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Magnets and F&M Review

Total questions: 99

Worksheet time: 1hrs 8mins

Name
Class
Date
1.

What happens to the energy in a system of magnets when the magnetic force causes two magnets to move?

a)

The potential energy in the system increases.

b)

The kinetic energy in the system decreases.

c)

Some of the potential energy is converted to kinetic energy.

d)

Some of the kinetic energy changes to potential energy.

2.

What is kinetic energy?

a)

The energy that is stored in an object or system

b)

To push objects away from each other

c)

The energy that an object has because it is moving

d)

To move from one object to another

3.

What is potential energy?

a)

The energy that an object has because it is moving

b)

The energy that is stored in an object or system

c)

To provide evidence against a claim

d)

One of the two opposite ends of a magnet

4.

What happens to the potential energy?

a)

The potential energy does not change because the magnets in the system do not change.

b)

The potential energy increases because Magnet 2 moves against the magnetic force.

c)

The potential energy decreases because Magnet 2 moves against the magnetic force.

d)

The potential energy decreases because Magnet 2 moves in the same direction as the magnetic force.

5.

Based on the magnetic field lines diagram, what will happen to these two sets of magnets?

a)

Set 1 magnets will repel, set 2 magnets will attract

b)

Set 1 magnets will attract, set 2 magnets will attract

c)

Set 1 magnets will attract, set 2 magnets will repel

d)

Both sets of magnets will repel

6.

Based on the magnetic field lines diagram, what will happen next with these sets of magnets?

a)

In both sets the magnets will attract.

b)

In both sets the magnets will repel.

c)

In Set 1 the magnets will repel and in Set 2 the magnets will attract.

d)

In Set 1 the magnets will attract and in Set 2 the magnets will repel.

7.

Will these magnets attract or repel?

a)

Attract

b)

Repel

8.

Will these magnets attract or repel?

a)

Attract

b)

Repel

9.

Will these magnets attract or repel?

a)

Attract

b)

Repel

c)

Neither

d)

Both

10.

What will happen when these magnets are let go?

a)

The magnets will not move because they are not touching.

b)

The magnets will move closer to each other because the magnetic force will pull them together.

c)

The magnets will move away from each other because the magnets are not touching.

d)

The magnets will move away from each other because the magnet force will push them apart.

11.
Which way will the magnets move after they are released?
a)
Towards each other
b)
Away from each other
c)
Not enough information
12.

What will happen next?

a)

The trains will move closer because the magnetic force will pull the trains together.

b)

The trains will not move because the magnets are not touching.

c)

The trains will move away from each other because the magnetic force will push the trains apart.

d)

The trains will move away from each other because the magnets are not touching.

13.
A child puts two magnetic toy trains next to each other on a track. What will happen next, and why?
a)
The trains will not move.
b)
The trains will move away from each other.
c)
The trains will move closer to each other.
d)
Not enough information.
14.

How does magnetic force affect the energy in a system of magnets when the magnets are released and begin to move?

a)

The magnetic force increases the potential energy in the system.

b)

The magnetic force decreases the potential energy in the system.

c)

The magnetic force changes kinetic energy into potential energy.

d)

The magnetic force changes potential energy into kinetic energy.

15.

Which move will result in the greatest potential energy increase?

a)

Moving the cart on Track 1 one space to the right.

b)

Moving the cart on Track 2 one space to the left.

c)

Moving the cart on Track 2 one space to the right.

d)

All moves will result in the same increase in potential energy.

16.
Which picture has the most potential energy?
a)
Picture A
b)
Picture B
17.

What happens to the potential energy in the system, when the magnetic train is moved away from the stationary magnet?

a)

The potential energy increases because the magnet is moved against the magnet force.

b)

The potential energy decreases because the magnet is moved against the magnet force.

