Question 1

Buoyant force acts upward on a submerged object because

Accepted Answer

A) it acts in a direction to oppose gravity. 
B) the weight of fluid displaced reacts with an upward force. 
C) pressure against its bottom is greater than pressure against its top. 
D) none of the above 
A) it acts in a direction to oppose gravity. 
B) the weight of fluid displaced reacts with an upward force. 
C) pressure against its bottom is greater than pressure against its top. 
D) none of the above

Question 2

While standing, your blood pressure is normally greatest in your

Accepted Answer

A) head. 
B) heart. 
C) feet. 
D) same in each 
A) head. 
B) heart. 
C) feet. 
D) same in each

Question 3

Compared to an empty ship, the same ship loaded with Styrofoam will float

Accepted Answer

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

Question 4

A hospital patient confined to bed will be less likely to develop bed sores with a

Accepted Answer

A) firm mattress. 
B) soft mattress. 
C) water bed. 
D) none of these will help. 
A) firm mattress. 
B) soft mattress. 
C) water bed. 
D) none of these will help.

Question 5

The attraction between unlike substances is called

Accepted Answer

A) adhesion. 
B) cohesion. 
C) depends on the substances. 
A) adhesion. 
B) cohesion. 
C) depends on the substances.

Question 6

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

Accepted Answer

A) goes down. 
B) is the same. 
C) rises. 
A) goes down. 
B) is the same. 
C) rises.

Question 7

When you observe the applications of pistons in lifting operations you're seeing

Accepted Answer

A) Pascal's principle in action. 
B) how energy can be increased. 
C) both of these 
D) neither of these 
A) Pascal's principle in action. 
B) how energy can be increased. 
C) both of these 
D) neither of these

Question 8

A large ice cube containing an iron railroad spike floats in a brim-full container of water. When the ice cube melts,

Accepted Answer

A) water spills over. 
B) no change in water level occurs. 
C) water level in the container drops. 
A) water spills over. 
B) no change in water level occurs. 
C) water level in the container drops.

Question 9

The least buoyant force on a rock is when it is submerged

Accepted Answer

A) near the surface. 
B) halfway to the bottom. 
C) near the bottom. 
D) none of the above 
A) near the surface. 
B) halfway to the bottom. 
C) near the bottom. 
D) none of the above

Question 10

A block of Styrofoam floats on water while a lead block of the same size block lies submerged in the water. The buoyant force is greatest on the

Accepted Answer

A) lead. 
B) Styrofoam. 
C) same for both 
A) lead. 
B) Styrofoam. 
C) same for both

Question 11

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

Question 12

What is the weight of water displaced by a 100-ton floating ship?

Accepted Answer

A) less than 100 tons 
B) 100 tons 
C) more than 100 tons 
D) 100 cubic meters 
E) depends on the ship's shape 
A) less than 100 tons 
B) 100 tons 
C) more than 100 tons 
D) 100 cubic meters 
E) depends on the ship's shape

Question 13

Pascal's principle applies to

Accepted Answer

A) liquids. 
B) gases. 
C) both of these 
D) none of these 
A) liquids. 
B) gases. 
C) both of these 
D) none of these

Question 14

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

Question 15

When a barrel of water in a rowboat in a swimming pool is poured overboard, the pool level

Accepted Answer

A) rises. 
B) falls. 
C) remains unchanged. 
A) rises. 
B) falls. 
C) remains unchanged.

Question 16

The buoyant force on an object is least when the object is

Accepted Answer

A) partly submerged. 
B) submerged near the surface. 
C) submerged near the bottom. 
D) none of the above 
A) partly submerged. 
B) submerged near the surface. 
C) submerged near the bottom. 
D) none of the above

Question 17

Ice cubes submerged at the bottom of a liquid indicate that the liquid

Accepted Answer

A) produces insufficient buoyant force on the ice. 
B) is warmer than the ice. 
C) is only partly displaced by the submerged ice. 
D) is less dense than ice. 
A) produces insufficient buoyant force on the ice. 
B) is warmer than the ice. 
C) is only partly displaced by the submerged ice. 
D) is less dense than ice.

Question 18

When you stand with only one of your feet on a weighing scale, the scale reading is

Accepted Answer

A) half. 
B) the same as with both feet. 
C) doubled. 
D) none of the above 
A) half. 
B) the same as with both feet. 
C) doubled. 
D) none of the above

Question 19

A lobster crawls onto a bathroom scale on the ocean floor. Its weight compared to its weight above the surface is

Accepted Answer

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

Question 20

Water pressure on a submerged object is greatest against its

Accepted Answer

A) top. 
B) bottom. 
C) sides. 
D) same against all surfaces 
E) none of the above 
A) top. 
B) bottom. 
C) sides. 
D) same against all surfaces 
E) none of the above

Exam 13: Liquids

Buoyant force acts upward on a submerged object because

While standing, your blood pressure is normally greatest in your

Compared to an empty ship, the same ship loaded with Styrofoam will float

A hospital patient confined to bed will be less likely to develop bed sores with a

The attraction between unlike substances is called

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

When you observe the applications of pistons in lifting operations you're seeing

A large ice cube containing an iron railroad spike floats in a brim-full container of water. When the ice cube melts,

The least buoyant force on a rock is when it is submerged

A block of Styrofoam floats on water while a lead block of the same size block lies submerged in the water. The buoyant force is greatest on the

The pressure in a liquid depends on liquid

What is the weight of water displaced by a 100-ton floating ship?

Pascal's principle applies to

One liter of water has a mass of

When a barrel of water in a rowboat in a swimming pool is poured overboard, the pool level

The buoyant force on an object is least when the object is

Ice cubes submerged at the bottom of a liquid indicate that the liquid

When you stand with only one of your feet on a weighing scale, the scale reading is

A lobster crawls onto a bathroom scale on the ocean floor. Its weight compared to its weight above the surface is

Water pressure on a submerged object is greatest against its

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