| A | B |
|---|
| Air mass | A large body of air that has about the same temperature, air pressure, and moisture throughout. |
| Cirrus cloud | A thin, feathery cloud made up of ice crystals high in the sky. |
| Cold front | The leading edge of a cold air mass that forms as the cold air mass moves into a warm air mass. |
| Cumulus cloud | A large puffy cloud. |
| Flash flood | A sudden, violent flood. |
| Front | The place where two air masses meet. |
| Hurricane | A large violent storm accompanied by strong winds and, usually, heavy rain. |
| Stratus cloud | A low, flat cloud that often brings drizzle. |
| Thunderstorm | A storm that produces lightning and thunder and often heavy rain and strong winds. |
| Tornado | A violent, funnel-shaped storm of spinning wind. |
| Warm front | The leading edge of a warm air mass that forms as the warm air mass moves forward into a cold air mass. |
| Weather forecaster | A person who makes weather predictions or reports weather conditions. |
| Weather satellite | A human-made device in space that takes pictures of Earth and collects information about the weather. |
