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Weather

Science

Weather Chapter Video

Weather Chapter Video

air front

the boundary between two air masses of different temperatures
air front Simple Definition

air mass

a huge body of air with similar temperature and moisture throughout
air mass Simple Definition

air pressure

the weight of the air pressing down on a surface
air pressure Simple Definition

atmosphere

the layer of gases that surround the Earth
atmosphere Simple Definition

barometer

an instrument that measures air pressure
barometer Simple Definition

climate

the average weather conditions of an area, over a long period of time
climate Simple Definition

condensation

the process of a gas changing into a liquid
condensation Simple Definition

convection

the transfer of heat energy from a warmer area to a cooler area in a liquid or gas
convection Simple Definition

cyclone

a storm of swirling air with a low-pressure center
cyclone Simple Definition

evaporation

the top of liquid changing into a gas
evaporation Simple Definition

humidity

the amount of water vapor in the air
humidity Simple Definition

hurricane

a large tropical storm with winds of more than 74 mph
hurricane Simple Definition

land breeze

the flow of air from land to sea
land breeze Simple Definition

precipitation

water that falls to Earth in any form, like rain, snow, sleet, or hail
precipitation Simple Definition

sea breeze

the flow of air from the sea to land, in the daytime
sea breeze Simple Definition

storm surge

a large rise in water levels caused by hurricane waves and winds
storm surge Simple Definition

thunderstorm

a storm with lightning and thunder
thunderstorm Simple Definition

tornado

a spinning funnel-shaped column of wind
tornado Simple Definition

troposphere

the layer of the atmosphere closest to Earth’s surface
troposphere Simple Definition

weather

the atmospheric conditions at a specific time and place, like raining and cold
weather Simple Definition

wind

air movement caused by pressure differences
wind Simple Definition

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