over water |
| continental polar air | cold, dry air found over land |
| maritime tropical air | warm moist air found over water |
| continental tropical air | warm, dry air found over land |
