Choose the correct vocabulary word for each definition.
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#1Definition
The force per unit area exerted by air on a surface.
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#2Definition
The layers of gases that surround Earth.
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#3Definition
Matter with no fixed shape or volume. Its particles are far apart and move fast.
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#4Definition
The force that pulls objects with mass toward each other.
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#5Definition
Force exerted per unit area on a surface.
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#6Definition
A measure of how hot or cold matter is, related to the average kinetic energy of its particles.
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#7Definition
The condition of the air at a certain time and place, like temperature, wind, and rain.
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#8Definition
Height above sea level.
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#9Definition
A tool that measures air pressure.
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#10Definition
All the living things on Earth and the places they live.
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#11Definition
What something is made of and how much of each part it has.
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#12Definition
How much mass is packed into a certain volume.
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#13Definition
The outermost layer, where the air fades into space.
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#14Definition
Warming of Earth’s surface and lower atmosphere as certain gases absorb and emit outgoing infrared radiation.
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#15Definition
All of the water on Earth: oceans, lakes, rivers, ice, ground water, and water vapor.
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#16Definition
A region high in the sky where sunlight knocks electrons loose from gas particles, leaving behind a layer of charged particles. It overlaps the mesosphere and thermosphere.
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#17Definition
Earth’s rigid outer shell, made of the crust and the rigid uppermost mantle.
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#18Definition
The boundary at the top of the coldest air layer, where temperature stops dropping and starts rising again with height.
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#19Definition
The middle layer of the atmosphere, where most meteors burn up.
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#20Definition
A gas made of three oxygen atoms bonded together, which absorbs most of the Sun's harmful ultraviolet rays.
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#21Definition
The boundary at the top of the layer where jet planes often fly, where temperature stops rising and starts dropping with height.
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#22Definition
The layer above the lowest layer. It holds the ozone layer and gets warmer as you go up.
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#23Definition
The lowest atmospheric layer, where most clouds and weather occur.
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#24Definition
A very thin atmospheric layer with high gas temperatures caused by absorption of solar energy; many auroras occur here.
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#25Definition
The boundary between the lowest layer of the atmosphere and the one above it.
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#26Definition
Differences among objects, individuals, conditions, or measurements, including traits within a population.