18.
How can magnets cause objects to have kinetic energy?
a)
A magnetic force can convert kinetic energy stored in a magnetic field to potential energy.
b)
Kinetic energy can convert potential energy stored in a gravitational field.
c)
A magnetic energy can convert potential energy stored in a gravitational field to kinetic energy.
d)
A magnetic force can convert potential energy stored in a magnetic field to kinetic energy.
19.
Why would the two magnets move together?
a)
There is too much force.
b)
The magnets are not touching.
c)
The magnetic force pushes the trains apart.
d)
The magnetic force will pull the trains together.
20.
The ability to make things move or change
a)
Transfer
b)
Energy
c)
Convert
d)
Repel
21.
Which type of energy will be present in the scenario shown below?
a)
Potential
b)
Kinetic
c)
Neither
22.
Which of the images will show an increase in potential energy stored in the magnetic field?
a)
A
b)
B
23.
How is energy being transferred in the scenario shown below?
a)
Potential --> Kinetic
b)
Kinetic --> Potential
c)
Kinetic --> Kinetic
d)
Neither
24.
How does a system of magnets store potential energy in the magnetic field?
a)
The energy used to move a magnet with (same direction as) a magnetic force.
b)
The energy used to move a magnet against (opposite direction as) a magnetic force.
c)
Magnets get their potential energy from kinetic energy.
25.
What will happen when these magnets are brought close together?
a)
They will attract each other.
b)
They will repel each other.
c)
Both magnets will turn to the left
d)
Both magnets will turn to the right
26.
Where is the force of attraction the strongest on a magnet?
a)
at the poles
b)
in the middle
c)
above the magnet
d)
below the magnet
27.
Earth acts like a giant magnet because its center is made up MOSTLY of
a)

granite

b)
limestone
c)
iron
d)
nickel
28.
Look closely at the magnetic field lines. Will these magnets attract or repel?
a)
Attract
b)
Repel
29.
Look closely at the magnetic field lines. Will these magnets attract or repel?
a)
Attract
b)
Repel
30.

A device that uses a free-moving magnetic needle to show direction is a:

a)

lodestone

b)

magnet

c)

compass

d)

magnetic field

31.

Which toy boat(s) experienced the strongest force when it was bumped? How do you know?

a)

The blue toy boat experienced the strongest force because it takes a stronger force to slow something down than it takes to speed something up.

b)

The gray toy boat experienced the strongest force because it had the fastest ending speed.

c)

The orange and gray toy boats experienced the strongest forces because they both gained the same force as they sped up. The blue boat lost force, so it slowed down.

d)

All three toy boats experienced the same strength force because they changed speed by the same amount.

32.

Which chair(s) experienced the strongest force when hit? How do you know?

a)

The blue and red chairs experienced the strongest force because they are both more massive than the yellow chair and they changed speed by the same amount.

b)

The red chair experienced the strongest force because it is as massive as the blue chair and has the highest ending speed.

c)

All three chairs experienced the same force because they changed speed by the same amount.

d)

The blue chair experienced the strongest force because it takes more force to slow an object than it takes to make it go faster.

33.

In which crash did the skateboard experience a stronger force? Why?

a)

The skateboard did not experience a force; only the shopping cart experienced a force in the crashes.

b)

Crash 2; the force on the cart was stronger in this crash, so the force on the skateboard was also stronger.

c)

The diagram doesn't tell you anything about the force on the skateboard. It only gives information about the force on the shopping cart.

d)

The skateboard experienced the same force in both crashes. The shopping cart changed speed by the same amount in each crash, so the force on the skateboard was the same each time.

34.

Sandra pushed a wooden block and it slid across the floor.
The wooden block gradually slowed down and stopped after moving 10 meters.
Why did the block stop moving?

a)

The floor exerted a force that is opposite to the direction of the block's motion.

b)

The block ran out of force.

c)

The floor absorbs force from the block.

d)

All objects stop moving because their natural state is to be still.

35.

Which golf ball(s) experienced the strongest force when hit? How do you know?

a)

The white and purple golf balls because they gained force, while the green golf ball lost force.

b)

The green golf ball because it takes a stronger force to slow something down than to speed something up.

c)

The green golf ball because it changed speed the most.

d)

The white golf ball because it has the fastest ending speed.

36.

Which puck(s) experienced the strongest force when hit? How do you know?

a)

All three hockey pucks experienced the same force because they changed speed by the same amount.

b)

The black hockey puck; it is more massive and it has the fastest ending speed.

c)

The purple hockey puck; it takes a stronger force to slow down a more massive object than to speed it up.

d)

The black and purple hockey pucks; they have more mass than the green puck, but changed speed by the same amount.

