5 Written questions
5 Matching questions
- What is buoyancy?
- How do chimneys take advantage of Bernoulli's principle?
- When will an object float?
- what is the formula for pressure?
- How do atomizers take advantage of Bernoulli's principle?
- a force/area
- b the flask at the top (when you squeeze it) creates a greater fluid speed which causes a lower pressure and the pressure in the bottle is greater and causes the liquid in the bottle to move up and out of the bottle.
- c if the buoyant force is greater than gravity (weight)
- d 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
- e a force that acts in the opposite direction of gravity
5 Multiple choice questions
- The amount of force exerted on a surface
- 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.
- that the buoyant force that is acting on an object is equal to the weight of the water that is displaced
- my multiplying the force over a greater area.
5 True/False questions
What can you tell about an object if you know the density? → mass/volume
As elevation increases, pressure → decreases
How do planes (flying disks- same concept) take advantage of Bernoulli's principle? → 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.
What are some example's of hydraulic lifts? → The faster the fluid moves, the less pressure it exerts within the fluid.
What does Bernoulli's principle state? → The faster the fluid moves, the less pressure it exerts within the fluid.