Question 1

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

Accepted Answer

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

Question 2

A scale from which a rock is suspended reads 5 N when the rock is out of water and 3 N when the rock is submerged.The density of the rock is

Accepted Answer

A) the density of water. 
B) 1)5 times the density of water. 
C) 2)5 times the density of water. 
D) 3)5 times the density of water. 
A) the density of water. 
B) 1)5 times the density of water. 
C) 2)5 times the density of water. 
D) 3)5 times the density of water.

Question 3

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

Accepted Answer

A) near the surface. 
B) halfway to the bottom. 
C) near the bottom. 
D) Buoyant force does not depend on depth. 
A) near the surface. 
B) halfway to the bottom. 
C) near the bottom. 
D) Buoyant force does not depend on depth.

Question 4

When an object is partly or wholly immersed in a liquid,it is buoyed up

Accepted Answer

A) by a force equal to its own weight. 
B) by a force equal to the weight of liquid displaced. 
C) and floats because of Archimedes principle. 
D) but nevertheless sinks. 
E) none of these 
A) by a force equal to its own weight. 
B) by a force equal to the weight of liquid displaced. 
C) and floats because of Archimedes principle. 
D) but nevertheless sinks. 
E) none of these

Question 5

Two equal sized buckets are filled to the top with water.One of the buckets has a piece of wood floating in it,making its total weight

Accepted Answer

A) less than the weight of the other bucket. 
B) equal to the weight of the other bucket. 
C) more than the weight of the other bucket. 
A) less than the weight of the other bucket. 
B) equal to the weight of the other bucket. 
C) more than the weight of the other bucket.

Question 6

An ice cube floating in a glass of water contains many air bubbles.When the ice melts,the water level will

Accepted Answer

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

Question 7

When you float in fresh water,the buoyant force that acts on you is equal to your weight.When you float higher in the high-density water of the Dead Sea,the buoyant force that acts on you is

Accepted Answer

A) greater than your weight. 
B) less than your weight. 
C) equal to your weight. 
A) greater than your weight. 
B) less than your weight. 
C) equal to your weight.

Question 8

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

Accepted Answer

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

Question 9

The reason that buoyant force acts upward on a submerged object is that

Accepted Answer

A) it acts in a direction to oppose gravity. 
B) if it acted downward,nothing would float. 
C) the weight of fluid displaced reacts with an upward force. 
D) upward pressure against the bottom is greater than downward pressure against the top of the submerged object. 
A) it acts in a direction to oppose gravity. 
B) if it acted downward,nothing would float. 
C) the weight of fluid displaced reacts with an upward force. 
D) upward pressure against the bottom is greater than downward pressure against the top of the submerged object.

Question 10

When you put a stick in water and remove it,the stick is wet.When you put a stick in mercury and remove it,the stick is dry.The reason for this is that adhesive forces are greater

Accepted Answer

A) between stick and water. 
B) between the stick and mercury. 
C) between the mercury and the water. 
A) between stick and water. 
B) between the stick and mercury. 
C) between the mercury and the water.

Question 11

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

Accepted Answer

A) produces no buoyant force on the ice. 
B) has dissolved air. 
C) is warmer than the ice. 
D) is not displaced by the submerged ice. 
E) is less dense than ice. 
A) produces no buoyant force on the ice. 
B) has dissolved air. 
C) is warmer than the ice. 
D) is not displaced by the submerged ice. 
E) is less dense than ice.

Question 12

Compared to the density of water,the density of a fish is

Accepted Answer

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

Question 13

A block of wood half as dense as water floats with half its volume above water.A piece of iron is then tied on top so the wood floats with only 1/4 its volume above the surface.If the wood and iron are turned over so that the iron is submerged beneath the wood,then the volume of wood above the water surface will be

Accepted Answer

A) more than 1/4. 
B) less than 1/4. 
C) the same,1/4. 
D) There's no way to say. 
A) more than 1/4. 
B) less than 1/4. 
C) the same,1/4. 
D) There's no way to say.

Question 14

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 15

The pascal is a pressure unit equal to one

Accepted Answer

A) newton per square meter. 
B) kilogram per square meter. 
C) newton per square centimeter. 
D) kilogram per square centimeter. 
E) square meter per newton. 
A) newton per square meter. 
B) kilogram per square meter. 
C) newton per square centimeter. 
D) kilogram per square centimeter. 
E) square meter per newton.

Question 16

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 worn by swimmers so that one swimmer floats with part of the preserver above water,and the other swimmer sinks,the buoyant force is actually greater on the life preserver filled with

Accepted Answer

A) Styrofoam. 
B) sand. 
C) same 
A) Styrofoam. 
B) sand. 
C) same

Question 17

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

Question 18

Compared to the buoyant force that acts on you when you float in fresh water,the buoyant force that acts on you when you float in the dense water of the Dead Sea is

Accepted Answer

A) less,because less of your volume is displaced. 
B) more,because of the greater density of fluid displaced. 
C) the same. 
A) less,because less of your volume is displaced. 
B) more,because of the greater density of fluid displaced. 
C) the same.

Question 19

Pumice is a volcanic rock that floats.Its density is

Accepted Answer

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

Question 20

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

Exam 13: Liquids

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

A scale from which a rock is suspended reads 5 N when the rock is out of water and 3 N when the rock is submerged.The density of the rock is

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

When an object is partly or wholly immersed in a liquid,it is buoyed up

Two equal sized buckets are filled to the top with water.One of the buckets has a piece of wood floating in it,making its total weight

An ice cube floating in a glass of water contains many air bubbles.When the ice melts,the water level will

When you float in fresh water,the buoyant force that acts on you is equal to your weight.When you float higher in the high-density water of the Dead Sea,the buoyant force that acts on you is

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

The reason that buoyant force acts upward on a submerged object is that

When you put a stick in water and remove it,the stick is wet.When you put a stick in mercury and remove it,the stick is dry.The reason for this is that adhesive forces are greater

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

Compared to the density of water,the density of a fish is

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

The pascal is a pressure unit equal to one

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

Compared to the buoyant force that acts on you when you float in fresh water,the buoyant force that acts on you when you float in the dense water of the Dead Sea is

Pumice is a volcanic rock that floats.Its density is

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

About Science

Newtons First Law of Motion: Inertia

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Newtons Second Law of Motion: Force and Acceleration

Newtons Third Law of Motion: Action and Reaction

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Atomic Nature of Matter

Solids

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Temperature,heat,and Expansion

Heat Transfer

Change of Phase

Thermodynamics

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Electromagnetic Induction

Properties of Light

Color

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