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Unit 6 - Energy Transformation - Review

Total questions: 54

Worksheet time: 41mins

Name
Class
Date
1.
When would an object have maximum elastic potential energy (EPE)?
a)
Just before it is stretched, bent or comressed
b)
When it is stretched, bent, or compressed to it's fullest
c)
When it is very high up in the air
d)
Just before it hits the ground or at it's lowest point while still moving
2.
When would an object have maximum gravitational potential energy (GPE)?
a)
Just before it is stretched, bent or comressed
b)
When it is stretched, bent, or compressed to it's fullest
c)
When it is very high up in the air
d)
Just before it hits the ground or at it's lowest point while still moving
3.
When would a falling object have maximum kinetic energy?
a)
Just before it is stretched, bent or comressed
b)
When it is stretched, bent, or compressed to it's fullest
c)
When it is very high up in the air
d)
Just before it hits the ground or at it's lowest point while still moving
4.
Which of these is a correct list of common objects that show elastic potential energy (EPE)?
a)
Food or Fuel Source
b)
Food or Rubber Band
c)
Fuel Source or Spring
d)
Rubber Band or Spring
5.
What kind of energy does a battery have?
a)
Potential
b)
Kinetic
c)
Electrical
d)
Thermal
6.
If it is a fuel source, or a food, or a battery, or it can be burned to produce a flame, then it must have _________ energy.
a)
Chemical Potential
b)
Elastic Potential 
c)
Nuclear Potential
d)
Gravitational Potential
7.
What do we call the energy of motion?
a)
Potential Energy
b)
Kinetic Energy
c)
Thermal Energy
d)
Electrical Energy
8.
Kinetic energy is _____________ energy.
a)
Stored
b)
Released
9.
Potential energy is _____________ energy.
a)
Stored
b)
Released
10.
What energy transformation occurs in a battery operated fan?
a)
Chemical → Potential → Mechanical
b)
Chemical → Electrical → Mechanical
c)
Electrical → Chemical → Mechanical
d)
Electrical → Mechanical → Potential
11.
Which of the following would be the best example of an electrical → mechanical transformation?
a)
An electric pencil sharpener
b)
A desk lamp
c)
A person digesting food
d)
A cell phone being charged
12.
As an object falls it gets closer to the ground meaning ________________.
a)
It is increasing in gravitational potential energy
b)
It is decreasing in gravitational potential energy
c)
It is creating kinetic energy
d)
It is destroying kinetic energy
13.
As an object is falling it gains speed meaning that _______________.
a)
It is increasing in kinetic energy
b)
It is decreasing in kinetic energy
c)
It is creating gravitational potential energy
d)
It is destroying gravitational potential energy
14.
The rock is dropped from the top of a tall building. When would half of the rock's potential energy have converted to kinetic?
a)
Just before being dropped
b)
Halfway down to the ground
c)
Just before hitting the ground 
d)
After hitting the ground and coming to a stop
15.
What does a wind turbine do?
a)
It transforms kinetic energy of the wind into electrical
b)
It converts thermal energy of the earth into electrical
c)
It converts kinetic energy of moving water into electrical
d)
It converts chemical energy of once living matter into electrical
16.
What does a hydroelectric power plant do?
a)
It transforms kinetic energy of the wind into electrical
b)
It converts thermal energy of the earth into electrical
c)
It converts kinetic energy of moving water into electrical
d)
It converts chemical energy of once living matter into electrical
17.
What does a geothermal power plant do?
a)
It transforms kinetic energy of the wind into electrical
b)
It converts thermal energy of the earth into electrical
c)
It converts kinetic energy of moving water into electrical
d)
It converts chemical energy of once living matter into electrical
18.
What does a biomass power plant do?
a)
It transforms kinetic energy of the wind into electrical
b)
It converts thermal energy of the earth into electrical
c)
It converts kinetic energy of moving water into electrical
d)
It converts chemical energy of once living matter into electrical
19.
Which of these objects matches the following energy transformation.
Chemical → Electrical → Sound, Light, Thermal 
a)
A cell phone
b)
A flashlight
c)
A compressed spring
d)
A hamburger
20.
What is mechanical energy?
a)
The energy of machines
b)
The energy of moving parts
c)
The energy of electrical devices
d)
The energy of gravity
21.
If an object is being plugged into the wall, what kind of energy does the object use?
a)
Electrical
b)
Mechanical 
c)
Thermal
d)
Electromagnetic 
22.
What happens when we digest food?
a)
Chemical energy is transformed into mechanical and thermal
b)
Mechanical energy is transformed into thermal 
c)
Thermal energy is transformed into mechanical
d)
Nuclear energy is transformed into mechanical and thermal
23.
What kind of energy does a geothermal power plant use to generate electricity?
a)
Electrical
b)
Mechanical
c)
Thermal
d)
Potential
24.
What energy type does geothermal, hydroelectric, solar, fossil fuels, nuclear, and wind energy all have in common?
a)
Thermal
b)
Mechanical
c)
Electrical
d)
Radiant
25.
Which of the following is an example of potential energy?
a)
Cheese
b)
Electricity
c)
A spinning fan
d)
A loud noise
26.
Which of the following is an example of kinetic energy?
a)
A burning fire
b)
A boulder at the top of a cliff
c)
A container of gasoline
d)
A battery
27.
If an object has a battery what energy transformation must be part of it's transformation sequence?
a)
Chemical → Thermal
b)
Chemical → Electrical
c)
Chemical → Mechanical
d)
Chemical → Radiant
28.
Which of these is not a correct term for the energy of light)?
a)
Thermal Energy
b)
Radiant Energy
c)
Light Energy
d)
Electromagnetic Energy
29.
what type of energy is stored in a battery?
a)
electrical
b)
chemical
c)
thermal
d)
mechanical
30.
Which energy transformation occurs in a toaster?
a)
chemical to electric
b)
electric to thermal
c)
kinetic to chemical
d)
thermal to potential
31.
A battery converts what type of energy to another?
a)
sound to kinetic
b)
light to heat
c)
mechanical to electrical
d)
chemical to electrical
32.
The roller coaster cart has the most gravitational potential energy at position-
a)
W
b)
X
c)
Y
d)
Z
33.
Which items would have this energy transformation: chemical energy -> mechanical energy?
a)
person running
b)
candle burning
c)
windmill turning
d)
playing a violin
34.
A hairdryer converts -- 
a)
electrical energy into chemical
b)
electrical energy into thermal
c)
chemical energy into mechanical
d)
thermal energy into mechanical
35.
The diagram shows a complete circuit with a battery and a buzzer making noise. This circuit works by transforming -
a)
chemical energy to electrical to sound.
b)
electrical energy to thermal to light.
c)
sound energy to electrical to chemical.
d)
mechanical energy to electrical to sound.
36.
Where is the potential energy the greatest?
a)
A
b)
B
c)
C
d)
D
37.