37.

In which crash did the tennis ball experience a stronger force? How do you know?

a)

Crash 1; the force on the soccer ball was stronger in this crash, so the force on the tennis ball was also stronger.

b)

There was no force on the tennis ball. In each crash only the soccer ball experienced a force.

c)

It was the same in both crashes. The soccer ball changed speed by the same amount in each crash, so the force on the tennis ball was the same both times.

d)

The diagram doesn't tell you anything about the force on the tennis ball. It only gives information about the force on the soccer balls.

38.

Which skier(s) experienced the strongest force when bumped? How do you know?

a)

The skiers in the yellow and purple sweaters; they both gained the same force as they sped up, but the skier in the red sweater lost force and slowed down.

b)

The skier in the yellow sweater experienced the strongest force because he has the fastest ending speed.

c)

All three skiers experienced the same strength force because they changed speed by the same amount.

d)

The skier in the red sweater because it takes a stronger force to slow something down than to speed it up.

39.

Which soccer ball(s) experienced the strongest force? How do you know?

a)

All three soccer balls experienced the same force because they changed speed by the same amount.

b)

The orange soccer ball; it has more mass and the fastest ending speed.

c)

The blue soccer ball; it takes a stronger force to slow down a more massive object than to speed it up.

d)

The blue and orange soccer balls; they have more mass than the black soccer ball, but changed speed by the same amount.

40.

In which crash did the asteroid experience a stronger force? How do you know?

a)

Crash 2; the force on the planet was stronger in this crash, so the force on the asteroid was also stronger.

b)

There was no force on the asteroid. Only the moon and planet experienced a force in each crash.

c)

The diagram doesn't tell you anything about the force on the asteroid. It only gives information about the force on the planet and the moon.

d)

The force was the same in both crashes. The planet and moon changed speed by the same amount so that means the force on the asteroid was the same in both crashes.

41.

At dinner, Hans passed the salt shaker to his sister Jessica by sliding it across the wooden table.
The salt shaker gradually slowed down and stopped after moving 12 centimeters.
Why did the salt shaker stop moving?

a)

The salt shaker ran out of force.

b)

The table exerts a force that is opposite to the salt shaker's motion.

c)

The table absorbs force from the salt shaker.

d)

All objects stop moving because their natural state is to be still.

42.

Which curling stone(s) experienced the strongest force when hit? How do you know?

a)

The blue curling stone experienced the strongest force because it takes a stronger force to slow something down than it takes to speed something up.

b)

The blue curling stone experienced the strongest force because it changed speed the most.

c)

The orange curling stone experienced the strongest force because it has the fastest ending speed.

d)

The yellow and orange curling stones experienced the same strength force because they both gained force, but the blue curling stone lost force.

43.

Which skateboard(s) experienced the strongest force from Kristina's push? How do you know?

a)

The pink skateboard experienced the strongest force for two reasons: it is a more massive object and it has the fastest ending speed.

b)

The brown skateboard experienced the strongest force because it requires more force to slow an object down than to speed it up.

c)

The brown and pink skateboards experienced the strongest force because they are both more massive than the green skateboard and they changed speed by the same amount.

d)

All three skateboards experienced the same strength force because they changed speed by the same amount.

44.

In which crash did the cone experience a stronger force? How do you know?

a)

There was no force on the cone. In both crashes, only the hockey puck experienced a force.

b)

The diagram doesn't tell you anything about the force on the cone. It only gives information about the force on the pucks.

c)

It was the same force in both crashes; the hockey puck changed speed by the same amount in each crash, so the force on the cone was the same each time.

d)

Crash 1; the force on the black hockey puck was stronger in this crash, so the force on the cone was also stronger.

45.

A satellite was in two separate crashes. In both crashes, the satellite had the same mass. Engineers want to know about the speed and direction of the satellite after the crashes. Why would the crash affect the motion of the satellite, and which crash caused a greater change in motion for the satellite?

4 lines
46.

In a warehouse, the workers sometimes slide boxes along the floor to move them. Two boxes were sliding toward each other and crashed. The crash caused both boxes to change speed. Based on the information in the diagram, which statement is correct? In your answer, explain what the forces were like and why the boxes changed speed.

