Density and Air Pressure Demonstrations. Demonstration 1 (pg. 7): The air is made up of: 78% Nitrogen 21% Oxygen 1% Other Gases.

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Presentation transcript:

Density and Air Pressure Demonstrations

Demonstration 1 (pg. 7): The air is made up of: 78% Nitrogen 21% Oxygen 1% Other Gases

Experiment 2 (pg. 9): The atmosphere is constantly changing, with gases moving in and out of living things, the land, and water

Demonstration 3 (pg. 11): Air Has Mass

Experiment 4 (pg. 11): Density = mass/volume

Demonstration 5 (pg. 11): Air Pressure pushes on objects in all directions. Including up!

Experiment 6 (pg. 11): Air pressure increases as density increases

Demonstration 7 (not in the book, but a fact you need to know): Air is a Fluid

Demonstration 8: Air Pressure increases as temperature increases

Demonstration 9: Air molecules expand as temperature increases. As temperature increases density decreases.