Question 1

If a battleship sinks in a canal lock,the water level in the lock will

Accepted Answer

A) rise. 
B) fall. 
C) remain unchanged. 
A) rise. 
B) fall. 
C) remain unchanged.

Question 2

Buoyant force is greatest on a submerged

Accepted Answer

A) 1-cubic centimeter block of lead. 
B) 1-cubic centimeter block of aluminum. 
C) is the same on each 
A) 1-cubic centimeter block of lead. 
B) 1-cubic centimeter block of aluminum. 
C) is the same on each

Question 3

The reason a life jacket helps you float is

Accepted Answer

A) the jacket makes you weigh less. 
B) the jacket has the same density as an average human. 
C) the jacket repels water. 
D) if you sink,the jacket sinks. 
E) the density of both you and the jacket together is less than your density alone. 
A) the jacket makes you weigh less. 
B) the jacket has the same density as an average human. 
C) the jacket repels water. 
D) if you sink,the jacket sinks. 
E) the density of both you and the jacket together is less than your density alone.

Question 4

Two life preservers have identical volumes,but one is filled with Styrofoam while the other is filled with sand.When the two life preservers are fully submerged,the buoyant force is greater on the one filled with

Accepted Answer

A) Styrofoam. 
B) sand. 
C) same on each as long as their volumes are the same 
A) Styrofoam. 
B) sand. 
C) same on each as long as their volumes are the same

Question 5

A hydraulic press multiplies a force by 100.This multiplication is done at the expense of

Accepted Answer

A) energy,which is divided by 100. 
B) the distance through which the force acts. 
C) the time through which the force acts,which is multiplied by 100. 
D) the mechanism providing the force. 
E) none of these 
A) energy,which is divided by 100. 
B) the distance through which the force acts. 
C) the time through which the force acts,which is multiplied by 100. 
D) the mechanism providing the force. 
E) none of these

Question 6

To multiply the input force of a hydraulic lift ,the input end should be the one having the

Accepted Answer

A) larger diameter piston. 
B) smaller diameter piston. 
C) Relative piston sizes don't matter. 
A) larger diameter piston. 
B) smaller diameter piston. 
C) Relative piston sizes don't matter.

Question 7

Blood pressure is normally greater in your

Accepted Answer

A) ears. 
B) feet. 
C) same in each 
A) ears. 
B) feet. 
C) same in each

Question 8

There is a legend of a Dutch boy who bravely held back the Atlantic Ocean by plugging a leak near the top of a dike with his finger until help arrived.Which of the following is most likely?

Accepted Answer

A) The huge size of the Atlantic Ocean makes this impossible. 
B) Although the force on his finger would have been huge,the pressure would have been small enough for this to occur. 
C) The force on his finger would have been less than 1 N. 
D) Both the force and pressure on his finger would have been great,but not too great for a public-spirited Dutch lad. 
E) none of these 
A) The huge size of the Atlantic Ocean makes this impossible. 
B) Although the force on his finger would have been huge,the pressure would have been small enough for this to occur. 
C) The force on his finger would have been less than 1 N. 
D) Both the force and pressure on his finger would have been great,but not too great for a public-spirited Dutch lad. 
E) none of these

Question 9

A lobster crawls onto a bathroom scale submerged at the bottom of the ocean.Compared to its weight above the surface,the lobster will have an apparent weight under water that is

Accepted Answer

A) greater. 
B) less. 
C) the same. 
A) greater. 
B) less. 
C) the same.

Question 10

When a boat sails from fresh water to salt water,the boat will float

Accepted Answer

A) lower in the water. 
B) higher in the water. 
C) at the same water level. 
A) lower in the water. 
B) higher in the water. 
C) at the same water level.

