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WorksheetsEnergy Unit Review
Total questions: 98
Worksheet time: 16hrs 20mins
The rock in the picture is pushed over the edge and it begins to fall. Which type of energy conversion is taking place?
mechanical to heat
sound to mechanical
potential to kinetic
kinetic to potential
A ball is projected into the air. Where is potential energy the greatest?
Which point on the roller coaster's path represents the maximum potential energy?
As a roller coaster goes downhill
kinetic energy is converted into potential energy.
potential energy is converted into kinetic energy.
electrical energy is converted into potential energy.
potential energy is converted into electrical energy.
When gasoline is burned in a car engine, ________ energy is converted into _________ energy.
heat, chemical
chemical, potential
mechanical, chemical
chemical, mechanical
Within the alarm clock seen here, energy is transformed. It is time to get up! The alarm clock goes off. What are the energy transformations taking place in your alarm clock?
electrical to magnetic to sound
electrical to mechanical to sound
electrical to mechanical to light
chemical to electrical to mechanical
Muscles convert chemical energy into
light energy.
nuclear energy.
mechanical energy.
electromagnetic energy.
What form of energy does a compressed spring have?
heat energy
kinetic energy
chemical energy
potential energy
Maria’s father started a fire in the fireplace. He crumpled some paper, lit a match, and soon the logs in the fireplace were burning. In this case, the stored chemical energy in the logs was changed into
electrical energy.
mechanical motion.
heat and light energy.
electrical and heat energy.
A drawn bow possesses mechanical energy in the form of _______________. After the arrow is released, the energy is transformed into _________________.
potential energy; mechanical energy
elastic potential energy; kinetic energy
gravitational potential energy; kinetic energy
elastic kinetic energy; mechanical kinetic energy
How would you describe the relationship between the mass of a car and its kinetic energy?
As the mass of a car increases, its kinetic energy increases.
As the mass of a car increases, its kinetic energy decreases.
As the mass of a car decreases, its kinetic energy increases.
There is no clear relationship between mass and kinetic energy.
How does the mass of a bowling ball that has been rolled down the lane affect the kinetic energy?
The kinetic energy does not depend on the mass of the bowling ball.
The kinetic energy is increasing proportional to the mass of the bowling ball.
The kinetic energy is decreasing proportional to the mass of the bowling ball.
The kinetic energy is increasing proportional to the square of the mass of the bowling ball.
A pole vaulter runs forward, plants his pole, rises in the air and lands. What point represents his greatest amount of gravitational potential energy?
when he initially lands
as he runs forward to plant the pole
just before he starts to fall to the ground
after take-off as the pole expands and lifts the vaulter toward the bar
In the figure, potential energy is being converted into kinetic energy from
point A to point B
point B to point C
The only energy involved here is kinetic.
Energy is not being converted.
Gravitational potential energy depends on the strength of gravity, ________ and ________ of the object.
height and mass
friction and movement
mass and movement
height and friction
Explain what happens to the potential energy of a rock as it falls off the side of a cliff.
The kinetic energy decreases as the potential energy increases.
The kinetic energy decreases as the potential energy decreases.
The potential energy decreases as the kinetic energy increases.
The potential energy decreases as the kinetic energy decreases.
When you are holding a book, energy is stored between the book and Earth; this type of energy is called ________ potential energy.
Kinetic Energy
Chemical Energy
Gravitational Potential Energy
Electric Energy
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 —
potential
light
thermal
mechanical
List the energy transformations of this object.
Electrical → Mechanical/ Radiant Energy
Electrical → Mechanical / Sound / Thermal Energy
Mechanical → Chemical / Thermal energy
Mechanical→ Electrical energy
What type of energy is stored in batteries or food?
Thermal energy
Chemical energy
Mechanical energy
When a pendulum swings, at which point is kinetic energy highest?
1
2
3
4
When a pendulum swings, at which point is potential energy at its greatest? (assume there is no friction)
1 and 5
2 and 4
3
4 and 5
When does that ball have the greatest potential energy?
