Weather and water cycle

30 terms by mhaynberg Teacher

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Air Pressure

the force exerted by the weight of a column of air on a surface

Barometer

an instrument that measures air pressure

Troposphere

the lowest layer of Earth's atmosphere

Weather

the condition of the atmosphere in a particular place at a particular time

Wind

the mainly horizontal movement of air

Local Wind

a wind that blows over a short distance

Sea Breeze

when cooler air flows from water to land

Land Breeze

when cooler air flows from land to water

Global Winds

winds that blow over long distances from a specific direction

Coriolis Effect

the curving effect that Earth's rotation has on all free-moving objects, including global winds

Jet Stream

a belt of high-speed wind in the upper troposphere

Humidity

the amount of water vapor in the air

Relative Humidity

the ratio of the amount of water in the air to the maximum amount of water vapor that the air can hold at that temperature

Dew Point

the temperature at which air becomes saturated

Cloud

a dense, visible mass of tiny water droplets or ice crystals that are suspended in the atmosphere

Fog

a cloud that is near or touching the ground

Stratus Clouds

flat layers of clouds that cover much or all of the sky

Cumulus Clouds

puffy, white clouds with flat bottoms

Cirrus Clouds

thin, white, wispy clouds with a feathery appearance

rain

liquid precipitation

sleet

precipitation in the form of ice pellets/balls that are less than 5mm in diameter

hail

precipitation in the form of ice pellets/balls that are a minimum of 5mm in diameter

snow

solid, crystal precipitation

freezing rain

liquid precipitation that turns to ice AFTER it lands on a surface

nimbus

rain producing clouds

water cycle

the continuous process by which water moves from Earth's surface to the atmosphere and back

condensation

the process of changing from a water vapor (gas) to a liquid water

evaporation

the process by which water changes from liquid form to an atmospheric gas

precipitation

the falling to earth of any form of water (rain or snow or hail or sleet or mist)

transpiration

the evaporation of water vapor from the leaves of plants

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