WALKTHROUGH
ENERGY TRANSFORMATIONS
Energy can transfer from object to object and change into different forms. Energy
transformations can be represented by flow diagrams.
Pages
Inquiry points
8
1
8
Suggested time
15 min
Science extra
T...
T...
Consider the similarities and
differences shown in the two videos.
Answers
T...
T...
1IP
Read the defintions for: law, fact,
hypothesis, belief, theory, and what
the law of conservation of energy
states.
Differences: Video 1 involves a
chemical reaction while video 2
does not.
Similarities: Both videos show
the transferring of energy
between objects.
Physics is full of rules that describe how properties are conserved.
Ask students to compare the law of conservation of mass with the
law of conservation of energy. Ask your more enthusiastic students
to research the law of conservation of momentum.
ACTIVITY: ENERGY TRANSFORMATIONS
©3P Learning
|
intoscience.com
WALKTHROUGH
2
Explore this
Consider how energy flow diagrams
represent the transformation of
energy in objects.
Read about energy transformations
and the sun.
Answers
1IP
• Light
• Heat
3
Consider the energy flow diagram for a
radiometer.
Answers
1IP
• Light energy
• Kinetic energy
All energy changes result in some heat being lost to the
environment, either through the convection of molecules moving
away or through low level radiation, such as infrared light.
Ask students to consider what this might mean for the universe if
no new energy can ever be created.
ACTIVITY: ENERGY TRANSFORMATIONS
©3P Learning
|
intoscience.com
WALKTHROUGH
4
Consider the energy flow diagram for a
dynamo.
Answers
1IP
•
•
•
•
Kinetic energy (arm)
Kinetic energy (generator)
Electrical energy
Heat energy, Light energy
5
Consider the energy flow diagram for a
candle.
Answers
1IP
• Chemical potential
• Light energy, Heat energy
6
Consider the energy flow diagram for a
basketball.
Answers
1IP
ACTIVITY: ENERGY TRANSFORMATIONS
• Gravitational potential
• Kinetic energy
• Sound energy, Elastic potential,
Heat energy
©3P Learning
|
intoscience.com
WALKTHROUGH
7
Consider the energy flow diagram for a
solar-powered car.
Answers
1IP
8
Consider the different energy
transformations occuring the video.
• Light energy
• Electrical energy
• Kinetic energy
Explore this
Read about mechanical energy.
Answers
T...
1IP
• Ball dropping: Gravitational
potential
kinetic energy
• Water boiling: Chemical
potential
kinetic energy
• Hair dryer: Electrical energy
heat energy
ACTIVITY: ENERGY TRANSFORMATIONS
©3P Learning
|
intoscience.com