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7 Written questions

6 Multiple choice questions

  1. Moving forwards comes from the engine.
  2. This= Force divided by Area. Square meter/ n divided by meter2
  3. Why does liquid travel up a straw when you drink from it? Because as pressure decreases the water pressure increases.
  4. Pressure 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.
  5. 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.
  6. The wing shape on a plane os what causes different speed of air, which affects pressure. The air that foes over the wing must travel faster than the wing to meet up at the end. This creates less pressure above the wing compared to below which creates lift.

6 True/False questions

  1. Force, Pressure, and AreaForce divided by pressure= Area.

          

  2. Bernoulli's principleA 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.

          

  3. DragThis comes from the air lifting the plane.

          

  4. PascalThis comes from air resistance.

          

  5. Archimedes' PrincipleA 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. LiftAny material that can flow and take shape of its container. This includes- Liquids and gases.