| A | B |
|---|
| Cumulus clouds | fluffy, white, with flat bottoms. Usually indicate fair weather |
| Cumulo-nimbus clouds | produce thunderstorms |
| Stratus cloud | smooth, gray, cover the whole sky; light rain and drizzle |
| Cirrus clouds | feathery clouds; fair weather; indicate rain or snow will fall in a few hours |
| Barometer | measures air pressure |
| Anemometer | measures wind speed |
| Rain Gauge | measures amount of precipitation |
| Thermometer | measures the temperature of the air |
| High Pressure | associated with clear, cool weather |
| Low Pressure | associated with warm, wet weather |
| Warm Front | warm air mass meets colder air mass. Sheets of gray clouds, rain |
| Cold Front | cold air mass bumps up against a warm air mass. Strong storms (thunderstorms, snow storms) |
| Front | a place where two different air masses meet |
| Air Mass | a large body of air that has the same temperature and humidity throughout |
| Thunderstorm | a heavy rainstorm with lightning and thunder |
| Hurricane | Starts over the ocean. A large storm;strong winds and rain;floods; has an "eye" in the center. |
| Tornado | Whirling wind in the shape of a funnel. Spins very fast. |
| Blizzard | A strong snow storm; high winds blowing snow making it difficult to see. |
