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SMS Earth Science

Sweetwater MS - 6th grade chapter 15 vocab. flashcards

QuestionAnswer
Weather The conditions of Earth’s atmosphere at a particular time and place.
Atmosphere The mixture of gases that surrounds Earth. The outermost of the four sphere into which scientists divide Earth.
Ozone A form of oxygen that has three oxygen atoms in each molecule instead of the usual two.
Water Vapor The invisible, gaseous form of water.
Temperature Inversion A layer of warm air that prevents the rising air from escaping. This traps polluted air and keeps it close to the Earth’s surface.
Air Pressure A force that is the result of the weight of a column of air pushing down on an area.
Barometer An instrument used to measure changes in air pressure.
Altitude Elevation above sea-level.
Troposphere The lowest layer of Earth's atmosphere, where weather occurs.
Stratosphere The second-lowest layer of Earth's atmosphere; the ozone layer is located in the upper stratosphere.
Mesosphere The middle layer of Earth's atmosphere; the layer in which most meteoroids burn up.
Thermosphere The outermost layer of Earth's atmosphere.
Ionosphere The lower part of the thermosphere, where electrically charged particles called ions are found.
Exosphere The outer layer of the thermosphere, extending outward into space.
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.
Created by: wesdiers
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