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Science

TermDefinition
Weather The condition of earths atmosphere at a particular time and place.
Atmosphere The layer of gases that surrounds the earth.
Ozone A form of oxygen that has three oxygen atoms in each molecule instead of the usual two.
Water Vapor Water in a form of gas.
Troposphere The lowest layer of earths atmosphere, where weather occurs.
Thermosphere The outermost layer of earth.
Aurora Borealis A colorful, glowing display in the sky caused when particles from the sun strike oxygen and nitrogen atoms in the ionosphere; also called the Northern Lights.
Stratosphere The second-lowest layers of earths atmosphere; the ozone layer is located in the upper stratosphere.
Ionosphere
Exosphere
Mesosphere
Pollutant
Acid Rain Rain that contains more acid than normal.
Photochemical Smog
Denisty The amount of mass of substance to a given volume.
Barometer An Instrument used to measure changes in air pressure.
Altitude Elevation above sea level.
Pressure The force pushing on an area or surface.
Mercury Barometer In instrument that measures changes in air pressure, consisting of a glass tube partially filled with mercury, with its open end resting in a dish of mercury. Air pressure pushing on the mercury in the dish forces the the mercury in the tube higher.
Air Pressure A force that is the result of the weight of a column of air pushing down on an area.
Aneriod Barometer an instrument that measures changes in the shape of an airtight metal box cause a needle on barometer dial to move.
Created by: Nakayla_17
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