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WorksheetsWork, Power, and Energy
Total questions: 47
Worksheet time: 2hrs 21mins
The kinetic energy of an object increases as its __________ increases.
gravitation energy
potential energy
velocity
specific heat
The SI unit for energy is the _____________.
calorie
meter per second
kilogram
joule
You can calculate gravitational potential energy by using the equation ____________________.
GPE(J) = 1/2 mass x 1/2 height
GPE(J) = weight x height or mass x gravity x height
GPE = mv2/2
GPE= 1/2 mass x velocity
According to the law of conservation of energy, the total amount of energy in the universe ____.
remains constant
changes constantly
increases
decreases
The unit of power is the ____.
joule
watt
m/s
m/s
Which gives the correct relationship for kinetic energy?
KE = mv
KE = mv 2
KE = 1/2 mv
KE = mv 2 /2
What is the proper unit for gravitational potential energy?
gravitons
joules
newtons
meters
At what point on a roller coaster is the gravitational potential energy (GPE) the lowest?
at the top of the highest drop
at the lowest point of the roller coaster
while on the decline
while on the incline
Type of energy that is associated with motion, that is the sum of the kinetic and potential energy of the objects in a system
chemical
radiant
thermal
mechanical
Energy caused by moving electrical charges.
radiant energy
nuclear energy
electrical energy
thermal energy
Energy from the internal motion of particles of matter.
mechanical energy
chemical energy
radiant energy
thermal energy
What is the ability to cause change?
energy
efficiency
work
power
What is the imaginary boundary called when used to describe energy transformations in objects?
thermal energy
system
horsepower
applied force
The potential energy stored in chemical bonds.
thermal energy
chemical potential energy
radiant energy
mechanical energy
What are two ways we harvest or obtain nuclear energy? Choose all that apply.
fusion
fishing
fuschia
fission
What are the energy transformations that occur when you light a candle?
Solar Energy to Wind Energy
Chemical potential energy to Thermal Energy and Radiant Energy
Nuclear Energy to Chemical Energy
Chemical Energy to Mechanical Energy
Which of the following is an example of potential energy changing into kinetic energy?
Cold air freezing water.
Solar energy converting into chemical energy.
A ball falling out of a tree.
Mechanical energy converting into thermal energy.
Energy in the form of motion.
mechanical energy
potential energy
kinetic energy
momentum
Stored energy in the form of position or condition.
potential energy
kinetic energy
momentum
mechanical energy
What is needed to calculate work?
force
distance
time
mass
A student needs 10 Newtons of force to lift a box to the top of a 2 meter shelf. How much work do they do?
12 J
8 J
20 J
5 J
A soccer player kicks a ball with 20 Newtons of force causing it to travel 100 meters. How much work is done on the ball?
200 J
80 J
5 J
2000 J
A worker climbs a ladder and does 8 J of work on a 2 N object. What is the distance they lift the object?
18 m
4 m
10 m
6 m
Where is the kinetic energy of pendulum at its highest?
at the top of the swing
at the bottom of the swing
at 1/4 of the swing
at 3/4 of the swing
What is needed calculate power?
work
time
mass
distance
Suppose a cart has a kinetic energy of 0.5 J. If you add enough mass to double the mass and make the cart go three times as fast, its kinetic energy is now ---.
6 J
3 J
18 J
9 J
Potential energy is associated with ---.
speed
position
direction
temperature
Kinetic energy is associated with ---.
speed
position
direction
temperature
If there is no friction on this track, at which point would the coaster have the most kinetic energy?
A
B
C
D
Where is the roller coaster gaining potential energy?
A to B
B to C
C to D
The roller coaster is always losing potential energy
Energy from a compressed spring would be an example of...
kinetic
elastic
gravitational
chemical
When you release a stretched rubber band, the rubber band has ________ energy.
kinetic
potential
none of the above
all of the above
The product of the net force on an object and the distance through which the object is moved
joule
power
work
energy
The unit for work (aka Newton-meter)
Watt
Power
Work
Joule
________________ is the rate at which work is done.
Power
Work
Time
Energy
The unit of power (aka Joule per second)
Joule
Minute
Watt
Pound
Energy that is stored and held in readiness
Kinetic
Mechanical
Work
Potential
Kinetic energy is the energy of ___________.
Distance
Motion
Work
Roman
Energy can be transformed from one form into another, but the total amount of energy never changes.
Work-energy theorem
Law of conservation of energy
Newton's second law of motion
King's theorem of energy