A
B
C
D
The law of conservation of energy means ________________________
Energy CAN be created and destroyed or transformed
Energy can be used up or transformed
Energy CANNOT be created or destroyed, only transformed
Energy cannot be transformed
What is kinetic energy?
moving energy
potential energy
stored energy
renewable energy
What is potential energy?
moving energy
stored energy
renewable energy
non renewable energy
Potential or kinetic?
Stretched bow and arrow?
kinetic
potential
Potential or kinetic?
Running?
potential
kinetic
The Law of Conservation of Energy states:
Energy can created or destroyed but not transformed
Energy cannot be created or destroyed, it can only transformed
Energy can't be created, destroyed or transformed
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?
The total amount of energy is conserved
The total amount of energy is less after a reaction
The total amount of energy is more after a reaction
Which energy transformation below matches?
Burning coal or carbon-based fuel at a powerplant?
chemical to heat to electrical
mechanical to chemical to sound
electrical to chemical to heat
When a roller coaster is at the bottom of the hill...
The potential energy is greatest, and kinetic energy is least
The kinetic energy is greatest, and potential energy is least
Kinetic and Potential energy are equal
At which point(s) on the roller coaster is the kinetic energy at its maximum?
A
B
C
D
As energy transformations occur within a system, the total energy of the system ___.
increases
decreases
is transferred out of the system
remains constant
At which point is potential energy greatest?
W
X
Y
Z
What type of energy is in this picture?
Kinetic
Potential
Chemical
Sound
Which specific type of energy is at point A?
Potential Energy
Kinetic Energy
Mechanical Energy
None
Which specific type of energy is at point B?
Potential Energy
Kinetic Energy
Mechanical Energy
None
As an apple falls off a tree...
Gravitational potential energy decreases and kinetic energy increases
Gravitational potential energy decreases and kinetic energy decreases
Gravitational potential energy increases and kinetic energy decreases
Gravitational potential energy increases and kinetic energy increases
What kind of energy does an object possess when it's resting on top of the hill?
Potential Energy
None
Kinetic Energy
All
On a roller coaster, where is maximum kinetic energy?
At the bottom of a big hill
When going around a corner
When going upside down
At the top of a big hill
The amount of kinetic energy of an object has depends on its
mass and volume
volume and friction
mass and speed
speed and density
What is kinetic energy?
When an object is in motion
When an object is not in motion
all of the above
none of the above
Which is the best example that something has kinetic energy?
a car parked on a steep hill
a tennis ball rolling across the court
a picture hanging on the wall
a piece of coal before it's burned
Which is the best example of kinetic energy?
A car sitting on top of a hill
A skateboard on the sidewalk
A wagon rolling down a hill
A powerwheel parked in the yard
When does an object have no kinetic energy?
when it is at rest
when it is moving very slowly
when the only force that is acting on it is gravity
when it has no electrical charge
The faster an object moves, the ________ kinetic energy it has.
more
less
none of the above
all of the above
Which is an example of kinetic energy?
A soccer ball is lying on the ground.
A person is standing in line.
A roller coaster is sitting at the top of a hill.
Water is flowing over a dam.
Which variables affect kinetic energy?
pressure and volume
velocity and mass
weight and height
temperature and weight
The faster an object moves, the ________ kinetic energy it has.
more
less
If a football player wants to become better at tackling by increasing his or her kinetic energy, how can the player do this?
Increase his/her height
Increase his/her speed
Increase his/her mass
Decrease his/her speed
What is an example of kinetic energy?
A bird sitting in a tree
A bouncy ball on the table
A car driving on the highway
A book on shelf
Potential energy depends on
mass and height
height and speed
mass and speed
height and force
___________________ is the type of energy that is stored in an object; energy that an object has because of its position relative to other objects. (Example: pulled back rubber band)
Kinetic Energy
Potential Energy
Solar Energy
Mechanical Energy
Which has more potential energy?
A bird in a tree
A car in the garage
An airplane before takeoff
A child on a swing
I have the most potential energy if I am:
5 feet high
10 feet high
15 feet high
20 feet high
Which is an example of potential energy?
