7 Written Questions
6 Multiple Choice Questions
- Because pressure increases with depth, the pressure on the bottom of the object is greater that n the pressure on the top. Therefore, there is a net upward force on the object.
- This comes from the air lifting the plane.
- The amount of matter in a certain volume. Water is more dense than air; and therefore, it exerts more pressure.
- The upward force that fluids exert on all matter. Buoyant Force is caused by differences in fluid 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.
- The buoyant force on an object in a fluid is an upward force equal to the weight of the volume of the fluid that the object displace- displace means " take the place of"
6 True/False Questions
Pascal's principle → 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.
Drag → This comes from air resistance.
Pressure → An amount of force exerted on a given area.
Pressure → The metric (SI) unit for pressure. Abbreviation: Pa.
Force, Pressure, and Area → Force divided by pressure= Area.
Thrust → Moving forwards comes from the engine.