Question 1

A very light-weight horizontal loop of wire is suspended from a fine spring,lowered into water,and then raised to the surface.Any further attempt to raise it causes the spring to

Accepted Answer

A) stretch. 
B) contract. 
C) stay the same. 
A) stretch. 
B) contract. 
C) stay the same. A

Question 2

Buoyant force is greatest on a submerged

Accepted Answer

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

Question 3

Buoyant force is greatest on a submerged

Accepted Answer

A) 10-newton block of lead. 
B) 10-newton block of aluminum. 
C) is the same on each 
A) 10-newton block of lead. 
B) 10-newton block of aluminum. 
C) is the same on each B

Question 4

Lobsters live on the bottom of the ocean.The density of a lobster is

Accepted Answer

A) greater than the density of sea water. 
B) equal to the density of sea water. 
C) less than the density of sea water. 
A) greater than the density of sea water. 
B) equal to the density of sea water. 
C) less than the density of sea water.

Question 5

Use the following figure to answer the question:  
-A dam is thicker at the bottom than at the top partly because

Accepted Answer

A) water is denser at deeper levels. 
B) water pressure is greater with increasing depth. 
C) surface tension exists only on the surface of liquids. 
D) it looks better. 
E) none of these 
A) water is denser at deeper levels. 
B) water pressure is greater with increasing depth. 
C) surface tension exists only on the surface of liquids. 
D) it looks better. 
E) none of these

Question 6

Water pressure is greatest against the

Accepted Answer

A) top of a submerged object. 
B) bottom of a submerged object. 
C) sides of a submerged object. 
D) is the same against all surfaces 
E) none of these 
A) top of a submerged object. 
B) bottom of a submerged object. 
C) sides of a submerged object. 
D) is the same against all surfaces 
E) none of these

Question 7

The pressure at the bottom of a jug filled with water does NOT depend on

Accepted Answer

A) the acceleration due to gravity. 
B) water density. 
C) the height of the liquid. 
D) surface area of the water. 
E) none of these 
A) the acceleration due to gravity. 
B) water density. 
C) the height of the liquid. 
D) surface area of the water. 
E) none of these

Question 8

Three icebergs are each floating in bathtubs filled to the brim with water.Iceberg A has large air bubbles in it.Iceberg B has unfrozen water in it.Iceberg C has an iron railroad spike in it.When the ice melts,what happens?

Accepted Answer

A) The water level in C will decrease while the other two water levels will remain the same. 
B) Only the water in C will spill over. 
C) The water level in A will stay the same,while the other tubs will spill over. 
D) All the tubs spill over. 
E) All stay exactly the same. 
A) The water level in C will decrease while the other two water levels will remain the same. 
B) Only the water in C will spill over. 
C) The water level in A will stay the same,while the other tubs will spill over. 
D) All the tubs spill over. 
E) All stay exactly the same.

Question 9

The volume of water displaced by a floating 20-ton boat

Accepted Answer

A) is 20 cubic meters. 
B) is the volume of 20 tons of water. 
C) is the volume of the boat. 
D) depends on the shape of the ship's hull. 
E) none of these 
A) is 20 cubic meters. 
B) is the volume of 20 tons of water. 
C) is the volume of the boat. 
D) depends on the shape of the ship's hull. 
E) none of these

Question 10

One liter of water has a mass of

Accepted Answer

A) 1 kilogram. 
B) 14.7 grams. 
C) 500 grams. 
D) none of the above choices 
A) 1 kilogram. 
B) 14.7 grams. 
C) 500 grams. 
D) none of the above choices

Question 11

Surface tension of liquids

Accepted Answer

A) increases when wetting agents are added. 
B) decreases as the liquid temperature increases. 
C) is about the same for all liquids. 
D) results from a thin molecular membrane beneath the liquid surface. 
E) is the reason a steel ship will float. 
A) increases when wetting agents are added. 
B) decreases as the liquid temperature increases. 
C) is about the same for all liquids. 
D) results from a thin molecular membrane beneath the liquid surface. 
E) is the reason a steel ship will float.

Question 12

What is the buoyant force acting on a 10-ton ship floating in the ocean?

