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Energy, Power and Work 2022 Review

Total questions: 55

Worksheet time: 55mins

Name
Class
Date
1.

What kind(s) of energy is(are) in a person climbing a ladder?

a)

Potential

b)

Kinetic

c)

Both

d)

Need the mass of the person to determine.

2.

As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy?

a)

The PE and KE increase and decrease together

b)

The PE decreases while the KE increases

c)

Impossible to know without knowing the mass

d)

The PE and the KE decrease and increase together.

3.
At which point is potential energy greatest?
a)
W
b)
X
c)
Y
d)
Z
4.

According to the Law of Conservation of energy, the amount of energy before and after a reaction must be the same. Which statement below is true?

a)

The total amount of energy is conserved

b)

The total amount of energy is less after a reaction

c)

The total amount of energy is more after a reaction

d)

Need the mass of the object to determine if energy is conserved.

5.

When velocity triples, kinetic energy increases by ______ times. KE =1/2mv2

a)

9

b)

3

c)

1.5

d)

4.5

6.

What is the Total Mechanical Energy at point A?

a)

500,000 J

b)

400,000 J

c)

200,000 J

d)

50,000 J

7.

What is the Kinetic Energy at point B?

a)

500,000 J

b)

400,000 J

c)

300,000 J

d)

50,000 J

8.

What is the Kinetic Energy at point C?

a)

500,000 J

b)

400,000 J

c)

300,000 J

d)

50,000 J

9.

What is the Kinetic Energy at point D?

a)

500,000 J

b)

250,000 J

c)

300,000 J

d)

50,000 J

10.

What is the GPE at point E?

a)

500,000 J

b)

250,000 J

c)

300,000 J

d)

100,000 J

11.

What is the GPE at point F?

a)

500,000 J

b)

250,000 J

c)

300,000 J

d)

0 J

12.

What is the KE at point F?

a)

500,000 J

b)

250,000 J

c)

300,000 J

d)

0 J

13.

When something is dropped, what type of energy transfer takes place?

a)

Kinetic -> Gravitational Potential

b)

Gravitational Potential -> Kinetic -> Sound

c)

Electrical -> Chemical

d)

Heat -> Nuclear

14.

If two marbles are rolled down a ramp from some height towards a container the _______ marble will move the container farther because it possess more _________ energy as it approaches the end of the ramp.

a)

heavier, kinetic

b)

heavier, potential

c)

lighter, kinetic

d)

lighter, potential

15.

The rollercoaster has both PE and KE, but where will it have more PE than KE?

a)

1

b)

2

c)

3

d)

4

e)

5

16.

A book has 200J of potential energy and then it falls onto the floor. After it hits the floor and is sitting still, what happened to the energy?

a)

It has disappeared.

b)

It goes into the floor and book as thermal energy and sound.

c)

It changes to chemical potential energy.

d)

It turns into gravity.

17.

The skateboarder shown above has a potential energy of 2,800 J and kinetic energy of 0J at a height of 4 meters. How much total mechanical energy will she have after 2 seconds? Neglect friction and air resistance.

a)

2000J

b)

1600J

c)

1400J

d)

2800J

18.

This graph depicts what type of relationship between kinetic and potential energy?

a)

Non-Linear

b)

Linear

c)

Inverse

d)

Poly-atomic

19.
A change from one form of energy to another is called ___________.
a)
work
b)
power
c)
mechanical
d)
energy transformations
20.
Power is defined as the
a)
force on an object times the distance the object moves.
b)
force on an object divided by the time the force acts.
c)
work done times the time taken to do that work.
d)
work done on an object divided by the time to do the work
21.
What is mechanical energy?
a)
It is what metal creates when heated.
b)
All potential and kinetic energy in a system.
c)
It is motion of all matter.
d)
Energy of momentum.
22.
Is energy always conserved?
a)
Always
b)
Often
c)
Never
d)
Sometimes
23.
What type of energy is in this picture?
a)
Kinetic
b)
Potential
c)
Chemical
d)
Sound
24.
Energy of motion is which type of energy?
a)
Potential
b)
Kinetic
c)
Sound
d)
Gravitational
25.
Work is:
a)
A transfer of energy by a force to move and object
b)
Something you get paid for
c)
Something you take home
d)
Makes you sweat
26.
On a roller coaster, where is maximum potential energy?
a)
At the bottom of a big hill
b)
When going around a corner
c)
When going upside down
d)
At the top of a big hill
27.
The formula for work is:
a)
d = r x t
b)
p = m x v
c)
f = m x a
d)
w = d x f
28.

