WorksheetsAP Physics: Pressure & Buoyancy
Total questions: 19
Worksheet time: 11mins
A rock of irregular shape sinks to the bottom of water when placed in it. Which two of the following, when used together, could be used to determine its density?
Measure the mass of the rock on a scale
Measure the mass of the beaker of water on a scale
Place the rock in a beaker and measure the change in height of the water
Place the rock in a beaker and measure the height of the water above it
You fill a glass with ice and water until the the water level is exactly at the glass's rim. As the ice melts, the water level...
rises and water spills out of the glass
remains the same
drops at first and then rises until a little water spills out
A simple U-tube or manometer has a side filled with water and another with an unknown blue fluid. Which side has the larger absolute pressure at the bottom of its column?
left
right
equal
In the same system, which fluid has the greater density?
water
unknown fluid
both have the same density
Rank the fluids in order from most dense to least dense.
Fluid A, oil, water, mercury
oil, water, Fluid A, mercury
mercury, oil, water, Fluid A
mercury, Fluid A, water, oil
A hydraulic lift has a left and right column of different areas. Which side has the greater pressure?
A1
A2
Same
A hydraulic lift has a left and right column of different areas. Which side should a car be placed on to be lifted by the system with the least input force?
A1
A2
Same
A personal submarine is spherical and can reach depths of up to 1 mile below the surface of the water. Which statement is true?
The pressure is equal on all sides of the sphere
The pressure is slightly larger on the bottom of the sphere than the top
The pressure is slightly larger on the top of the sphere than the bottom
Two spheres have equal volume in the air. One is a balloon and the other is a solid wood sphere. When brought into the water, the balloon's radius is ________ the wood's radius.
less than
greater than
equal to
Now the same two spheres are made to be equal volume in the water. The moment you release them, which experiences the greater buoyant force?
wood
balloon
same buoyant force
Hot air is less dense than cold air. Could a hot air balloon be flown on Mars where there is no functional atmosphere?
yes, warm air always rises, especially in its weak gravitational field
yes, but the ballon woould have to be filled with helium instead of hot air
no, there is no cold air to displace so no buoyant force would excist
Students are competing to build the best cardboard boat. While they are in the water, the water level is marked on the side of the pool. If a third student jumps into the boat, the water level will ________.
rise
fall
stay the same
Now the students jump from the boat into the water. When this happens, the water level will ______ from its original height.
rise
fall
same
Finally, the students and boat are removed from the water. The water level will ______ from its original height.
rise
fall
same
Four blocks are suspended in water as shown. Which blocks experiences the greatest buoyant force?
A
B
C
D
Which string will have the largest tension?
A
B
C
D
Which block has the largest buoyant force when floating?
A
B
C
D
Which block has the smallest buoyant force?
A
B
C
D
Which block has the largest normal force?
A
B
C
D
