Buoyancy is the apparent loss of _______ in a fluid.
What is weight?
100
When force is applied to a confined fluid, an increase in pressure is transmitted equally to all parts of the fluid. This is called what.
What is Pascal's Principle.
100
The fact that a heavy steel cargo ship can carry a heavy load without sinking illustrates which principle?
What is Archimedes's Principle
100
Force divided by area equals this.
What is pressure.
200
This much force is required to produce a pressure of 70 pascals over an area of 2 square meters.
What is 140 Newtons?
200
The buoyant force of a fluid on an object is equal to the _______ of the fluid displaced by the object.
What is weight?
200
A device that uses pressurized fluid acting on pistons of different sizes to change a force
What is hydraulic system.
200
Hydraulic devices multiply force using?
What is Pascal's.
200
Ships increase ______ in an effort to decrease density
What is volume.
300
Which exerts more pressure, a table resting on four legs, or the same table flipped onto its tabletop?
What is on four legs?
300
If an object floats in a fluid, its density is _______ than that of the fluid.
What is less?
300
True or False:
A hydraulic system multiplies the force exerted.
True
300
Pressure is transmitted equally throughout a closed system
What is Pascal's.
300
A boat that weighs 28,800 N is loaded with 7,200 N of cargo. After it is loaded, what is the buoyant force acting on the boat?
36,000 N
400
Which of the two exerts more pressure, a small elephant weighing 2000 kg on four legs equal to .024 square meters, or a ballerina weighing 50 kg who dances on her tiptoes at a total area of .004 square meters?
What is the elephant?
400
If an object is suspended in a fluid, this intrinsic property of the object is equal to that of the fluid.
What is density?
400
A ping pong ball will remain suspended in a stream of moving air from a hair dryer because of the difference in _____ within the fluid and outside of the moving air.
What is pressure?
400
States that the buoyant force on an object is equal to the weight of the fluid that is displaced
What is Archimede's Principle.
400
Why aren't deep-sea fish crushed by the tremendous pressure they experience?
The pressure of the fluids within the fish equals the pressure exerted by the water on the outside of the fish.
500
To increase the pressure, two variables can be changed. Either you can increase the _______ or decrease the _______.
What force and area?
500
Large metal ships can float on water, even though the density of their material is much greater than that of water. What allows them to float?
What is a large displaced volume of water?
500
Explain why squeezing one end of an inflated balloon caused the end to bulge out..
The force that is applied to the confined fluid, in this case the air in the balloon, causes the pressure to be equally transmitted to all the fluid.
500
Fluid pressure is exerted evenly in all directions ,which explains why?
A. Some objects float
B. birds and airplanes can fly
C. bubbles are round
D. objects seem to weigh less in water
Bubbles are round
500
You shake a closed can of pop. Why does the pop 'explode' as you pop the tab on the can?
When you shake the can you increase the pressure in the can. When the can is opened the gas and liquid escape quickly until the pressure inside the can is equal to the pressure outside the can.