| A | B |
| front | a meeting of a cold and warm air mass |
| air mass | a large body of air with the same properties |
| tornado | a violent, funnel shaped cloud with extremely strong winds |
| hurricane | a large tropical storm that forms over large bodies of water |
| vortex | a swirling column of air or water |
| thermometer | a device used to measure temperature |
| weather vane | a device used to measure wind direction |
| psychrometer | a device used to measure relative humidity |
| hygrometer | a device used to measure humidity |
| anemometer | a device used to measure wind speed |
| barometer | a device used to measure air pressure |
| anticyclone | a region in the atmosphere where the air pressure is increased |
| depression | a region in the atmosphere where the air pressure is increased |
| climate | the pattern of weather that a place on Earth experiences |
| humidity | the amount of moisture in the air |
| atmosphere | a thick blanket of air that surrounds the Earth |
| meteorologist | A scientist who studies the weather and atmosphere. |
| weather forecaster | someone who looks at the current conditions and other weather data and predicts the weather |