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WorksheetsEnergy Unit Review
Total questions: 35
Worksheet time: 38mins
Name
Class
Date
1.
Kinetic energy is the energy of motion. A moving object with more mass and with a higher velocity has __________ objects with less mass and a lower velocity.
a)
the same amount of kinetic energy as
b)
less kinetic energy than
c)
more kinetic energy than
d)
no kinetic energy compared to
2.
Potential energy is stored energy. An object with more mass and a higher position will have ______________ an object with less mass and a lower position.
a)
less potential energy than
b)
more potential energy than
c)
the same amount of potential energy as
d)
no potential energy compared to
3.
Which graph correctly shows the relationship between potential energy and height?
PE=mh
PE=mh
a)
1
b)
2
c)
3
d)
4
4.
Which statement correctly analyzes the data in the graph?
PE=mh
PE=mh
a)
As the mass of a marble increases, its potential energy decreases.
b)
Mass and potential energy are not related.
c)
As the mass of a marble increases, its potential energy increases.
5.
Which graph correctly shows the relationship between kinetic energy and velocity (speed)?
KE=0.5mv2
KE=0.5mv2
a)
1
b)
2
c)
3
d)
4
6.
Which statement correctly analyzes the data in the graph?
KE=0.5mv2
KE=0.5mv2
a)
Kinetic energy decreases as velocity increases.
b)
Kinetic energy increases at a faster rate as its velocity increases.
c)
Kinetic energy and velocity are not related.
d)
Kinetic energy increases at a slower rate as its velocity increases.
7.
Which statement correctly analyzes the data in the graph?
KE=0.5mv2
KE=0.5mv2
a)
The more mass an object (body) has, the more kinetic energy it has while in motion.
b)
The more mass an object (body) has, the less kinetic energy it has while in motion.
c)
Mass and kinetic energy are not related.
8.
At which point does the roller coaster have the most potential energy?
a)
1
b)
2
c)
3
d)
4
9.
At which point does the roller coaster have the most kinetic energy?
a)
1
b)
2
c)
3
d)
4
10.
The skater is at the point in which he has mostly potential energy because
a)
there is no relationship between potential energy and height.
b)
he is near the bottom of the track.
c)
he is moving the fastest.
d)
he is near the top of the track.
11.
The skater is at the point in which he as mostly kinetic energy because
a)
he is near the top of the track.
b)
he is moving the fastest.
c)
he can't move past this point.
d)
there is no relationship between kinetic energy and position.
12.
At which TWO (2) points does the pendulum have the most potential energy?
a)
X
b)
Y
c)
Z
d)
0
13.
At which point does the pendulum have the most kinetic energy?
a)
X
b)
Y
c)
Z
d)
0
14.
The Law of Conservation of Energy states that energy is
a)
destroyed but never created.
b)
created but never destroyed.
c)
never converted from one form to another.
d)
never created nor destroyed; it can only be converted from one form to another.
15.
What type of energy transformation is occurring in the picture?
a)
electric to mechanical
b)
chemical to mechanical
c)
thermal to chemical
d)
mechanical to chemical
16.
What type of energy transformation is occurring?
a)
chemical to radiant
b)
chemical to mechanical
c)
radiant to chemical
d)
thermal to mechanical
17.
An alarm clock starts beeping and playing music at 7:15. What type of energy transformation is occurring?
a)
electrical to thermal
b)
radiant to sound
c)
sound to electrical
d)
electrical to sound
18.
The sun heats a metal roof. What type of energy transformation is occurring?
a)
radiant to thermal
b)
thermal to radiant
c)
radiant to chemical
d)
chemical to radiant
19.
You eat a healthy meal and then exercise. What energy transformation is occurring?
a)
mechanical to chemical
b)
chemical to mechanical
c)
thermal to chemical
d)
electrical to mechanical
20.
Which energy transformation is occurring when a cell phone battery is being charged?
a)
electrical to chemical
b)
chemical to electrical
c)
electrical to mechanical
d)
mechanical to chemical
21.
The following observations were made:
*A fan is plugged in to an electrical outlet.
*The blades spin when the fan is turned on.
*The blades stop spinning when the fan is turned off.
Which energy transformation do these observations give proof for?
*A fan is plugged in to an electrical outlet.
*The blades spin when the fan is turned on.
*The blades stop spinning when the fan is turned off.
Which energy transformation do these observations give proof for?
a)
electrical to mechanical
b)
electrical to light
c)
mechanical to electrical
d)
light to electrical
22.
A hair dryer converts electrical energy to which 3 types of energy?
a)
radiant (light), mechanical (spinning fans), chemical
b)
sound, thermal (heat), radiant (light)
c)
thermal (heat), sound, & mechanical (spinning fans)
d)
chemical, sound, mechanical (spinning fans)
23.
Grapes grow through the process of photosynthesis. Robert eats grapes (which are chemically broken down by his body) for extra energy for his workout (movement). What energy transformations have occurred?
a)
thermal to chemical to electrical
b)
radiant to chemical to mechanical
c)
mechanical to chemical to radiant
d)
chemical to mechanical to thermal
24.
Study the diagram. Which is a correct explanation for the conversions?
a)
The water behind the dam has the energy of motion. When released, the energy is stored. Electrical energy is then converted to mechanical energy as the turbines spin.
b)
The water behind the dam has stored energy. When released, this potential energy is converted to kinetic energy. The movement of the water spins the turbines, creating the movement of electrons.
c)
First, the turbines spin, creating the movement of electrons. Then the water moves from the turbines to behind the dam, where it becomes stored energy.
25.
When a room is heated by a space heater through the rising of warm air and sinking of cold air, heat is being transferred through
a)
convection
b)
conduction
c)
radiation
26.
As atoms and molecules gain heat, they
a)
move slower
b)
move faster
c)
move at the same rate
d)
stop moving
27.
When heat is transferred by currents of rising warm and sinking cold particles (atoms and molecules), it is called
a)
convection
b)
conduction
c)
radiation
28.
When heat is transferred by waves moving through empty space, it is called
a)
convection
b)
conduction
c)
radiation
29.
When heat is transferred through direct contact (collision of atoms), this is called
a)
convection
b)
conduction
c)
radiation
30.
When a liquid is boiled, heat is transferred from the stove to the pot through
a)
conduction (direct contact)
b)
convection (rising of warm and sinking of cold)
c)
radiation (through space)
31.
When a liquid is boiled, heat is transferred within the liquid through
a)
convection (rising of warm and sinking of cold)
b)
conduction (direct contact)
c)
radiation (through space)
32.
Heat from the sun is transferred to the earth through
a)
conduction
b)
convection
c)
radiation
33.
When you touch a space heater and it feels hot, heat is transferred through
a)
convection
b)
conduction
c)
radiation
34.
When you feel the heat from a space heater from several feet away, heat is being transferred through
a)
convection
b)
conduction
c)
radiation
35.
Which correctly explains the energy transformation?
a)
Stretching a rubber band stores gravitational kinetic energy. When it is released, the kinetic energy is converted to potential energy.
b)
Stretching a rubber band stores elastic potential energy. When it is released, the stored-up potential energy is converted to kinetic energy as it shoots out.
c)
Stretching a rubber band and releasing it is not an example of energy transformation.
d)
Stretching the rubber band releases stored energy. When it is released, it is transformed into both kinetic and potential energy.
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