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Worksheets11/22- Energy Review
Total questions: 46
Worksheet time: 43mins
Name
Class
Date
1.
The PE of a magnet in the presence of another magnet is related to-
a)
Only how close the magnets are together
b)
Only the direction in which the poles point
c)
How close the magnets are together and how fast they are moving
d)
How close the magnets are together and which direction the poles point
2.
Choose the position of the skater that best matches the provided description
- All of the energy is potential, none is kinetic
a)
Option 1
b)
Option 2
c)
Option 3
3.
Choose the position of the skater that best matches the provided description
-Half of the energy is potential, half is kinetic
a)
Option 1
b)
Option 2
c)
Option 3
4.
Choose the position of the skater that best matches the provided description
-The skater has come to a complete stop, all energy has been converted to thermal energy
a)
Option 1
b)
Option 2
c)
Option 3
5.
If the thermal energy of a substance increases, its temperature will _________________
a)
Increase
b)
Decrease
c)
Stay the same
6.
The picture shows the swinging of a pendulum.
What is the PE of the pendulum at the "end" of its swing (the image to the right)
-Energy is conserved
a)
10 J
b)
0 J
c)
5 J
d)
7 J
e)
1 J
7.
A toy car is moving along with 0.4 joules of energy. If it's speed is doubled, then it's new kinetic energy is
a)
0.1 J
b)
0.2 J
c)
0.8 J
d)
1.6 J
e)
still 0.4 J
8.
A glider is flying through the air, it has 0.8 joules of potential energy.
If the speed is doubled, and the height is doubled- the new potential energy is...
a)
1.6 joules
b)
0.2 joules
c)
0.4 joules
d)
3.2 joules
e)
0 joules
9.
Which would ALWAYS be true of an object possessing a kinetic energy of 0 joules
a)
It is on the ground
b)
It is moving
c)
It is above the ground
d)
It is accelerating
e)
It is not moving
10.
The total mechanical energy of an object is the _________
a)
Kinetic energy minus the potential energy of the object
b)
The initial kinetic energy plus the initial energy of the object
c)
Kinetic energy plus the potential energy of the object at any instant during it's motion
d)
Final amount of kinetic energy and potential energy minus the initial amount of kinetic and potential energy
11.
If an object moves in such a manner as to conserve its total mechanical energy, then...
a)
the amount of kinetic energy remains the same throughout its motion
b)
the amount of potential energy remains the same throughout its motion
c)
the amount of both the kinetic and potential energy remains the same throughout its motion
d)
the sum of the kinetic and potential energy remains the same throughout its motion
12.
Which would always be true of an possessing a potential energy of 0 joules
a)
It is on the ground
b)
It is moving
c)
It is above the ground
d)
It is at rest
13.
Calculate the kinetic energy of 5.2 kg object moving at 2.4 m/s
a)
14.97 J
b)
5.2 J
c)
2.4 J
d)
10 J
e)
16.3 J
14.
Ball A and ball B have the same mass
If ball B is traveling at double the velocity of A, then ball B has the __________ of ball A
a)
same KE
b)
half the KE
c)
four times the KE
d)
1/8 the KE
15.
An 8 kg dog is running at a speed of 10/s.
What is the kinetic energy of the dog?
a)
400 joules
b)
80 joules
c)
8 joules
d)
10 joules
e)
64 joules
16.
Two trucks have the same velocity but different masses.
Truck #1 has a mass of 200kg and Truck #2 has a mass of 500 kg.
Which Truck will have the greatest kinetic energy?
a)
Truck 1
b)
Truck 2
c)
They have the same kinetic energy
d)
No way of determining the answer from this information
17.
What is energy?
a)
The ability to cause motion or to allow something to move
b)
A push or pull on an object
c)
A measurement of mass or weight
d)
The product of mass and velocity
18.
Mechanical Energy is....
a)
The sum of the potential and kinetic energy of an item
b)
All of the thermal energy contained in an item
c)
An accounting for of all the energy that an item has/ will lose
d)
The difference between kinetic and potential energy
19.
Based on the law of conservation of energy, what happens to the mechanical energy of the skydiver as she falls towards the ground
a)
It remains constant
b)
It increases
c)
It decreases
20.
Gravitational potential energy is related to-
a)
what an object is made of
b)
an objects motion
c)
an objects position
d)
an objects color
21.
Which statement about potential energy is correct
a)
The closer an object is to the ground, the greater the PE
b)
The farther an object is from the ground, the greater the PE
c)
The only form of PE is gravitational PE
d)
Potential energy is the energy of motion
22.
In the image shown- what is the form of energy that is generated as "waste" as the girl pedals her bike?
a)
thermal
b)
chemical
c)
potential
d)
mechanical
23.
Identify the correct energy pathway used to heat the water
a)
Chemical-> Mechanical->Electrical-> Thermal
b)
Thermal->Radiant->Electrical-> Mechanical
c)
Mechanical-> Electrical-> Thermal
d)
Thermal-> Electrical-> Mechanical-> Chemical
24.
