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24 Cards in this Set
- Front
- Back
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Mass
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A 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 the three-dimentional space
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Meter
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the basic until length 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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Mass divided by volume
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What is the unit for density?
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grams per milliliter
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atmosphere
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a mixture of gasses that surrounds a planet or moon
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What is the most abundant gas in Earth's atmosphere?
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Nirtogen
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What is the second most abundant gas in Earth's 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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carbon dioxide, argon
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Air Pressure
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the measure of the force which air molecules push on a substance
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Give an example of energy transfer by radiation.
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microwave
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Give an example of energy transfer by conduction.
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a pot on a stove
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Give an example of energy transfer by convection.
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circulating air in an oven
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What is the greenhouse effect?
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the warming of the surface and lower atmosphere of Earth that occurs when water vapor, carbon dioxide, and other gasses absorb and reradiate thermal energy
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Name two greenhouse gasses.
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water vapor and carbon dioxide
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what is global warming?
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a global increase in average global temperature.
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What is wind?
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the movement of air caused by differences in air pressure
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What creates wind?
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The greater the pressure difference the faster the wind moves.
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what causes differences in air pressure?
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differences in the air pressure are generally caused by the unequal heating of the earth
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What kind of atmospheric pressure is created by warm air?
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low pressure
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What kind of atmospheric pressure is created by cold air?
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high pressure
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What area on earth always has low pressure?
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equator
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what area on earth always has high pressure?
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poles
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