Transcript Answer - Cobb Learning

Energy
Forms of
Energy
Forms of
Energy
Continued
Conservation
of Energy
KE & PE
Energy
Transformation
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Perla turns on a lamp so she can read.
What type of energy provided by the
lamp helps Perla read?
A.
B.
C.
D.
Nuclear energy
Electromagnetic energy
Chemical energy
Thermal energy
Answer
100 points
B. Electromagnetic Energy
Home
What kind of energy is produced by the
vibrating particles when the strings of an
acoustic guitar are plucked?
A.
B.
C.
D.
Chemical energy
Nuclear energy
Electrical energy
Sound energy
Answer
200 points
D. Sound Energy
Home
What kind of energy is involved in the
movement of the blades of a windmill when
moving air or wind strikes it?
A.
B.
C.
D.
Mechanical energy
Nuclear energy
Electrical energy
Electromagnetic energy
Answer
300 points
A. Mechanical Energy
Home
This skateboarder will have
the most potential energy at point ___.
Answer
400 points
G. PE increases with height
Home
This is the total amount of energy in all of
the particles contained in a sample of
matter. Heat is often associated with this
type of energy.
A.
B.
C.
D.
Mechanical Energy
Thermal Energy
Sound Energy
Electrical Energy
Answer
500 points
B. Thermal energy
Home
This is the type of energy that is stored in
chemical bonds. For example, batteries
have this type of energy.
A.
B.
C.
D.
Nuclear energy
Sound energy
Electromagnetic energy
Chemical energy
Answer
100 points
D. Chemical Energy
Home
Computers, radios, televisions, and lamps
are all examples of devices that operate
using this type of energy.
A.
B.
C.
D.
Electrical energy
Nuclear energy
Thermal energy
Mechanical energy
Answer
200 points
A. Electrical energy
Home
This type of energy results from the motion
of particles within atoms. Light, x-rays, and
microwaves are all examples of this type of
energy.
A.
B.
C.
D.
Nuclear energy
Sound energy
Electromagnetic energy
Electrical energy
Answer
300 points
C. Electromagnetic energy
Home
This energy is given off by a
vibrating object and travels in
the form of waves.
A.
B.
C.
D.
Nuclear energy
Sound energy
Electromagnetic energy
Chemical energy
Answer
400 points
B. Sound energy
Home
This is the energy stored in the
nucleus of an atom as a result of
the nuclear forces.
A.
B.
C.
D.
Mechanical energy
Thermal energy
Chemical energy
Nuclear energy
Answer
500 points
D. Nuclear energy
Home
Which of the following correctly states the
law of conservation of energy?
A. Energy cannot be created or destroyed but can
be converted from one form to another
B. Energy can be created or destroyed, as well as
being converted from one form to another
C. Energy is created when it is converted from
one form to another
D. In most systems, some energy is destroyed
and lost as heat
Answer
100 points
A. Energy cannot be created or
destroyed but can be converted
from one form to another
Home
At what point in the picture is the kinetic
energy the greatest and potential energy
lowest?
1
2
A.
B.
C.
D.
1
2
3
4
3
4
Answer
200 points
D. 4
Home
Using the formula
Potential Energy = mass x height
what is the potential energy of a rock with a
mass of 50 kg that rests at the edge of a cliff
125 meters high?
A. 2.5J
B. 50J
C. 125J
D. 6,250J
Answer
300 points
D. 6250 J
Home
If energy is never lost, then what
causes a rolling ball to eventually stop?
A.
B.
C.
D.
Momentum
Potential energy
Chemical energy
Friction
Answer
400 points
D. Friction
Home
When energy is transformed from
one form to another, some energy
is often wasted in the form of
A.
B.
C.
D.
Heat
Water
Ice
Atoms
Answer
500 points
A. Heat
Home
Kinetic and potential energy both relate
to:
A.
B.
C.
D.
heat
light
motion
temperature
Answer
100 points
C. motion
Home
Can you create or destroy energy?
A. yes
B. no
C. only if you are really strong
Answer
200 points
B. NO way
Home
A swing has potential energy if –
F.
G.
H.
J.
it is swinging up.
it is swinging backwards.
it is sitting still.
it is in motion
Answer
300 points
H. If it is sitting still
Home
When is kinetic energy transferred from one
object to another?
A. when those objects pass one another
B. when those objects are in two places
C. when those objects collide
Answer
400 points
C. During a collision
Home
What does kinetic energy depend on?
A.
B.
C.
D.
the weight and volume of an object
the buoyancy of an object
the mass and speed of an object
Currents
Answer
500 points
C. mass and speed of an object
Home
A stunt driver at the top of a ramp?
Answer
100 points
A. Potential energy
Home
Which list names ONLY items that
represent chemical energy?
a.
b.
c.
d.
apple, sunlight, wood
batteries, banana, gasoline
bicycle, coal, seesaw
electricity, batteries, sound
Answer
200 points
b. batteries, banana,
gasoline
Home
Which list below names only examples of
mechanical energy?
A.
B.
C.
D.
bicycle, stroller, door
lightning bolt, wires, static
food, batteries, gasoline
stars, sun, nucleus of an atom
Answer
300 points
A. bicycle, stroller, door
Home
These pictures show which energy
transformation?
A. electrical to potential
B. chemical to thermal
C. potential to kinetic
D. thermal to nuclear
Answer
400 points
C. Potential to kinetic
Home
Solar energy passes through the solarpanel on this
calculator to make it work.
Which energy conversion is taking
place?
A. nuclear to thermal
B. electromagnetic to electrical
C. electrical to chemical
D. mechanical to electromagnetic
Answer
500 points
B. electromagnetic to
electrical
Home
Bonus round
Which energy conversion is taking place
when you build a campfire?
J. nuclear to chemical & electrical
G. chemical to electromagnetic & thermal
F. electrical to thermal & mechanical
H. mechanical to electrical & chemical
G. chemical to electromagnetic & thermal