Weather Factors Weather Factors Weather is the state

Weather Factors

Weather Factors Weather is the state of atmosphere at a specific time and place. The Earths temperature has increased by 1 degree over the past century.

What causes weather? The sun warms earth’s surface increasing its temperature. The sun’s energy is used to evaporate water and put moisture into the air. Air rises and cools to form clouds • The transfer of energy between: - The sun - Earth’s surface - The Atmosphere. Water vapor condenses to from precipitation and releases energy into the atmosphere m Unequal heating and differences in air pressure cause wind.

Temperature • Temperature and particle motion are related. Mr. Fetch’s Earth Science Classroom

Factors that affect temperature Cities are Warmer Mountains are Colder Cloudy days Cloudy nights are Cooler are Warmer Mr. Fetch’s Earth Science Classroom

Wind is moving air and is caused by differences in air pressure within our atmosphere. Air under high pressure moves toward areas of low pressure H L We can measure winds with a windsock, weather vain, anemometer and beaufort scale Mr. Fetch’s Earth Science Classroom

Barometric Pressure atmospheric pressure as indicated by a barometer Mr. Fetch’s Earth Science Classroom

Moisture: Change of State Sublimation Uses Heat EVAPORATION MELTING Uses Heat CONDENSATION FREEZING Gives off Heat Deposition Gives off Heat Mr. Fetch’s Earth Science Classroom

Warm air holds more moisture than cold air. Mr. Fetch’s Earth Science Classroom