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6 Energy Summary

Total questions: 50

Worksheet time: 44mins

Name
Class
Date
1.

If a person weighing 645 N climbs up a ladder to a height of 4.55 m, then what is the increase in gravitational potential energy?

a)

2,935 J

b)

645 J

c)

45 J

d)

28,790 J

2.

If a monkey of mass 8 kg climbs up a tree and the tree is 10 meters high, then the potential energy of the monkey at the top of the tree will be 784 J.

a)

TRUE

b)

FALSE

3.

A stretched rubber band has potential energy.

a)

TRUE

b)

FALSE

4.

If Sara has a mass of 60 kg and lives on the fifth floor of her apartment 18 m above the ground, then what is her gravitational potential energy?

a)

177 J

b)

589 J

c)

10595 J

d)

1000 J

5.

The ability to move an electric charge from one point to another is

a)

electrical kinetic energy

b)

potential energy

c)

electric potential energy

d)

kinetic energy

6.

What is the unit of measurement for potential energy?

a)

Watts

b)

Joules

c)

Newtons

d)

Meters

7.
A leopard with a mass of 55.00 kg climbs 12.0 m up a tree. What is its GPE?
a)
6,468 J
b)
660 J
c)
4.58 J
d)
0.22 J
8.

The upper magnet is hung from the top of a box with a rubber band.

The bottom magnet is held in place at the bottom of a box.

What THREE potential energies are affecting this attraction in the picture?

a)

Gravitational, Electrical, Chemical

b)

Gravitational, Elastic, Chemical

c)

Magnetic, Elastic, Chemical

d)

Gravitational, Magnetic, Elastic

9.

True / False: The heavier an object is, the more potential energy the object has.

a)

True

b)

False

10.
Food has _______ potential energy that our bodies transform into kinetic energy.
a)
Elastic
b)
Nuclear 
c)
Gravitational
d)
Chemical
11.

Which object has elastic potential energy?

a)

a hanging leaf

b)

a burning coal

c)

a rolling ball

d)

a stretched bow

12.

Explain what happens to the potential energy of a rock as it falls off the side of a cliff.

a)

The kinetic energy decreases as the potential energy increases.

b)

The kinetic energy decreases as the potential energy increases.

c)

The potential energy decreases as the kinetic energy increases.

d)

The potential energy decreases as the kinetic energy decreases.

13.

If a 1800 kg car starts at rest and speeds up to 5.0 m/s, then the work done is 22,500 J. Is this statement true or false?

a)

TRUE

b)

FALSE

c)

Not enough information

d)

Irrelevant to kinetic energy

14.

If a 2000 kg roller coaster is rolling down a track with an instantaneous speed of 10 m/s, what is its kinetic energy?

a)

100000 J

b)

20000 J

c)

50000 J

d)

150000 J

15.

What is the amount of work required for a 60 kg runner to accelerate from rest to a velocity of 2 m/s?

a)

240 J

b)

0 J

c)

120 J

d)

60 J

16.

If a firefighter dropped a person onto the safety net, and right before the person hit the net they had a velocity of 12 m/s and 1800 J of kinetic energy, then what was the mass of the person?

a)

25 kg

b)

2.5 kg

c)

250 kg

d)

2500 kg

17.

If a 2.0 kg ball rolls down a hill and its kinetic energy is 25 J at the bottom of the hill, then what must the ball's velocity be at the bottom of the hill?

a)

5 m/s

b)

12.5 m/s

c)

25 m/s

d)

50 m/s

18.
As mass increases, KE ...
a)
increases
b)
decreases
c)
stays the same
19.

The faster an object moves, the _______________ kinetic energy it must carry.

a)

more

b)

less

c)

constant

d)

varying

20.

Which of the following is an example of kinetic energy?

a)

A compressed spring

b)

A car moving down a road

c)

A book on a shelf

d)

Water stored behind a dam

21.

Kinetic Energy is the energy of _________

a)

thermal

b)

movement

c)

potential

d)

atoms

22.

The metric unit for kinetic energy.

a)

Joule

b)

Newton

c)

Kilogram

d)

Watt

23.

What is the equation for calculating kinetic energy?

a)

12mv2\frac{1}{2}mv^2

b)

FΔxF\Delta x

c)

mv\frac{m}{v}

d)

mghmgh

24.

What is the equation for calculating gravitational potential energy?

a)

12mv2\frac{1}{2}mv^2

b)

FΔxF\Delta x

c)

mv\frac{m}{v}

d)

mghmgh

25.

What is energy?

a)

The force to move an object

b)

The motion of an object

c)

The ability to do work

d)

Magic rays of sunshine that come down when you're feeling blue

26.

