Term
| Air has mass because it is |
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Definition
| composed of atoms and molecules |
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Term
| Because air has mass it has ________ and ____________ |
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Definition
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Term
| The more molecules in a given volume of air the greater its ________ |
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Definition
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Term
| the less mass in a given volume of air the less ___________ the air |
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Definition
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Term
| Amount of mass in a given volume of air is its |
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Definition
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Term
| What is the formula for density |
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Definition
| mass divided by volume = density |
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Term
| an instrument that is used to measure changes in air pressure is |
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Definition
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Term
| why are aneroid barometers often more practical than mercury barometers? |
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Definition
| they contain no liquid and are smaller, making them portablbe |
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Term
| another word for elevation or distance above sea level is |
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Definition
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Term
| in air pressure 30 inches is _____ millabars |
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Definition
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Term
| air pressure increases as altitude decrease. true or false |
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Definition
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Term
true or false
the amount of oxygen is less at high altitudes |
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Definition
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