| A | B |
| air mass | a body of air having the same temperature and air pressure troughtout |
| thunderstorm | a storm that produces lighting, thunder, heavy rains, and strong winds |
| stratus clouds | low, flat clouds that often bring drizzle |
| front | a place where two different types of air massed meet |
| cirrus clouds | thin, feathery clouds made up of ice crystals high in the sky |
| cumulus clouds | large, puffy clouds |
| weather forecaster | someone who makes predictions about the weather |
| weather satellite | devices in space that collect and record weather information |
| cold front | the leading edge of a cold air mass that forms as cold air meets warm air |
| warm front | the leading edge of a warm air mass that forms as warm air meets cold air |
| flash floods | sudden and violent floods |
| hurricanes | large, violent storms that form over warm ocean water |
| tornado | a violent, funnel-shaped storm of spinning wind |