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WorksheetsEnergy Work and Power Review
Total questions: 46
Worksheet time: 46mins
Name
Class
Date
1.
According to the Law of Conservation of Energy, energy cannot be _________ or ____________.
a)
destroyed, destroyed
b)
created, saved
c)
created, destroyed
d)
lost, found
2.
Energy transformations occur when...
a)
energy is created through conduction
b)
energy changes from one form to another
c)
two forces slide together that are touching
d)
a chemical reaction takes place
3.
When a soccer ball is on a field, the energy it has just before being kicked is called
a)
kinetic energy
b)
potential energy
c)
mechanical energy
d)
chemical energy
4.
What is energy changing from one form to another?
a)
energy conservation
b)
energy transformation
c)
energy creation
d)
mechanical energy
5.
Mechanical energy
a)
energy built up before being in motion
b)
energy released in a chemical reaction
c)
energy of motion
d)
sum of kinetic and potential energy
6.
Gravitational potential energy depends on the ________ and ________ of the object.
a)
Height and mass
b)
Friction and movement
c)
Mass and Movement
d)
Height and Friction
7.
The roller coaster cart has the most gravitational potential energy at position-
a)
W
b)
X
c)
Y
d)
Z
8.
On a roller coaster, where is maximum kinetic 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
9.
Which energy conversion is taking place when you put gasoline in a car?
a)
thermal -> electrical
b)
mechanical -> electrical
c)
chemical -> mechanical
d)
mechanical -> electromagnetic
10.
what type of energy is stored in a battery?
a)
electrical
b)
chemical
c)
thermal
d)
mechanical
11.
When you eat pizza, Chemical Energy is transferred to _____ Energy.
a)
Solar
b)
Electrical
c)
Mechanical
d)
Chemical
12.
Electrical Energy is transferred to _____ Energy.
a)
Thermal
b)
Solar
c)
Electrical
d)
None
13.
The picture shows a microwave oven. As a microwave oven is operated, electrical energy is transformed into all of the following types of energy EXCEPT —
a)
solar
b)
light
c)
thermal
d)
mechanical
14.
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
15.
The purpose of the panels is to change solar energy into ____________.
a)
light energy
b)
electrical energy
c)
chemical energy
d)
mechanical energy
16.
Which energy transformation occurs in a toaster?
a)
chemical to electric
b)
electric to thermal
c)
kinetic to chemical
d)
thermal to potential
17.
Which items would have this energy transformation: chemical energy -> electrical, light and thermal energy?
a)
turning on a flashlight
b)
nuclear power plant
c)
digesting an apple
d)
tanning bed
18.
Which items would have this energy transformation: chemical energy -> mechanical energy?
a)
person running
b)
candle burning
c)
windmill turning
d)
playing a violin
19.
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
20.
A hairdryer converts --
a)
electrical energy into chemical
b)
electrical energy into thermal
c)
chemical energy into mechanical
d)
thermal energy into mechanical
21.
____________ is the ability to cause change.
a)
Energy
b)
Force
c)
Friction
d)
Motion
22.
Energy due to motion is ____________ energy.
a)
Potential
b)
Energy
c)
Kinetic
d)
Friction
23.
The faster an object moves, the ________ kinetic energy it has.
a)
more
b)
less
c)
none of the above
d)
all of the above
24.
__________ is stored energy.
a)
Potential
b)
Kinetic
c)
None of the above
d)
All of the above
25.
When you are holding a book, energy is stored between the book and Earth; this type of energy is called ________ potential energy.
a)
Kinetic
b)
Potential
c)
Gravity
d)
Friction
26.
When you stretch a rubber band, you are storing __________ energy.
a)
kinetic
b)
potential
c)
none of the above
d)
all of the above
27.
Food has _________ energy.
a)
Potential
b)
Kinetic
c)
None of the above
d)
All of the above
28.
Which point has the most gravitational potential energy
a)
G
b)
f
c)
b
d)
a
29.
Can energy be destroyed?
a)
no
b)
yes
30.
What kind of energy does this device use?
a)
Chemical
b)
Electrical
c)
Thermal
d)
Chemical
31.
What kind of energy is represented in this picture?
a)
Thermal
b)
Potential
c)
Nuclear
d)
Mechanical
32.
Energy that is stored in bonds between atoms is:
a)
Mechanical energy
b)
Chemical energy
c)
Kinetic energy
d)
Nuclear energy
33.
If 150 Joules of work is needed to move a box 10 meters, what force was used?
a)
1500 N
b)
15 N
c)
1.5 N
d)
150 N
34.
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
35.
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
36.
What law says that matter and energy can't be created or destroyed?
a)
First Law of Motion
b)
The Law of Tacos
c)
Laws of Energy Usage
d)
First Law of Thermodynamics
37.
The unit used to measure work is the
a)
Watt
b)
Newton
c)
Joule
d)
meter
38.
The unit used to measure power is the
a)
Watt
b)
Newton
c)
Joule
d)
Newton*meter
39.
A 5000N block is lifted 10 m. How much work was done?
a)
50000 J
b)
5000 J
c)
500 J
d)
50 J
40.
Work done = Force x _________
a)
a. distance
b)
b. acceleration
c)
c. velocity
d)
d. speed
41.
A person weighing 600 N gets on an elevator. The elevator lifts the person 6 m in 10 seconds. How much power was used?
a)
360 W
b)
60 W
c)
3600 W
d)
600 W
42.
How much time is needed to produce 720 Joules of work if 90 watts of power is used?
a)
0.125 s
b)
8 s
c)
64800 s
d)
80 s
43.
The product of mass and velocity is
a)
impulse
b)
acceleration
c)
work
d)
momentum
44.
Why does a driver experience a lot of force when slamming on the brakes?
a)
Decreased time means increased energy.
b)
Decreased time means increased force.
c)
Decreased time means increased momentum change.
d)
All of the above
45.
Which statement is true?
a)
Mass and weight are the same thing.
b)
Weight is a force.
c)
Mass changes with location.
d)
Work is done any time force is applied.
46.
The type of energy that holds a nucleus together is
a)
chemical potential
b)
nuclear potential
c)
gravitational potential
d)
thermal
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