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Science Chapter 7 Test

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7 Written Questions

6 Multiple Choice Questions

  1. An amount of force exerted on a given area.
  2. All fluids exert pressure. Pressure is created by the particles in a fluid pushing against each other and the sides of whatever container they are in. Fluids exert pressure equally in all directions.
  3. Any material that can flow and take shape of its container. This includes- Liquids and gases.
  4. As the speed of a moving fluid increases, its pressure decreases. A frisbee works like this, and a boomerang to.
  5. The upward force that fluids exert on all matter. Buoyant Force is caused by differences in fluid pressure.
  6. A change in pressure at any point in an enclosed fluid will be transmitted equally to all parts of that fluid. Uses and examples: brakes, power, lifters, etc. Liquids are best used in hydraulic devices because they cannot be compressed into smaller spaces like gases can.

6 True/False Questions

  1. DragThis comes from air resistance.

          

  2. Force, Pressure, and AreaThis= Force divided by Area. Square meter/ n divided by meter2

          

  3. ThrustThis comes from air resistance.

          

  4. PressureThe amount of matter in a certain volume. Water is more dense than air; and therefore, it exerts more pressure.

          

  5. Plane's and their pressurePressure caused by the weight of the atmosphere. Earth's atmosphere is held in place by gravity. Although we don't feel this pressure because the fluids in our body exert an equal outward pressure. The closer you are to Earth's surface you are, the greater the pressure because you are "deep" in the atmosphere.

          

  6. PascalThis comes from air resistance.

          

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