What is the purpose of a typical generator?

a)

To convert rotational mechanical energy into electricity

b)

To convert single direction mechanical energy into rotational mechanical energy

c)

To convert solar energy into electricity

d)

To convert electricity into rotational mechanical energy

38.

What is the purpose of a turbine?

a)

To convert rotational mechanical energy into electricity

b)

To convert single direction mechanical energy into rotational mechanical energy

c)

To convert solar energy into electricity

d)

To convert electricity into rotational mechanical energy

39.

What is the purpose of a solar panel?

a)

To convert rotational mechanical energy into electricity

b)

To convert single direction mechanical energy into rotational mechanical energy

c)

To convert solar energy into electricity

d)

To convert electricity into rotational mechanical energy

40.

What is the purpose of a motor?

a)

To convert rotational mechanical energy into electricity

b)

To convert single direction mechanical energy into rotational mechanical energy

c)

To convert solar energy into electricity

d)

To convert electricity into rotational mechanical energy

41.

When does a falling object have the most kinetic energy?

a)

The moment just before it hits it's lowest possible position.

b)

After it hits it's lowest possible position.

c)

At it's highest possible position.

d)

Halfway down to it's lowest possible position.

42.

When does a falling object have it's greatest speed?

a)

The moment just before it hits it's lowest possible position.

b)

After it hits it's lowest possible position.

c)

At it's highest possible position.

d)

Halfway down to it's lowest possible position.

43.

When does a falling object have it's greatest potential energy?

a)

The moment just before it hits it's lowest possible position.

b)

After it hits it's lowest possible position.

c)

At it's highest possible position.

d)

Halfway down to it's lowest possible position.

44.

When does a falling object have half kinetic, half potential energy?

a)

The moment just before it hits it's lowest possible position.

b)

After it hits it's lowest possible position.

c)

At it's highest possible position.

d)

Halfway down to it's lowest possible position.

45.

When does a pendulum have it's greatest kinetic energy and speed?

a)

At it's lowest possible point through it's swing.

b)

At it's highest possible point through it's swing.

c)

When it is halfway between it's highest and lowest points.

d)

When it stops moving to switch directions to swing back the other direction.

46.

Where is the kinetic energy the greatest?

a)

A

b)

B

c)

C

d)

D

47.

Where is the roller coasting going to be moving the fastest?

a)

A

b)

B

c)

C

d)

D

48.

Where does the Sun get it's energy from?

a)

Radiant Energy

b)

Thermal Energy

c)

Nuclear Potential Energy

d)

Electromagnetic Energy

49.

Which of the following terms does not belong with the others?

a)

Electromagnetic Energy

b)

Radiant Energy

c)

Light Energy

d)

Electric Energy

50.

As the rider pedals, her leg muscles transform chemical energy into mechanical energy” -Where does the rider get her chemical energy from?

a)

Going up the hill

b)

Pedaling for hours

c)

Stored from food that she ate

51.

Thermal energy is …

a)

(using a blender)

b)

(measure of how fast particles are vibrating)

c)

(alarm clock )

d)

(all of the above)

52.
The diagram below shows a hot air balloon rising. Propane gas tanks are seen at the bottom of the balloon.  What energy transformations occur when propane gas is used to lift the balloon? 
a)
Mechanical to light to chemical
b)
Chemical to mechanical to thermal 
c)
Thermal to chemical to light
d)
Chemical to thermal to mechanical 
53.
Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?
a)
Chemical to light
b)
Electrical to chemical
c)
Electrical to light
d)
Chemical to electrical
54.
The wind turns the blades of a windmill to produce what kind of energy?
a)
Mechanical
b)
Radiant
c)
Electrical
d)
Nuclear

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