Question 11

The ratio of output force to input force of a hydraulic press will be equal to the ratio of the output and input piston

Accepted Answer

A) diameters. 
B) areas. 
C) radii. 
D) all of these 
E) none of these 
A) diameters. 
B) areas. 
C) radii. 
D) all of these 
E) none of these

Question 12

If a weighted air-filled balloon sinks in deep water,it will

Accepted Answer

A) likely sink to an equilibrium level before reaching bottom. 
B) likely burst if water pressure is great enough. 
C) become less dense as it sinks. 
D) be acted on by a continuously decreasing buoyant force. 
E) none of these 
A) likely sink to an equilibrium level before reaching bottom. 
B) likely burst if water pressure is great enough. 
C) become less dense as it sinks. 
D) be acted on by a continuously decreasing buoyant force. 
E) none of these

Question 13

Surface tension is a direct result of

Accepted Answer

A) viscosity. 
B) Archimedes' principle. 
C) Bernoulli's principle. 
D) adhesive forces between molecules in a liquid or solid. 
E) cohesive forces between molecules in a liquid. 
A) viscosity. 
B) Archimedes' principle. 
C) Bernoulli's principle. 
D) adhesive forces between molecules in a liquid or solid. 
E) cohesive forces between molecules in a liquid.

Question 14

A boat loaded with scrap iron floats in a swimming pool.When the iron is thrown overboard,the pool level will

Accepted Answer

A) rise. 
B) fall. 
C) remain unchanged. 
A) rise. 
B) fall. 
C) remain unchanged.

Question 15

A block of wood with a piece of iron tied to the top of it floats in a bucket of water.If the wood and iron are turned over so that the iron is submerged beneath the wood,the water level at the side of the bucket

Accepted Answer

A) rises. 
B) falls. 
C) remains the same. 
A) rises. 
B) falls. 
C) remains the same.

Question 16

The density of a submerged submarine is about the same as the density of

Accepted Answer

A) a crab. 
B) iron. 
C) a floating submarine. 
D) water. 
E) none of these 
A) a crab. 
B) iron. 
C) a floating submarine. 
D) water. 
E) none of these

Question 17

A completely submerged object always displaces its own

Accepted Answer

A) volume of fluid. 
B) weight of fluid. 
C) density of fluid. 
D) all of these 
E) none of these 
A) volume of fluid. 
B) weight of fluid. 
C) density of fluid. 
D) all of these 
E) none of these

Question 18

A row boat containing a barrel of water floats in a swimming pool.When the water in the barrel is poured overboard,the swimming pool level will

Accepted Answer

A) rise. 
B) fall. 
C) remain unchanged. 
A) rise. 
B) fall. 
C) remain unchanged.

Question 19

A rock suspended by a string weighs 5 N out of water and 3 N when submerged.What is the buoyant force on the rock?

Accepted Answer

A) 8 N 
B) 5 N 
C) 3 N 
D) 2 N 
E) none of these 
A) 8 N 
B) 5 N 
C) 3 N 
D) 2 N 
E) none of these

Question 20

The pressure in a liquid depends on liquid

Accepted Answer

A) density. 
B) depth. 
C) both of these 
D) neither of these 
A) density. 
B) depth. 
C) both of these 
D) neither of these

Exam 13: Liquids

If a battleship sinks in a canal lock,the water level in the lock will

Buoyant force is greatest on a submerged

The reason a life jacket helps you float is

Two life preservers have identical volumes,but one is filled with Styrofoam while the other is filled with sand.When the two life preservers are fully submerged,the buoyant force is greater on the one filled with

A hydraulic press multiplies a force by 100.This multiplication is done at the expense of

To multiply the input force of a hydraulic lift ,the input end should be the one having the

Blood pressure is normally greater in your

There is a legend of a Dutch boy who bravely held back the Atlantic Ocean by plugging a leak near the top of a dike with his finger until help arrived.Which of the following is most likely?

A lobster crawls onto a bathroom scale submerged at the bottom of the ocean.Compared to its weight above the surface,the lobster will have an apparent weight under water that is

When a boat sails from fresh water to salt water,the boat will float

The ratio of output force to input force of a hydraulic press will be equal to the ratio of the output and input piston

If a weighted air-filled balloon sinks in deep water,it will

Surface tension is a direct result of

A boat loaded with scrap iron floats in a swimming pool.When the iron is thrown overboard,the pool level will

A block of wood with a piece of iron tied to the top of it floats in a bucket of water.If the wood and iron are turned over so that the iron is submerged beneath the wood,the water level at the side of the bucket

The density of a submerged submarine is about the same as the density of

A completely submerged object always displaces its own

A row boat containing a barrel of water floats in a swimming pool.When the water in the barrel is poured overboard,the swimming pool level will

A rock suspended by a string weighs 5 N out of water and 3 N when submerged.What is the buoyant force on the rock?

The pressure in a liquid depends on liquid

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