4 lines
47.

What is a collision?

a)

The moment when two objects hit each other.

b)

A push or pull that can change the motion of an object.

c)

to reach a conclusion using your observations and your background knowledge

d)

speed in a particular direction

48.

What is a force?

a)

The moment when two objects hit each other.

b)

A push or pull that can change the motion of an object.

c)

to reach a conclusion using your observations and your background knowledge

d)

speed in a particular direction

49.

What does it mean to infer?

a)

The moment when two objects hit each other.

b)

A push or pull that can change the motion of an object.

c)

to reach a conclusion using your observations and your background knowledge

d)

speed in a particular direction

50.

What is velocity?

a)

The moment when two objects hit each other.

b)

A push or pull that can change the motion of an object.

c)

to reach a conclusion using your observations and your background knowledge

d)

speed in a particular direction

51.

What is net force?

a)

The sum of all the forces acting on an object.

b)

A push or pull that can change the motion of an object.

c)

to reach a conclusion using your observations and your background knowledge

d)

speed in a particular direction

52.

What is friction?

a)

The sum of all the forces acting on an object.

b)

A push or pull that can change the motion of an object.

c)

a force between an object and the surface it is moving over

d)

speed in a particular direction

53.

What is a balanced force?

a)

The sum of all the forces acting on an object.

b)

A push or pull that can change the motion of an object.

c)

a force between an object and the surface it is moving over

d)

all the forces on an object equal out so that the object doesn't move

54.

What is an unbalanced force?

a)

Forces acting on an object are NOT equal - object moves

b)

A push or pull that can change the motion of an object.

c)

a force between an object and the surface it is moving over

d)

all the forces on an object equal out so that the object doesn't move

55.

What is inertia?

a)

Forces acting on an object are NOT equal - object moves

b)

An object's tendency to resist a change in its motion.

c)

a force between an object and the surface it is moving over

d)

all the forces on an object equal out so that the object doesn't move

56.

What is Newton's first law of motion?

a)

Things in motion tend to stay in motion, and things at rest tend to stay at rest, unless acted on by an external force

b)

Force = mass X acceleration

c)

For every action, there is an equal and opposite reaction

d)

Don't eat Fig Newtons with orange juice

57.

What is Newton's second law of motion?

a)

Things in motion tend to stay in motion, and things at rest tend to stay at rest, unless acted on by an external force

b)

Force = mass X acceleration

c)

For every action, there is an equal and opposite reaction

d)

Don't text under an apple tree

58.

To push objects away from one another

a)

repel

b)

refute

c)

force

d)

attract

59.

a line that connects opposite magnetic poles and represents the strength and direction of the magnetic field

a)

magnetic pole

b)

magnetic field

c)

electromagnet

d)

magnetic field line

60.

a type of magnet in which the magnetic field is produced by an electric current

a)

super magnet

b)

electromagnet

c)

static magnet

d)

magnetic field

61.

to move from one object to another or one place to another

a)

convert

b)

refute

c)

transfer

d)

kinetic energy

62.

the space around a magnet in which magnetic forces can act on objects

a)

magnetic field

b)

magnetic field line

c)

magnetic pole

d)

magnetic pull

63.

an object, diagram, or computer program that helps us understand something by making it simpler or easier to see

a)

system

b)

model

c)

question

d)

claim

64.

to pull objects toward one another

a)

repel

b)

convert

c)

attract

d)

transfer

65.

A system is a set of interacting parts forming a complex whole

a)

true

b)

false

66.

a push or a pull that can change the motion of an object

a)

attract

b)

system

c)

force

d)

convert

67.

the ability to make things move or change

a)

model

b)

system

c)

force

d)

energy

68.

to separate or set apart

a)

isolate

b)

convert

c)

transfer

d)

refute

69.

an object is converted when it changes from one type to another

a)

false

b)

true

70.

an electromagnet does not have a magnetic field produced by an electric current

a)

false

b)

true

71.

magnetic fields occur only inside a magnet

a)

true

b)

false

72.

a magnetic pole is found at either end of a magnet and is often called, "north" or "south"

a)

true

b)

false

73.

Fill in the blank: A current in a wire produces a _______________ _____________ around the wire.

a)

big circle

b)

electric square

c)

magnetic field

d)

green cube

74.

