| Term | Definition |
|---|---|
| Anemometer | An instrument for measuring wind speed |
| Rain Gauge | An instrument used to gather and measure the amount of liquid precipitation |
| Barometer | An instrument for measuring air pressure |
| Thermometer | An instrument for measuring air temperature |
| Hygrometer | An instrument for measuring humidity |
| Weather vane/Wind vane | A device that tells the direction of the wind |
| Condensation | The process by which a gas changes to a liquid |
| Precipitation | Water that falls from clouds to Earth |
| Evaporation | The process by which liquid changes to a gas |
| Water Cycle | The constant movement of water throughout the atmosphere |
| Meteorologist | A person who studies weather |
| Weather | The condition of the atmosphere at a certain place and time |
| Air Mass | Large body of air with the same temperature and humidity |
| Polar Climate | Climate that is very dry and cold |
| Climate | The pattern of weather an area experiences over time |
| Temperate Climate | A climate that changes with the seasons – like Georgia |
| Current | A stream of water that flows through the ocean like a river |
| Tropical Climate | Climate that is hot and rainy |
| Cold Front | A cold air mass moves under a warm air mass, causing storms |
| Cold Front Symbol | It is a blue line with blue triangles |
| Meteorology | The study of weather |
| Front | A place where two air masses meet |
| Stationary Front | A front that is not moving either way |
| Humidity | The amount of water vapor in the air |
| Warm Front | When warm air moves over cold air and produces long-lasting rain |
| Warm Front Symbol | It is a red line with red half circles |
| What is a low air pressure system? | An air mass with low air pressure |
| What kind of weather does a low pressure system bring? | It brings warm and rainy weather (low air pressure = less dense = warmer) |
| What is a high pressure system? | An air mass with high air pressure |
| What kind of weather does a high pressure system bring? | It brings cool and fair weather (high air pressure = more dense = cooler) |
| In what direction does weather usually move across the United States? | West to East |
