Energy Study Slides
Tips about content NOT in
this GAME
• KNOW ALL DEFINITIONS AND
EXAMPLES OF EACH OF THE 6
TYPES OF ENERGY
• USE your study guide!
• BE ABLE TO ANALYZE DATA and
A GRAPH in order to write a
conclusion. *includes variables
(review)
• Honors—You’ll need to be able to
calculate KE, PE and convert temp!
5 Point Questions
Sequential order…Person 1, 2, 3….
This order must be the same
throughout the entire game.
HOWEVER, everyone must answer
on white boards this time…but only
ONE person has the long
board….official answer.
#1
Define Energy
a. The ability to do work or cause
change
b. The transfer of work over time
c. How fast something moves
d. Anything that comes from the sun
that causes eventual movement
# 1 Answer
Define Energy
a.
b.
c.
d.
The ability to do work or cause change *
The transfer or work over time
How fast something moves
Anything that comes from the sun that
causes eventual movement
#2
Which is NOT an example of Kinetic
Energy?
a. A runner in the middle of a race
b. A car driving
c. A river flowing
d. A rock sitting at the top of a hill
# 2 Answer
Which is NOT an example of Kinetic
Energy?
a. A swimmer in the middle of a race
b. A car driving
c. A river flowing
d. A rock sitting at the top of a hill *
*Keep in mind, when you see potential and
kinetic on their own, without one of the 6
types of energy with it, assume it is
referring to mechanical energy
#3
Which of the following is an example
of Potential Energy?
a.
b.
c.
d.
Wind blowing a windmill
A runner on the starting block
A ball rolling
A person skydiving
# 3 Answer
Which of the following is an example of
Potential Energy?
a.
b.
c.
d.
Wind blowing a windmill
A runner on the starting block *
A ball rolling
A person skydiving
#4
I plug in my iPad in order to charge it.
What type of energy is being used
to recharge my iPad?
a. Mechanical
b. Electromagnetic
c. Electrical
d. Chemical
# 4 Answer
I plug in my iPad in order to charge it. What
type of energy is being used to recharge
my iPad?
a. Mechanical
b. Electromagnetic
c. Electrical *
d. Chemical
#5
I rub my hands together creating
friction. What type of energy is
involved that creates friction?
a. Thermal
b. Mechanical
c. Chemical
d. Nuclear
# 5 Answer
I rub my hands together creating
friction. What type of energy is
involved that creates friction?
a. Thermal
b. Mechanical *
c. Chemical
d. Nuclear
#6
A ball was launched 4 times
from 3 different
thicknesses rubber bands.
The distance the ball
traveled was measured
each time. The average of
the trials are shown.
What is the Test Variable?
What is the Outcome
Variable?
Rubber band launching
balls
Thickness of
Rubber band
Avg of 4 trials
(avg. distance
traveled in cm)
Thin
75
Medium
94
Thick
113
# 6 Answer
A ball was launched 4
times from 3 different
thicknesses rubber
bands. The distance the
ball traveled was
measured each time. The
averages for the trials are
shown.
What is the Test Variable?
THICKNESS OF RB
What is the Outcome
Variable? DISTANCE
TRAVELED
Rubber band launching
balls
Thickness of
Rubber band
Avg. of 4 trials
(avg. distance
traveled in cm)
Thin
75
Medium
94
Thick
113
#7
The amount of kinetic energy an
object has depends on its:
a. Mass and volume
b. Volume and friction
c. Mass and speed
d. Speed and density
# 7 answer
The amount of kinetic energy an
object has depends on its:
a. Mass and volume
b. Volume and friction
c. Mass and speed *
d. Speed and density
Honors— Remember KE = PE (Law)
KE = ½ mass X speed (velocity)
*Know GPE too!
#8
What is the efficiency of a blender that
uses 340 J of electrical energy to
blend your smoothie with 120 J of
mechanical energy.
# 8 Answer
What is the efficiency of a blender that uses
340 J of electrical energy to blend your
smoothie with 120 J of mechanical energy.
Efficiency = Energy Out ÷ Energy In (x 100)
35.3 % =
120 J
÷ 340 J
x 100
BONUS
What type of waves are
Electromagnetic waves?
Bonus Answer
What type of waves are
Electromagnetic waves?
Transverse
10 Point Questions
#1
The 2 types of energy (in sequential order of
occurrence) that are found in the interaction of
“Boiling water on the stove” are:
a. Thermal (stove) & Chemical (heated water)
b. Electrical (stove) & Thermal (heated water)
c. Electromagnetic (stove) & Thermal (heated
water)
d. Nuclear (stove) & Chemical (heated water)
# 1 Answer
The 2 types of energy (in sequential order of
occurrence) that are found in the interaction of
“Boiling water on the stove” are:
a. Thermal (stove) & Chemical (heated water)
b. Electrical (stove) & Thermal (heated water)
c. Electromagnetic (stove) & Thermal (heated
water)
d. Nuclear (stove) & Chemical (heated water)
#2
What type of Mechanical Energy
Interaction (force) is found when a
ping pong ball hits the rubber
paddle?
a. Drag
b. Applied
c. Elastic
d. Friction
# 2 Answer
What type of Mechanical Energy Interaction
(force) is found when a ping pong ball
hits the rubber paddle?