What kind of energy does an object possess when it's resting on top of the hill?

a)

Potential Energy

b)

Chemical Energy

c)

Kinetic Energy

d)

All of the above

29.

What is the formula for Kinetic Energy?

a)

KE = mass x velocity

b)

KE= 1/2 x mass x velocity 2

c)

KE = mass x gravity x height

d)

KE = mass x velocity / 2

30.
Energy can be created.
a)
True
b)
False
31.
Roller coasters slow down because their energy disappears.  
a)
True 
b)
False
32.

What happens when the ball goes from the highest position to the lowest position

a)

PE and KE increases and decreases together

b)

Impossible to know without knowing the mass of the object

c)

the PE decreases while KE increases

33.
Energy is the ability _____________.
a)
to do work
b)
to power things
c)
to move objects
d)
to turn on a light
34.
Which of the following is a true statement about work?
a)
It measures how quickly an object accelerates 
b)
It measures how much effort is applied over a certain distance
c)
It measures the change in an object's rate of speed
d)
It measures how much time it takes to move a massive object
35.
True or false
You do work only when you exert a force on an object and move it
a)
true
b)
false
36.
Two factors that determine work are
a)
size of the force, and distance
b)
size of the force, and type of force
c)
mass, and distance
37.
units for work are
a)
netwons
b)
joules
c)
meters
d)
seconds
38.
The unit used to measure power is the 
a)
Watt
b)
Newton
c)
Joule
d)
Newton*meter
39.
Work divided by time equals...
a)
energy
b)
power
40.
The more POWER you use to move an object, the more work you do. 
a)
True
b)
False
41.

What energy is stored and waiting to be used?

a)

Kinetic Energy

b)

Potential Energy

42.
Niagara Falls is a good example of
a)
Kinetic energy being transformed into potential energy
b)
Potential energy being transformed into kinetic energy
c)
Energy being created
d)
Energy being destroyed
43.
 The law of conservation of energy states that when one form of energy is converted into another,
a)
Energy is destroyed in the process
b)
Energy is created in the process
c)
No energy is destroyed in the process
d)
Energy is lost in the process
44.
Which of the following has kinetic energy?
a)
a rock poised for a fall
b)
an archer's bow that is drawn back
c)
a rolling bowling ball
45.
Potential energy that depends on height is called
a)
Kinetic energy
b)
Elastic potential energy
c)
Nuclear energy
d)
Gravitational potential energy
46.

What is the unit for energy?

a)

joule

b)

newton

c)

watt

d)

m/s/s

47.

Which of the following is NOT a representation of the correct units for energy?

a)

J

b)

N∙m

c)

kg∙m2/s2

d)

W

48.

Mechanical energy is the sum of an object’s kinetic energy and any potential energies.

a)

True

b)

False

49.

What are two things required for work to be done? Check all that apply.

a)

Force

b)

Distance

c)

Constant Speed

d)

Momentum

50.

At which point on the roller coaster is the kinetic energy at its maximum?

a)

A

b)

B

c)

C

d)

D

51.

Two balls, a bowling ball and a baseball, are both traveling with a velocity of 10 m/s. Which ball has the greater kinetic energy?

a)

The bowling ball

b)

The baseball

c)

They have the same

d)

Neither has kinetic energy

52.

A water balloon is launched off a building. Where in its trajectory does it have the most kinetic energy?

a)

As soon as it is released

b)

At the peak of its trajectory

c)

Just before it hits the ground

d)

Once it comes to rest on the ground

53.

A roller coaster whose average speed is 32 m/s is at the top of a 72m hill and weighs 966N. At the top of the hill the coaster car has ___________________ energy.

a)

only kinetic energy

b)

only potential energy

c)

mostly kinetic energy

d)

both kinetic and potential energy

54.
The faster an object moves, the ________ kinetic energy it has. 
a)
more
b)
less
c)
none of the above
d)
all of the above 
55.

How could you increase the gravitational potential energy of an object without changing its mass and gravity?

a)

Make the object larger

b)

Lower the object towards the ground

c)

Raise the object farther off the ground

d)

Allow the object to roll on the ground

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