layers of gases surrounding a planet or other celestial body.
visible mass of tiny water droplets or ice crystals in Earth's atmosphere.
process by which water vapor becomes liquid.
community and interactions of living and nonliving things in an area.
capacity to do work.
tube-shaped cloud that, if it touches Earth, becomes a tornado or waterspout.
weather pattern characterized by high air pressure, usually as a result of cooling. High-pressure systems are usually associated with clear weather.
weather pattern characterized by low air pressure, usually as a result of warming. Low-pressure systems are often associated with storms.
person who studies patterns and changes in Earth's atmosphere.
(singular: phenomenon) any observable occurrence or feature.
frog or toad in its early state of development. Also called a tadpole.
all forms in which water falls to Earth from the atmosphere.
severe weather indicating a disturbed state of the atmosphere resulting from uplifted air.
a violently rotating column of air that forms at the bottom of a cloud and touches the ground.
rising movement of gas.
column of rotating fluid, such as air (wind) or water.
column of rotating cloud-filled wind that descends to an ocean or lake.
state of the atmosphere, including temperature, atmospheric pressure, wind, humidity, precipitation, and cloudiness.