A child is hopping down the sidewalk.
A horse is galloping in a field.
A person is sitting on a horse.
A car is driving on the street.
The total amount of energy
varies
can cancel out to zero
goes out into space
remains constant
Complete the statement about the principal of Conservation of Energy.
Energy can be changed for one form to another but the total amount of energy
always increases
always decreases
does not change
varies according to the reaction
Energy that is stored in a system, ready to be used, is called ____________ energy.
Kinetic
Potential
Conserved
Power
match
Highest potential energy
Lowest potential energy
Which has the greatest potential energy?
a ball on the top of a building has this type of ENERGY
Electrical
Sound
Thermal
Gravitational Potential Energy
Why did the potential energy of the box increase?
The box was moved to a higher position.
The box produced potential energy.
The box lost mass.
Which position would have the most Potential energy?
1
2
3
4
5
In this picture, what type of energy is displayed?
Thermal Energy
Potential Energy
Electrical Energy
Conduction
Which image shows the most potential energy?
A
B
C
D
When a bow is stretched, it has ____ energy.
Magnetic Energy
Kinetic Energy
Static Energy
Potential Energy
Which soccer ball has the greatest amount of potential energy?
Ball A
Ball B
Ball C
Ball D
The Law of Conservation of (a) states that energy (b) be created or (c)
Label the energy transformation that occurs when a match is struck.
Kinetic Energy
Chemical Energy
Light Energy
Heat Energy
Match the following
Potential Energy
A roller coaster car at the top of a hil
Kinetic Energy
Roller coaster car speeding down a hill
Law of Conservation of Energy
Energy cannot be created nor destroyed
Mechanical Energy
Hammer strikes nail and driven into wood
The ability to do work
Physics defines energy
Julia wakes up early on Saturday morning to make waffles and watch cartoons. What type of energy transformation is occurring while she is cooking breakfast?
(a) --> (b)
What type of energy transformation is taking place in a flashlight.
(a) to electrical to (b)
Energy can change forms but cannot be created or destroyed. WHAT IS THE ENERGY TRANSFORMATION SHOWN IN THE PICTURE?
ELECTRICAL TO RADIANT
MECHANICAL TO ELECTRICAL
MECHANICAL TO THERMAL
ELECTRICAL TO THERMAL
Match these conversions
kinetic to electrical
chemcial to radiant/thermal
electrical to thermal
chemical to thermal/kinetic
chemical to electromagnetic
At what position would a cyclist have the most kinetic energy?
A
B
D
F
When a roller coaster is at the bottom of a hill it has
high potential energy
high kinetic energy
low kinetic energy
equal amounts of kinetic and potential energy
As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy?
The PE and KE increase and decrease together
The PE decreases while the KE increases
Impossible to know without knowing the mass
As the ball is dropped, the potential energy decreases while the kinetic energy increases however the amount of energy stays the same.
True
False
What is potential energy?
The energy an object possesses due to its motion
The energy stored by an object ready to be used, directly related to the height and mass in a rollercoaster
The energy an object has due to its position above the ground
The energy stored by an object ready to be used, directly related to its speed and mass
The higher a roller coaster is
the more potential energy it has
the less potential energy it has
the heavier it is
the more gravity it has
A rollercoaster will always have the same total energy throughout the ride if no energy is lost.
True
False
How does the height of a rollercoaster affect its potential energy?
The potential energy of a rollercoaster decreases with its height.
The potential energy of a rollercoaster is not affected by its height.
The potential energy of a rollercoaster is inversely proportional to its height.
The potential energy of a rollercoaster increases with its height.
What is the difference between kinetic energy and potential energy in a rollercoaster?
Kinetic energy is the energy of motion, while potential energy is the energy of position or stored energy.
Kinetic energy is only present in rollercoasters, while potential energy is present in all objects.
Kinetic energy and potential energy are the same thing.
Kinetic energy is the energy of position, while potential energy is the energy of motion.
When is the speed of a roller coaster the fastest?
At the top of the initial hill
As it moves towards the bottom of the hill
At the end of the ride
