Earth Science Chapter 16 Vocabulary (Holt)

19 terms by flowerssam 

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relative humidity

amount of moisture the air contains compared with the maximum it can hold at a given temperature

cyclone

area of lower pressure and winds that spiral toward the center

barometer

mercury-filled glass tube that measures air pressure

front

boundary between two air masses

lightning

an electric discharge between two opposite charged surfaces

precipitation

water in solid or liquid form that falls from the air to Earth

isobar

line on a weather map connecting points of equal pressure

tornado

funnel cloud that touches the ground

humidity

amount of moisture in the air

weather

condition of the atmosphere at a certain time and place

thunderstorm

small, intense weather system with rain, strong winds, thunder, and lightning

thermometer

mercury-filled glass tube that measures air temperature

hurricane

large,rotating tropical weather system with high-speed winds

condensation

when water vapor becomes a liquid

anticyclone

area of higher pressure with winds that spiral outward

cloud

collection of millions of tiny water droplets or ice crystals

anemometer

rotating cups that measure wind speed

air mass

large body of air that has similar temperature and moisture throughout

thunder

sound that results from the rapid expansion of air along a lightning strike

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