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4.4 Weather

TermDefinition
Weather day to day state of the atmosphere for a given area
Climate the weather of a given area averaged over an extended period of time (years)
Thermal Energy transfer from the sun impacts air movement and weather conditions
Atmosphere dynamic system and changes in conditions; may cause weather phenomena that may affect an ecosystem
Weather instruments (thermometer, barometer, rain gauge, anemometer) and observations of sky conditions are used to collect, record, and graph weather data over time; analyze results and determine patterns that may be used to make weather predictions.
Thermometer measuring the temperature of the air.
Rain Gauge measures the amount of precipitation.
Anemometer measures wind speed
Barometer measures air pressure
Thunderstorms Warm, humid conditions are very favorable for thunderstorm development. A typical thunderstorm produces a brief period of heavy rain and lasts anywhere from 30 minutes to an hour. Lightning always precedes thunder.
Hurricanes occur over warm, tropical water and have winds equal to or greater than 74 miles per hour.
High pressure air masses are associated with clear skies and light winds.
Low pressure air masses are associated with stormy weather and strong winds.
Cumulus Clouds fluffy and white with flat bottoms. They usually indicate fair weather.
Cumulonimbus Clouds when the clouds get larger and darker on the bottom. They may produce thunderstorms
Stratus Clouds are smooth, gray clouds that cover the whole sky (and block out direct sunlight). Light rain and drizzle are usually associated with stratus clouds
Cirrus Clouds are feathery clouds. They are associated with fair weather, but often indicate that rain or snow will fall within several hours.
Created by: user-2007132
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