if a fluid flows from a fire hydrant to a fire. where is the high pressure located? how do you know?...
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• If a fluid flows from a fire hydrant to a fire. Where is the high pressure located? How do you know?
3-1
5 pts
• Where is atmospheric pressure least? – At the ocean– where an airplane cruises– In a mountainside city– at the outer edge of the atmosphere
3-1
5 pts
The buoyant force acting on the duck is _________________. The weight of the
displaced water is ____________.
35N
30 N
3-2
10 pts
• A camera sitting on your desk has an area of .73 m2 and weighs 5.5N. What is the pressure exerted by the camera on your desk?
3-1
15 pts
• Fish consume oxygen gas in the water and expel carbon dioxide out their mouth. This carbon dioxide comes out in the form of a bubble. Explain why the bubble is round.
3-1
15 pts
Aluminum has a density of 2.7 g/cm3. If a block of aluminum is cut in half, what will be the density of each piece of aluminum? Why?
3-2
15 pts
• Which of the following statements best describes why rain drops fall to the ground from a cloud? – A fluid can flow and take the shape of its’
container.– Air is about 1,000 times less dense than water.– Fluids flow from low to high pressure
3-1
10 pts
After a ship wreck, buried treasure sank to the bottom of the ocean. Explain why
it sank according to buoyant force.
3-2
10 pts
• Fluids have characteristic properties that allow you to identify them. List three properties of fluids.
3-1
5 pts
You are asked to find the identity of an unknown substance. You are given the objects weight, mass, density and volume. Which piece of information would best be used to help you identify the substance?
3-2
10 pts
• Which of the following would affect the level at which a row boat floats in a body of water? Give all correct answers: – depth of the water– number of people in the canoe– shape of the canoe– density of the canoe’s material
3-2
10 pts
• You are given a solid ball of clay. You are instructed to make the clay float. You must use all of the clay. What do you do?
3-2
5 pts
• This explains why a rock that displaces 5N of water has a buoyant force of 5N. – Pascal’s Principle– Bernoulli’s Principle– Newton’s Principle– Archimedes’ Principle
3-2
10 pts
Emily and her partner are performing a science lab. They are given the density of 6 different objects. How do you know which objects will sink or float in water?
3-2
10 pts
• A carton of ice cream weighs 18N. It displaces a volume of water that weighs 13N. What is the buoyant force on the object?
3-2
15 pts