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Chapter 3-1 Pressure
Right Side

1.  What is pressure
    A.  Force pushing on a surface
    B.  Formula
        1.  Pressure = force divided by area
        2.  Pressure = Force
    C.  Units -
        1.  Pascal (Pa)
        2.  1 N/m2 = 1 Pa
2.  Area
    A.  Area is the measure of a surface.
    B.  Jello demonstration
3.  Fluid Pressure
    A.  All of teh forces exerted by the individual molecules in a fluid add together to make up the pressure exerted by the fluid
    B.  Molecules are constantly moving in a fluid
4.  Air
    A.  Air exerts pressure because it has mass
    B.  Air pressure at sea level is 10.13 N/cm2
    C.  Balanced pressure-
        1.  air pushing down equals air pushing up
        2.  fig. 4, pg. 73
5.  Variations in fluid pressure
    A.  Air pressue decreases as elevation increases
    B.  Water pressue increases as depth increases


Left side

Chapter 3-2 Transmitting Pressue in a Fluid
Right side
    Pascal's principle-
    Hydraulic devices-

1.  Pascal's principle
    A.  Blaise Pascal discovered the principle of pressure
    B.  force pumps
        1.  fig. 9, pg 80
        2. Name two types of force pumps
            1.  your heart
            2.  brake system on cars
2.  Pascal's principle in Nature
    A.  fig. 11, pg. 81
    B.  Water vascular system used to move


Left side
Squiddy activity

Chapter 3 -3 Floating and sinking
Right side
    buoyant force-
    Archimedes' principle-

1.  Buoyancy
    A.  Fluid exerts pressure on all surfaces of a submerged object.
    B.  An object feels lighter in water than air
    C.  A submerged object displaces ar takes the place of a volume of fluid equal to its own volume.
    D.  fig. 14, pg. 83
2.  Density
    A.  formula
        density = mass/volume
    B.  higher the number the denser the object and it will sink
    C.  lower the number the lighter the object and it will float
    D.  fig. 16, pg. 87 (remember from beginning of the year?)
    E.  fig. 15, 86
        draw and label


Left side
buoyancy and Archimedes' principle wksht.

Chapter 3-4 Bernoulli's principle
Right side
    Bernoulli's principle

1.  Bernoulli discovered-
    A.  The faster a fluid moves, the less pressure the fluid exerts
    B.  Blow on a piece of tissue (paragraph in the book)
2.  Bernoulli's principle explains flight-
    A.  Objects can be designed so their shapes cause air to move at different speeds above and below them
    B.  pg. 91 - Exploring
3.  Bernoulli's principle at home-
    A.  Smoke from the fire in the fireplace rises because it is pushed
    B.  fig. 19, pg. 90
    C.  Attack of the shower curtain
    D.  Atomizer (fig. 20, pg. 92)


Left side
Baffling with Bernoulli