Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Understanding Weather
Document related concepts
no text concepts found
Transcript
Understanding Weather Weather • The condition of the atmosphere at a certain time and place TOOLS Anemometer •Used to measure wind speed Barometer •Used to measure air pressure Radar (Hurricane Ike) Weather Balloons psychrometer • An instrument used for measuring relative humidity. It has one “dry” bulb and one “wet” bulb. Air Masses • A large body of air that has the same temperature and moisture • Get their moisture and temperature from the area over which it forms Air Masses Fronts • Boundary between two air masses • Bring changes in the weather • Fronts are named for the air that is behind them Cold Front • Cold dense air pushes warm air out of • • • • the way Moves quickly Brings short periods of heavy rain/thunderstorms/snow Lower temperatures are behind the front SYMBOL – the direction of the “arrows” points towards the direction the front is MOVING Warm Front • Warm air moves on top of the cold air • • • • mass, as it slowly pushes the cold air Moves slowly Brings many days of steady precipitation Higher temperatures and clear skies are behind the front SYMBOL – direction of “half-moons” is the direction the front is moving Stationary Front • The air from the warm front and cold front meet, but do not move • Cold air mass cannot force warm air mass up • Bring many days of steady precipitation • SYMBOL – warm and cold fronts are moving in opposite directions, thus making a stationary condition The End
