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Air Pressure

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Air Pressure How to measure the air around us. Air pressure is the force exerted on you by the weight of tiny particles of air (air molecules). Although air molecules ... – PowerPoint PPT presentation

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Title: Air Pressure


1
Air Pressure
  • How to measure the air around us.

2
Air pressure
  • is the force exerted on you by the weight of tiny
    particles of air (air molecules). Although air
    molecules are invisible, they still have weight
    and take up space. Since there's a lot of "empty"
    space between air molecules, air can be
    compressed to fit in a smaller volume.

3
  • At sea level, the air pressure is about 14.7
    pounds per square inch.

1013.2 millibars
1013.2 Hectopascal
29.92 inches of mercury
4
  • Low pressures 950 mb to 1005mb.
  • High pressures 1015mb to 1040 mb.
  • Under a low pressure area, air is rising and as
    a result, the surface has less air molecules than
    before. Under a high pressure area, air is
    sinking towards the surface and piles up before
    spreading out.

5
Digital Barometer
6
(No Transcript)
7
Temperature
  • is a measure of the average heat or thermal
    energy of the particles in a substance.

8
(No Transcript)
9
Unit of temperature
  • Degrees Celsius
  • Degrees Fahrenheit

10
Quiz
  • 1._______2._________Unit of temperature
  • 3._______is the force exerted on you by the
    weight of tiny particles of air
  • At sea level, the air pressure is about
    4.________inhg 5._______millibars
  • 6. _______ pounds per square inch(psi)
  • 7._______ is a measure of the average heat or
    thermal energy of the particles in a substance

11
Quiz
  • 8.________

12
Quiz
  • 9.________

13
Quiz
  • 10.________

14
Quiz
  • 11.________

15
Quiz
  • 12.________

16
Quiz
  • 13.________

17
Quiz
14.______
18
Quiz
15.______
19
Quiz
17.______
20
Quiz
18.______
21
Quiz
19.______
22
Quiz
20.______
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