amount of moisture the air contains compared with the maximum it can hold at a given temperature
area of lower pressure and winds that spiral toward the center
mercury-filled glass tube that measures air pressure
boundary between two air masses
an electric discharge between two opposite charged surfaces
water in solid or liquid form that falls from the air to Earth
line on a weather map connecting points of equal pressure
funnel cloud that touches the ground
amount of moisture in the air
condition of the atmosphere at a certain time and place
small, intense weather system with rain, strong winds, thunder, and lightning
mercury-filled glass tube that measures air temperature
large,rotating tropical weather system with high-speed winds
when water vapor becomes a liquid
area of higher pressure with winds that spiral outward
collection of millions of tiny water droplets or ice crystals
rotating cups that measure wind speed
large body of air that has similar temperature and moisture throughout
sound that results from the rapid expansion of air along a lightning strike
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