In the image, the generator converts _______________ energy to ________________ energy
a)
Mechanical, Electrical
b)
Light, Electrical
c)
Thermal, Electrical
d)
Nuclear, Thermal
e)
None of the above
25.
The pendulum shown starts at rest and is allowed to swing. Where will the GPE of the pendulum be the greatest?
a)
1
b)
2
c)
3
d)
4
e)
GPE does not change as the pendulum swings
26.
A roller coaster car starts from rest at point A and proceeds down the track, at what point on the track does the car have the greatest potential energy
a)
A
b)
B
c)
C
d)
D
e)
E
27.
A roller coaster car starts from rest at point A and proceeds down the track, at what point on the track does the car have the greatest kinetic energy
a)
B
b)
A
c)
C
d)
D
e)
E
28.
Which of the following is not a type of potential energy?
a)
kinetic
b)
chemical
c)
gravitational
29.
A device that converts Electrical Energy to Radiant energy.
a)
lightbulb
b)
toaster
c)
car
d)
microwave
30.
A 0.1 kg ball is held 1 meter from ground, how much GPE does it have?
a)
10 joules
b)
0.1 joules
c)
0.98 joules
d)
100 joules
31.
A toy car and a real car are moving down the road with the same kinetic energy- which one is traveling faster
a)
toy car
b)
real car
c)
speed of the cars are equal, on account of their kinetic energies being equal
32.
The conversion of kinetic energy to thermal energy at the macroscopic level can best be explained at the microscopic level in which of the following descriptions?
a)
Reducing the mass of an object through friction while maintaining the same energy
b)
Converting the potential energy of a system by breaking chemical bonds
c)
Adding to the average motion of the particles within the material that gains thermal energy
d)
Combining the energy of one system with the energy of another, creating new energy
33.
Hydroelectric dams take running water and use it to turn a turbine.
The most correct explanation of this process is that–
a)
kinetic energy is converted into heat energy, and the heat energy is used to create electricity.
b)
using heat, water energy is converted to steam, which is then used to create electricity.
c)
water energy is converted into kinetic energy.
d)
kinetic energy is converted into electrical energy.
34.
During a pendulum's swing, the highest point is considered to have ____________ and ___________
a)
High Potential Energy, Low Kinetic Energy
b)
Low Potential Energy, High Kinetic Energy
c)
High Potential Energy, High Kinetic Energy
d)
Low Potential Energy, Low Kinetic Energy
35.
A toy car resting at the top of a ramp will be storing _____________ energy
a)
sound
b)
nuclear
c)
kinetic
d)
potential
36.
A 3.00 kg toy falls from a height of 10.0 m.
Just before hitting the ground, what will its kinetic energy be?
a)
98.0 J
b)
0.98 J
c)
29.4 J
d)
294 J
37.
The skateboarder shown above has a potential energy of 2,800 J and kinetic energy of 0J at a height of 4 meters. How much total mechanical energy will she have after 2 seconds? Neglect friction and air resistance.
a)
2000J
b)
1600J
c)
1400J
d)
2800J
38.
Underwater geysers have temperatures that are over 100 degrees Celsius when they erupt. What type of energy causes this?
a)
light
b)
sound
c)
electrical
d)
thermal
39.
Which is an example of thermal energy?
a)
b)
c)
d)
40.
Imagine you're a tiny particle inside an object, bouncing around with all your particle friends. What type of energy are you all creating?
a)
Thermal Energy
b)
Potential Energy
c)
Chemical Energy
d)
Nuclear Energy
41.
A ball is dropped from a height of 20 meters. What type of energy conversion occurs as it falls?
a)
Potential to Kinetic
b)
Chemical to Electrical
c)
Kinetic to Potential
d)
Thermal to Mechanical
42.
Which of the following scenarios involves the conversion of chemical energy to mechanical energy?
a)
A battery charging
b)
A fan spinning
c)
A car engine running
d)
A light bulb glowing
43.
A pendulum swings back and forth. At which point is its kinetic energy the highest?
a)
Halfway up the swing
b)
Kinetic energy is constant
c)
At the highest point of the swing
d)
At the lowest point of the swing
44.
A pendulum is released from a height of 2 meters. At what point in its swing is its potential energy the lowest?
a)
At the highest point
b)
At the lowest point
c)
Halfway up the swing
d)
Potential energy is constant
45.
Which of the following best describes kinetic energy?
a)
Energy stored in chemical bonds
b)
Energy transferred through electromagnetic waves
c)
Energy an object possesses due to its motion
d)
Energy stored in an object due to its position
46.
A ball is thrown upwards with an initial velocity. At the highest point of its trajectory, what can be said about its kinetic and potential energy?
a)
Kinetic energy is maximum, potential energy is zero
b)
Kinetic energy is zero, potential energy is maximum
c)
Both kinetic and potential energy are zero
d)
Both kinetic and potential energy are maximum
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