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The outer layer of gases of a large body in space
Atmosphere
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A series of events or actions that repeats themselves regularly
Cycle
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The distance above sea level
Altitude
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A measure of the amount of matter packed into a unit volume
Density
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Energy that travels across distances as certain types of waves
Radiation
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The transfer of heat energy from one substance to another through direct contact
Conduction
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The transfer of energy from place to place by the motion of heated gas or liquid
Convection
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radiation of higher frequencies than visible light which can cause sunburn
Ultraviolet radiation
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Radiation of lower frequencies than visible light
Infrared radiation
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A gas that consists of three oxygen atoms
Ozone
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the process by which certain gases in a planet's atmosphere absorb and emit infrared radiation, resulting in an increase in surface tempeture
Greenhouse Effect
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Gases such as carbon dioxide and methane, that absorb and give off infrared radiation as part of the greenhouse effect
Greenhouse gas
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Harmful materials added to the air that can cause damage to living things and the environment
Air pollution
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Tiny particles or droplets, such as dust, dirt, and pollen that are mixed in with air
Particulates
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Fuels formed from the remains of prehistoric organisms that are burned for energy
Fossil fuels
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The combination of smoke and fog, a type of air pollution that occurs when sunlight causes unburnt fuels, fumes, and other gases to react chemically, often seen as a brownish haze
Smog
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