5 Written questions
5 Matching questions
- What is pressure?
- What is the SI unit of pressure?
- What does Pascal's Principle state?
- How do hydraulic systems take advantage of Pascal's principle?
- How do planes (flying disks- same concept) take advantage of Bernoulli's principle?
- a when a force applied to a confined fluid the change is pressure is equally transmitted through the fluid.
- b my multiplying the force over a greater area.
- c Pascals
- d 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.
- e The amount of force exerted on a surface
5 Multiple choice questions
- the amount of water the ship displaces increases the buoyant force and therefore has a net force greater upwards than down.
- that the buoyant force that is acting on an object is equal to the weight of the water that is displaced
- the earth's atmosphere is constantly applying pressure (example)
5 True/False questions
How does a submarine dive? → By increasing its density with water and overcoming the buoyant force by adding more weight and not changing the volume and therefore not displacing anymore water to increase the buoyant force.
How do chimneys take advantage of Bernoulli's principle? → the wind on top of the chimney creates a lower pressure at the top, on the bottom is a greater pressure which forces the smoke and heat to rise
What can you tell about an object if you know the density? → mass/volume
What is a fluid? → a material that can easily flow
When will an object float? → the amount of water the ship displaces increases the buoyant force and therefore has a net force greater upwards than down.