Accepted Answer

A) less than 10 tons 
B) 10 tons 
C) more than 10 tons 
D) depends on density of sea water 
A) less than 10 tons 
B) 10 tons 
C) more than 10 tons 
D) depends on density of sea water

Question 13

A heavy glass ball is placed in a pie pan that floats in a bucket.The water level at the side of the bucket is marked.Then the glass ball is removed and allowed to sink in the bucket.The water line at the side of the bucket is now

Accepted Answer

A) lower. 
B) the same. 
C) higher. 
A) lower. 
B) the same. 
C) higher.

Question 14

A fish normally displaces its own

Accepted Answer

A) volume of water. 
B) weight of water. 
C) both of these 
D) neither of these 
A) volume of water. 
B) weight of water. 
C) both of these 
D) neither of these

Question 15

If the part of an iceberg that extends above the water were suddenly removed,the

Accepted Answer

A) iceberg would sink. 
B) buoyant force on the iceberg would decrease. 
C) density of the iceberg would change. 
D) pressure on the bottom of the iceberg would increase. 
E) none of these 
A) iceberg would sink. 
B) buoyant force on the iceberg would decrease. 
C) density of the iceberg would change. 
D) pressure on the bottom of the iceberg would increase. 
E) none of these

Question 16

When holes are drilled through the wall of a water tower ,water will spurt out the greatest horizontal distance from the hole closest to

Accepted Answer

A) the bottom of the tower. 
B) the middle of the tower. 
C) the top of the tower. 
D) The horizontal distance will be the same for all holes. 
A) the bottom of the tower. 
B) the middle of the tower. 
C) the top of the tower. 
D) The horizontal distance will be the same for all holes.

Question 17

The mass of a cubic meter of water is

Accepted Answer

A) 1 kg. 
B) 10 kg. 
C) 100 kg. 
D) 1000 kg. 
E) 9800 N. 
A) 1 kg. 
B) 10 kg. 
C) 100 kg. 
D) 1000 kg. 
E) 9800 N.

Question 18

In a hydraulic-press operation,it is impossible for the

Accepted Answer

A) output displacement to exceed the input displacement. 
B) force output to exceed the force input. 
C) energy output to exceed the energy input. 
D) output piston's speed to exceed the input piston's speed. 
E) none of these 
A) output displacement to exceed the input displacement. 
B) force output to exceed the force input. 
C) energy output to exceed the energy input. 
D) output piston's speed to exceed the input piston's speed. 
E) none of these

Question 19

When an ice cube in a glass of water melts,the water level

Accepted Answer

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

Question 20

A floating ice cube contains small pieces of iron.During melting the water level will

Accepted Answer

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

Exam 13: Liquids

A very light-weight horizontal loop of wire is suspended from a fine spring,lowered into water,and then raised to the surface.Any further attempt to raise it causes the spring to

Buoyant force is greatest on a submerged

Buoyant force is greatest on a submerged

Lobsters live on the bottom of the ocean.The density of a lobster is

Use the following figure to answer the question: -A dam is thicker at the bottom than at the top partly because

Water pressure is greatest against the

The pressure at the bottom of a jug filled with water does NOT depend on

Three icebergs are each floating in bathtubs filled to the brim with water.Iceberg A has large air bubbles in it.Iceberg B has unfrozen water in it.Iceberg C has an iron railroad spike in it.When the ice melts,what happens?

The volume of water displaced by a floating 20-ton boat

One liter of water has a mass of

Surface tension of liquids

What is the buoyant force acting on a 10-ton ship floating in the ocean?

A heavy glass ball is placed in a pie pan that floats in a bucket.The water level at the side of the bucket is marked.Then the glass ball is removed and allowed to sink in the bucket.The water line at the side of the bucket is now

A fish normally displaces its own

If the part of an iceberg that extends above the water were suddenly removed,the

When holes are drilled through the wall of a water tower ,water will spurt out the greatest horizontal distance from the hole closest to

The mass of a cubic meter of water is

In a hydraulic-press operation,it is impossible for the

When an ice cube in a glass of water melts,the water level

A floating ice cube contains small pieces of iron.During melting the water level will

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