A ball is tossed from rest, at point W. Where would this ball have the greatest amount of kinetic energy?

a)

point W

b)

point X

c)

point y

d)

point z

27.

The Law of Conservation of Energy states that the total energy of a system is always conserved. Is this statement:

a)

TRUE

b)

FALSE

28.

A 0.5 kg ball is at the top of a ramp which is 8 meters high. How much kinetic energy does the ball have at the bottom of the ramp?

a)

40 J

b)

4 J

c)

10 J

d)

400 J

29.

If an object is dropped from a certain height, does the total energy of that object keep decreasing until it becomes zero once it strikes the ground?

a)

TRUE

b)

FALSE

30.

If the velocity of an airplane is doubled, then its kinetic energy will increase by a factor of ____.

a)

8

b)

It will remain the same

c)

4

d)

2

31.

What energy transformations are occurring in this picture?

a)

gravitational potential --> sound --> thermal

b)

chemical potential --> mechanical --> elastic potential --> gravitational

c)

electrical --> sound --> thermal --> radiant

d)

chemical potential --> radiant --> thermal

32.

The sum of kinetic and potential energy in an object that is used to do work.

a)

Elastic Energy

b)

Sound Energy

c)

Magnetic Energy

d)

Mechanical Energy

33.
What is the transformation shown in the picture?
a)
chemical to electrical to radiant
b)
electrical to chemical to radiant
c)
radiant to chemical to electrical
d)
chemical to radiant to electrical
34.
Wind turbines and windmills convert (or change) what energy to another?
a)
Kinetic to electric
b)
Gravitational potential to electric
c)
Mechanical to potential
d)
Thermal to sound
35.

Photosynthesis goes through two energy transformations. What are the transformations?

a)

radiant

chemical

b)

chemical

radiant

c)

electrical

nuclear

d)

radiant

sound

36.

What energy transformation occurs in the chameleon as it quickly launches its tongue to catch an insect?

a)

Radiant --> Chemical

b)

Thermal --> Chemical

c)

Chemical --> Mechanical

d)

Mechanical --> Chemical

37.
A television works by transforming electrical energy into what other kinds of energy?
a)
Light, thermal, and sound
b)
Thermal, chemical, and solar
c)
Sound, mechanical, and electrical
d)
Light, chemical, and mechanical
38.

The dotted line on the chart shows the energy of the Skater, where could she be on the track?

a)

A

b)

B

c)

C

d)

D

e)

E

39.

At which point on the track is the skater's potential energy likely at its maximum according to the energy graph?

a)

Point A

b)

Point B

c)

Point C

d)

Point D

e)

Point E

40.

What does the total energy line (Yellow) in the graph indicate about the skater's energy throughout the track?

a)

It increases over time

b)

It decreases over time

c)

It remains constant

d)

It fluctuates wildly

41.

The bar graph shows the energy of the Skater, where could she be on the track?

a)

Point A

b)

Point B

c)

Point C

d)

Point D

e)

Point E

42.

Based on the pie graph showing the energy distribution of the skater, at which point on the track is the skater likely to have the highest kinetic energy (KE)?

a)

Point A

b)

Point B

c)

Point C

d)

Point D

43.

If the skater is at point 4, which chart could represent the skater's energy?

a)

A. Entirely blue pie chart

b)

B. Mostly blue with a small green segment

c)

C. A little more green than blue

d)

D. Mostly green with a small blue segment.

44.

If a heavier skater is at point 4, how would the pie chart change?

a)

No changes

b)

The entire pie would be larger

c)

The PE part would be larger

d)

The KE part would be larger

45.

As the ball skater moves from point 4, in which direction is the skater rolling according to the diagram?

a)

A. Up

b)

B. Down

c)

C. Not Enough Information

46.

The Energy chart of a skater is shown. How would you describe his speed based on the energy distribution in the chart?

a)

He is at his maximum speed

b)

He is stopped

c)

He is going his average speed

d)

He is going slow

e)

He is going fast

47.

Based on the energy chart of the skater, how would you describe his speed?

a)

He is at his maximum speed

b)

He is stopped

c)

He is going his average speed

d)

He is going slow

e)

He is going fast

48.

Based on the energy distribution in the diagrams, which letter corresponds to the object that is moving the fastest?

a)

A

b)

B

c)

C

d)

None of the above

49.

Which letter represents the object with the highest potential energy?

a)

A

b)

B

c)

C

d)

None of the above

50.

Which letter represents the object that has stopped?

a)

A

b)

B

c)

C

d)

None of the above

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