a. Drag
b. Applied
c. Elastic
d. Friction
#3
When the ping pong paddle launches the
ball, eventually, drag (and gravity) act
on the ball. How does the energy
change in the ball as drag and gravity
act on it?
a. Increases in mechanical (kinetic) energy
b. Increases in chemical energy
c. Decreases in mechanical (kinetic)
energy
d. There is no energy change in the ball
# 3 Answer
When the ping pong paddle launches the
ball, eventually, drag (and gravity) act
on the ball. How does the energy
change in the ball as drag and gravity
act on it?
a. Increases in mechanical (kinetic) energy
b. Increases in chemical energy
c. Decreases in mechanical (kinetic)
energy
d. There is no energy change in the ball
#4
A horse pulls a carriage. This is what
type of Mechanical Interaction
(force)?
a. Elastic
b. Friction
c. Applied
d. Drag
# 4 Answer
A horse pulls a carriage. This is what
type of Mechanical Interaction
(force)?
a. Elastic
b. Friction
c. Applied
d. Drag
#5
What would be the evidence that an
object is increasing its mechanical
(kinetic) energy?
a. The object is not moving
b. The object is slowing down
c. The object is moving at a constant
speed
d. The object is speeding up
# 5 Answer
What would be the evidence that an
object is increasing its mechanical
(kinetic) energy?
a. The object is not moving
b. The object is slowing down
c. The object is moving at a constant
speed
d. The object is speeding up
#6
A
B
Kid A is sitting at the top of the slide getting ready to
go; she has high _____________ Energy. Kid B is
sliding down the slide; she has high _____________
Energy.
# 6 Answer
A
B
Kid A is sitting at the top of the slide getting ready to
go; she has high POTENTIAL Energy. Kid B is
sliding down the slide; she has high KINETIC Energy.
#7
Describe the forms of energy involved
when watching TV.
#7
Describe the forms of energy involved
when watching TV.
Electrical to Electromagnetic (light) and
sound
*Could argue that heat is a wasted form
here also.
#8
What do all 6 types of Energy have in
common?
# 8 Answer
What do all 6 types of Energy have in
common?
They all can be transformed into each other
AND all 6 Cannot be created NOR
Destroyed (Law of Conservation of
Energy…..KNOW THIS!!!)
20 Point Questions
#1Remember Mrs. Twedt’s example of
the two silver spheres? I hit them
together with a piece of paper in
between. Explain the energy transfer.
#1 answer
Remember Mrs. Twedts example of the two
silver spheres? I them together with a piece
of paper in between. Explain the energy
transfer.
Sound is wasted
energy here (mechanical)
Food
Chemical
Hitting spheres
Mechanical
Friction b/t spheres
Thermal
Igniting Paper
Thermal/Chemical
#2Remember Mrs. Twedts example of
the radiometer? Explain the energy
transfer.
#2Watch Mrs. Twedt’s example of the
radiometer. Explain the energy transfer.
Sun
Electromagnetic
(light)
black paper absorbs high amounts
/white does not absorb much
Electromagetic
(radiation) *Thermal in here too
-unequal heating, convection
results
Spinning blades
Mechanical
#3
The law of conservation of energy also
states that when energy is
transforms/converted, the amount of
“useful” energy decreases in the
process. Give 2 examples of where
this “Wasted” energy went from the
sand/bottle experiment. EXPLAIN
# 3 Answer
The law of conservation of energy also states that when
energy is transforms/converted, the amount of “useful”
energy decreases in the process. Give 2 examples of
where this “Wasted” energy went from the sand/bottle
experiment AND EXPLAIN.
Energy went to:
• The bottle (absorbed the Thermal from the sand AND from
you)
• The air (the shaking caused vibrations which transformed
into sound)
• Back to you (also Thermal from the sand and bottle)
25 Point Questions
FOR THE GROUP
Temperature(degrees C)
Trial 1
oC
Trial 2
oC
Trial 3
oC
Average
oC
Uncertainty oC
Start
20
21
20
20.3
.5
After five minutes
of shaking
24
24.5
25
24.5
.5
Shake Times
True Value Range oC
19.8-20.8
24.0-25.0
Explain how I know with 100% certainty
that shaking the sand resulted in a
transfer of energy.
Temperature(degrees C)
Trial 1
oC
Trial 2
oC
Trial 3
oC
Average
oC
Uncertainty oC
Start
20
21
20
20.3
.5
After five minutes
of shaking
24
24.5
25
24.5
.5
Shake Times
True Value Range oC
19.8-20.8
24.0-25.0
Explain how I know with 100% certainty that shaking the sand resulted in a transfer
of energy.
Look at the True Value Range. The temperature of the sand during the initial trials
was between 19.8 and 20.8 degrees Celsius. The temperature of the sand after
shaking for 5 minutes was between 24 and 25 degrees Celsius. No matter WHAT,
those 2 ranges do not over lap, so even WITH human error included (uncertainty),
the ranges for the true value were completely different.
If the range for the
INITIAL was 20-22 degrees and the range for the after 5 minutes of shaking was 2124 degrees, they overlap. They share the values 21 and 22….SO technically, they
could be the same temperature before and after. That is NOT the case with this
data.
#2
What are the 6 types of energy? Give
me an example of each to show you
understand each one……if details
are needed, be sure you include
them!!!!!
# 2 Answer
See Foldable and/or J# 8 on
www.mrs-twedt.com