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23 Cards in this Set
- Front
- Back
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mass
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the measure of the amount of matter in an object.
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volume
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a measure of the size of a body or region in three dimensional space
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Meter
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The basic unit of length in the SI
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Gram
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used to describe the mass of a smaller object.
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Liter
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the basic unit of volume in the SI`
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what is density?
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The ratio of the mass of a substance to the volume of the substance.
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How is density calculated?
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density = mass/volume
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what is the unit for density
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g/ml
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atmosphere
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a mixture of gases that surround a planet or moon
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what is the most abundant gas in the atmosphere?
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nitrogen
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what is the second most abundant gas in the atmosphere?
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oxygen
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name two other gases that make up 1% of earth's atmosphere?
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argon, water vapor
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air pressure
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the measure of the force with the which air molecules push on a surface
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altitude
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the angle between an object in the sky and the horizon
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give and example of energy transfer by radiation
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a microwave
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give and example of energy transfer by conduction
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touching a hot car door
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give and example of energy transfer by convection
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boiling water
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what is the greenhouse effect?
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the warming of the surface & lower atmosphere of earth that occurs when water vapor, carbon dioxide and other gases absorb and rerasiate thermal energy
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name two greenhouse gases
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water vapor, carbon dioxide
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what is global warming?
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a gradual increase in average global temperature.
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what is wind?
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moving air
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what creates wind?
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the movement of air caused by differences in air pressure.
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what causes differences in air pressure?
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a change in the altitude or hot or cold fronts.
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