7 Written questions
6 Multiple choice questions
- Pressure only depends on the depth of the fluid, not the total amount present.
- The metric (SI) unit for pressure. Abbreviation: Pa.
- Why does liquid travel up a straw when you drink from it? Because as pressure decreases the water pressure increases.
- The amount of matter in a certain volume. Water is more dense than air; and therefore, it exerts more pressure.
- This comes from the air lifting the plane.
- 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
Buoyant force → The upward force that fluids exert on all matter. Buoyant Force is caused by differences in fluid pressure.
Atmospheric pressure → 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.
Pressure → An amount of force exerted on a given area.
Pressure → The amount of matter in a certain volume. Water is more dense than air; and therefore, it exerts more pressure.
Thrust → Moving forwards comes from the engine.
Drag → This comes from the air lifting the plane.