What is an electromagnet?

a)

Wire wrapped around a core.

b)

Wire next to a core.

c)

A magnet near a current.

d)

a magnet on top of a current.

75.

How do the number of coils in an electromagnet affect its strength?

a)

The coils affect an electromagnet's strength.

b)

The coils affect an electromagnet's direction.

c)

The coils affect an electromagnet's height.

d)

The coils affect an electromagnet's color.

76.

Which electromagnet will pick up LESS paper clips?

a)

A

b)

B

77.
This is a picture of a simple electromagnet. How can the electromagnet be made stronger?
a)
Add more coils of wire to the nail.
b)
Use a smaller battery.
c)
Reverse the poles of the magnet.
d)
Remove all the coils and the nail.
78.
What are the ends of a magnet called?
a)
East and west poles
b)
Left and Right ends
c)
North and South ends
d)
North and South poles
79.
Any material that attracts iron or materials containing iron is a(n) 
a)
A. electric generator
b)
B. solenoid
c)
C. magnet
d)
D. magnetic force
80.
What is Newton's First Law known as? The Law of
a)
Friction
b)
Mass
c)
Inertia
d)
Gravity
81.
What is Newton's First Law
a)
F=ma
b)
Every action has an equal and opposite reaction
c)
An object at rest stays at rest, an object in motion stays in motion. 
d)
Friction 
82.

Because of inertia, a resting object ________.

a)

will remain at rest

b)

will move at a constant speed

c)

will eventually move

d)

is unbalanced

83.

The first law of motion states that objects in motion will:

a)

stop

b)

accelerate

c)

stay in motion

d)

rest

84.

Newton's second law of motion states that an unbalanced force is equal to mass times:

a)

acceleration

b)

force

c)

motion

d)

inertia

85.

As more unbalanced force is applied to an object, its acceleration:

a)

stays the same

b)

decreases

c)

increases

86.
What is the formula for force?
a)
F=M/A
b)
F=A/M
c)
F=M*A
d)
F=M*F
87.

Newton's third law of motion states that for every action there is:

a)

an opposite, but equal reaction.

b)

an opposite and equal reaction.

c)

a reaction.

88.

A 20 kg bike accelerates at 10 m/s2. What was the force?

a)

30 Newtons

b)

2 Newtons

c)

200 Newtons

d)

10 Newtons

89.

An object in motion stops when.....

a)

It falls of an edge.

b)

it is acted upon by an outside force.

c)

It is eaten

d)

It never stops

90.

What was Newton's first name?

a)

Isaac

b)

Ivan

c)

Michael

d)

Iforgot

91.

The reason a ball bounces up when it hits the ground:

a)

The ball and ground repel each other.

b)

The ball exerts a force on the ground, and the ground exerts a force on the ball.

92.

What explains why objects resist changes in their state of motion?

a)

gravity

b)

inertia

c)

force

d)

friction

93.

What explains a quantity that has BOTH speed and direction?

a)

Inertia

b)

Force

c)

Speed

d)

Velocity

94.

The force that prevents a ball rolling on the ground from continuing on it's path forever is...

a)

Friction

b)

Gravity

c)

Inertia

95.
An empty truck and a fully loaded truck are next to each other at a traffic light. When the light turns green, the lighter truck increases speed more quickly. Which of these best explains this situations
a)
Newton's first law
b)
Newton's second law
c)
Newton's third law
d)
Conservation of momentum
96.
A person steps out of the boat and onto the dock.  As the person moves forward onto the dock, the boat moves backward.  Which statement best describes the backward motion of the boat as the person steps forward?
a)
For every action there is an equal and opposite reaction.
b)
Every mass exerts a force on every other mass.
c)
An object at rest tends to stay at rest.
d)
Friction opposes the motion of an object.
97.
The combination of all the forces acting on an object is the...
a)
net force
b)
action force
c)
reaction force
d)
balance force
98.
A force of 90N is applied to each cart below, which one will accelerate the fastest?
a)
Cart 1
b)
Cart 2
c)
Cart 3 
d)
Cart 4
99.

____ force is needed to move objects of larger mass.

a)

less

b)

equal

c)

more

d)

light

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