← Science Chapter 11 Test
5 Written Questions
5 Matching Questions
- What is a fluid?
- What is area measure by?
- How do planes (flying disks- same concept) take advantage of Bernoulli's principle?
- What are some example's of hydraulic lifts?
- When will an object float?
- a the shape of their wings are curved on the top which creates a greater distance and air has to cover to match the speed of the bottom of the wing. Therefore, the fluid on the top of the wing moves faster and creates a lower pressure while the bottom of the wing has a greater pressure causing a lift. this lift make the wing rise and the airplane with it.
- b a material that can easily flow
- c fire truck, machines that raise cars
- d meters squared
- e if the buoyant force is greater than gravity (weight)
5 Multiple Choice Questions
- the earth's atmosphere is constantly applying pressure (example)
- equal to its own volume.
- my multiplying the force over a greater area.
- equal to the volume of what is submerged.
- The faster the fluid moves, the less pressure it exerts within the fluid.
5 True/False Questions
How does a submarine dive? → the amount of water the ship displaces increases the buoyant force and therefore has a net force greater upwards than down.
What does Pascal's Principle state? → The faster the fluid moves, the less pressure it exerts within the fluid.
As elevation increases, pressure → increases
What is the formula for density? → mass/volume
What is the SI unit of pressure? → Pascals