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PS.EW.1 Conservation of energy

Total questions: 47

Worksheet time: 34mins

Name
Class
Date
1.
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  
2.
A change from one form of energy to another is called ___________.
a)
work
b)
power
c)
mechanical
d)
energy transformations
3.
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
4.
When my velocity triples, my kinetic energy increases by ______ times.
a)
9
b)
 3 
c)
1.5
d)
4.5
5.

Which is Potential Energy?

a)

Radiant Energy

b)

Mechanical Energy

c)

Chemical Energy

d)

Sound Energy

6.

Heat Energy is called:

a)

Radiant Energy

b)

Chemical Energy

c)

Thermal Energy

d)

Mechanical Energy

7.

Which 2 types of energy does the object in the image use?

a)

Electric and Thermal

b)

Nuclear and Elastic

c)

Chemical and Mechanical

d)

Sound and Elastic

8.

Which is Kinetic Energy?

a)

Gravitational Energy

b)

Thermal Energy

c)

Elastic Energy

d)

Nuclear Energy

9.
What kind of energy is represented in the picture?
a)
Thermal
b)
Chemical
c)
Sound
d)
Nuclear
10.
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
11.
Stored energy is called ______ energy.
a)
Kinetic
b)
Potential
c)
Pacific
d)
Safe
12.

Potential energy depends on the ________ and ________ of the object.

a)

Height and weight

b)

Friction and weight

c)

Mass and Movement

d)

Height and speed

13.

What type of energy is being used?

a)

electromagnetic

b)

mechanical

c)

thermal

d)

sound

14.

What type of energy is being used?

a)

electromagnetic

b)

mechanical

c)

thermal

d)

sound

15.
The type of energy that allows us to hear is
a)
Mechanical
b)
Sound
c)
Light
d)
Electric
16.
What is energy?
a)
The ability to cause a change
b)
A force
c)
Electricity
d)
The ability to transform work
17.

What is the force that is pulling a skydiver towards the Earth?

a)

Elastic Force

b)

Electrical Force

c)

Magnetic Force

d)

Gravitational Force

18.
Which type of energy increases when you compress a spring?
a)
elastic potential energy
b)
kinetic energy
c)
radiant energy
d)
sound energy
19.

Elastic potential energy is energy stored in an object, such as a spring, due to the object being stretched or compressed. In which position is it most likely that the spring has lost its elastic potential energy?

a)

W

b)

Y

c)

X

d)

Z

20.

At which point does the ball has the greatest gravitational potential energy (GPE)?

a)

A

b)

G

c)

D

d)

C

e)

G

21.

Which would have the LEAST gravitational potential energy (GPE)?

a)

A ball sitting on the ground

b)

Moon viewed from the Earth

c)

An airplane flying 30,000 feet above the ground

d)

A rock sitting on top of Mt. Everest

22.

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

23.

Which picture is NOT an example of Chemical PE?

a)
b)
c)
d)
24.
Energy can be _____________ or changed from one type to another.
a)
destroyed
b)
transferred
c)
created
d)
ignored
25.

Which of the following is not an example of potential energy?

a)

A.chemical energy

b)

gravitational energy

c)

thermal energy

d)

electrical energy

26.

A friend claims that there are just two forms of energy: kinetic energy and gravitational potential energy. What is wrong with your friend's statement?

a)

There are only three types of energy.

b)

There is only one type of energy.

c)

There are only four types of energy.

d)

There are many more types of energy.

27.

As an object falls in a gravitational field, its speed increases. This is an example of potential energy transforming into what?

a)

A.chemical potential energy

b)

electrical potential energy

c)

elastic potential energy

d)

kinetic energy

28.

Which of the following best explains why an explosive charge in a cannon can cause a cannonball to fly out of the cannon with a high velocity?

a)

because chemical potential energy can convert to gravitational potential energy

b)

because chemical potential energy can convert to kinetic energy

c)

because chemical potential energy can convert to sound energy

d)

because chemical potential energy can convert to electric potential energy

29.

Chemical, gravitational, and elastic are examples of types of what?

a)

systems

b)

potential energy

c)

kinetic energy

d)

engines

30.

Calculate the kinetic energy of a 2.2 kg brick when it has a speed of 4.9 m/s.

a)

1.2 J

b)

17 J

c)

26 J

d)

220 J

31.

A student hangs a wood block from a spring. The student pulls the block downwards so the spring is stretched and holds the block at rest. What type of energy does the wood not have?

a)

chemical potential energy

b)

gravitational potential energy

c)

kinetic energy

d)

elastic potential energy

32.

Complete the following definition: potential energy is energy stored in a system due to its ________.

a)

velocity

b)

motion

c)

position

d)

acceleration

33.

An object moving in a gravitational field is observed to speed up. Explain why.

a)

The object has gained electrical potential energy.

b)

The object is falling in the gravitational field, so it has gained kinetic energy

c)

The object has gained chemical potential energy.

d)

.The object is rising in the gravitational field, so it has lost kinetic energy.

34.

What is the SI unit of energy?

a)

foot-pound

b)

newton

c)

watt

d)

joule

35.

On a roller coaster, where is maximum (or most) gravitational 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

36.
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
37.

What type of energy is in this slingshot? Click all that apply

a)

Kinetic

b)

Potential

c)

Stored mechanical energy

d)

Sound

38.
What is the form of energy that is created using heat?  This form of energy makes particles of matter move faster.
a)
light energy
b)
thermal energy
c)
chemical energy
d)
kinetic energy
39.
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
40.
Energy that is transferred by objects touching is called?
a)
Conduction
b)
Convection
c)
Induction
d)
Radiation
41.
What machine changes electrical energy into light and sound energy?
a)
battery
b)
lightbulb
c)
alarm clock
d)
apple
42.

Energy that can be stored mechanically in a compressed gas or liquid, a coiled spring, or a rubber band.

a)

Sound Energy

b)

Kinetic Energy

c)

Elastic Energy

d)

Nuclear Energy

43.

The stored potential energy in the nucleus of an atom.

a)

Elastic Energy

b)

Kinetic Energy

c)

Energy

d)

Nuclear Energy

44.

Energy stored in the bonds that hold together the atoms and molecules of all substances.

a)

Nuclear Energy

b)

Chemical Energy

c)

Light Energy

d)

Thermal Energy

45.

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

46.

A form of energy that is associated with vibrations of matter.

a)

Gravitational Energy

b)

Chemical Energy

c)

Sound Energy

d)

Energy

47.

Any type of stored energy.

a)

Potential Energy

b)

Magnetic Energy

c)

Rotational Energy

d)

Sound Energy

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