density and air pressure demonstrations. demonstration 1 (pg. 7): the air is made up of: 78%...
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Density and Air Pressure Density and Air Pressure DemonstrationsDemonstrations
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Demonstration 1 (pg. 7): Demonstration 1 (pg. 7): The air is made up of:The air is made up of:
78% Nitrogen 78% Nitrogen21% Oxygen21% Oxygen
1% Other Gases1% Other Gases
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Experiment 2 (pg. 9): Experiment 2 (pg. 9): The atmosphere is constantly The atmosphere is constantly changing, with gases moving changing, with gases moving in and out of living things, the in and out of living things, the
land, and waterland, and water
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Demonstration 3 (pg. 11): Demonstration 3 (pg. 11): Air Has MassAir Has Mass
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Experiment 4 (pg. 11): Experiment 4 (pg. 11): Density = mass/volumeDensity = mass/volume
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Demonstration 5 (pg. 11): Demonstration 5 (pg. 11): Air Pressure pushes on Air Pressure pushes on objects in all directions. objects in all directions.
Including up!Including up!
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Experiment 6 (pg. 11): Experiment 6 (pg. 11): Air pressure increases as Air pressure increases as
density increasesdensity increases
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Demonstration 7 (not in the Demonstration 7 (not in the book, but a fact you need to book, but a fact you need to
know): know): Air is a FluidAir is a Fluid
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Demonstration 8: Demonstration 8: Air Pressure increases as Air Pressure increases as
temperature increasestemperature increases
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Demonstration 9: Demonstration 9: Air molecules expand as Air molecules expand as
temperature increases. As temperature increases. As temperature increases temperature increases
density decreases.density decreases.