7 Written questions
6 Multiple choice questions
- This comes from air resistance.
- Pressure only depends on the depth of the fluid, not the total amount present.
- Any material that can flow and take shape of its container. This includes- Liquids and gases.
- 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.
- 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.
6 True/False questions
Pressure → The amount of matter in a certain volume. Water is more dense than air; and therefore, it exerts more pressure.
Fluids → 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.
Thrust → Moving forwards comes from the engine.
Force, Pressure, and Area → Force divided by pressure= Area.
Pascal's principle → As the speed of a moving fluid increases, its pressure decreases. A frisbee works like this, and a boomerang to.
Archimedes' 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.