Properties of Air

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Properties of Air

• 6C

If its in YELLOW, write it down.
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A. Composition of Air

• Air is made up of
• 78 Nitrogen
• 21 Oxygen
• 1 Other gases

Draw this image.
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B. Properties Of Air

• 1. MASS the amount of
• matter (atoms)
• in an object.
• Remember the Balloon and Balance Experiment?

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Properties Of Air (continued)

• 2. DENSITY the amount of mass
• in a given volume.

Remember the density column we made in class?
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Properties Of Air (Continued)

• 2. VOLUME- the amount of space
• an object takes up
• Napkin in a Cup of Water
• Balloon in a Bottle

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Properties of Air (continued)

• 4. AIR PRESSURE
• the amount of air pushing
• down on an area.

Blow up balloon Egg in a Bottle
Click me.
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C. Measuring Air Pressure

• 1. AIR PRESSURE increases as
• you go closer to the Earth

There is so much air above you that at sea
level you have 14.7 lbs/in2 pushing on you.
Thats 10 bags of sugar per every inch of skin
on your body.
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C. Measuring air pressure continued2. Tools to
measure Air Pressure

• Barometers to
• measure air
• pressure.

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C. Measuring air pressure continued 3. Units of
Air Pressure

• Millibars
• TV weather stations and aviation use inches of
  mercury.
• Meteorologists use millibars, an SI unit.