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Atmosphere Vocabulary

AB
weatherthe condition of Earth's atmosphere at a particular time and place
atmospherethe layer of gases that surrounds a planet
nitrogenthe most abundant gas in Earth's atmosphere
water vaporwater in the form of a gas
oxygenthe gas that humans must breathe in order to live
ozonea form of oxygen that has 3 atoms of oxygen
air pollutionharmful substances in the air
carbon dioxidethe gas plants need to produce food and live
smoga combination of the words "smoke" and "fog"
fossil fuelsa natural fuel such as coal, oil, or gasoline, formed in the geological past from the remains of living organisms
photochemical smogAir pollution produced by the action of sunlight on hydrocarbons, nitrogen oxides, and other pollutants
acid rainrain that contains more acid than is normal due to air pollution
properties of airmass, density, pressure
massa measure of the number of atoms in it
densitythe mass of an object divided by its volume
air pressurethe force of air pushing down on an area or surface
barometeran instrument used to measure a change in air pressure
mercury barometeran instrument that has a glass tube partially filled with mercury
aneroid barometera baromter that measures changes in air pressure without using liquid
altitudeelevation-how high something is
sea levelthe average height of the surface of the ocean (difference between high and low tide)
troposphereat 0-12 km-lowest layer of Earth's atmosphere where we live and where weather happens
exosphereabove 550 km highest level of Earth's atmosphere and where phone calls and TV signals travel
stratosphereat 12-50 km-contains the ozone layer and is right above the troposphere
mesosphereat 50-80 km-meso means middle-where most meteors burn up
thermosphereabove 80 km-incudes the ionospere and the exosphere
aurora borealisthe Northern Lights that light up the night sky in the ionosphere


5th Grade Instructor
CA

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