Air pressure
Barometer that uses an airtight metal chamber
Aneroid
Ozone layer is found in this layer
Stratosphere
Rapidly whirling, funnel-shaped clouds
tornadoes
Air mass that forms over oceans
Maritime
Smog that forms when coal particles and water droplets mix; once found in London, England
London-type smog
Distance above sea level
Altitude
This layer protects Earth from meteoroids
mesosphere
The result of negative and positive electrical charges building up during a thunderstorm
Lightning
Boundary where two air masses meet
Front
Brown haze caused by sunlight acting on pollutants
Photochemical smog
Barometer that uses a glass tube
Mercury
Radio waves are picked up in this sublayer
ionosphere
Tropical cyclone that begins in oceans and brings heavy winds and rain
Hurricane
This front occurs when a cold air mass and a warm air mass meet, but neither one overtakes the other
Stationary
Activities such as farming and construction that can cause air pollution
Human
Air at Earth's surface and air at the top of the mountain: which is more dense?
Air at Earth's surface
Layer of the atmosphere closest to Earth's surface
troposphere
Temporarily move away during a storm
Evacuate
Air mass that forms in the tropics
Tropical
Agency that monitors air pollutants in the United States
Environmental Protection Agency (EPA)
Air pressure is the result of the weight of a ________ of air pushing down on an area
Column
Last layer before reaching outer space (has two sublayers)
thermosphere
Sudden, violent flood that occurs shortly after a storm
Flash flood
This front occurs when a warm air mass gets caught between two cool air masses
Occluded
Harmful substances in the air, water, and soil
Pollutants