Electrical energy can be transformed or changed into heat, light, and sound energy, as well as the energy of motion. When an electrical current passes through a light bulb, the electrical energy is transformed into light energy, causing the bulb to glow. In a toaster, electrical energy is converted into heat energy, which warms the bread. An electric fan transforms electrical energy into kinetic energy as the blades spin and move air around a room. Electrical devices are also able to produce sound through the transformation of electrical energy. The law of conservation of energy states that energy cannot be created or destroyed, only changed from one form to another.

1. Transformation
of Electrical
Energy

2. Benchmark: SC.5.P.10.4 Investigate and explain that electrical
energy can be transformed into heat, light, and sound energy, as
well as the energy of motion.
Objective: Students will explain that electrical energy can be
transformed into heat, light, and/or sound energy, as well as
energy of motion.
Essential Question: How can electrical energy be transformed
into other forms of energy?
Home Learning:

3. Word Wall

4. ENERGY TRANSFORMATION
 The law of conservation of energy
states that the energy can neither be
created nor destroyed.
 Energy can move from one object to
another object.
 When energy changes from one form to
another, it is called transformation.
 Every time an energy change occurs
some heat energy is released.

5. TRANSFORMATION OF ELECTRICAL ENERGY
 Electricity is a form of energy that is produced
when electrons move from one place to another
place.
 Electrical Energy can be transformed or changed
into heat, light, and sound energy, as well as
energy of motion.
Heat Light Sound

6. Benchmark: SC.5.P.10.3 Investigate and explain that an
electrically-charged object can attract an uncharged object
and can wither attract or repel another charged object
without any contact between forces.
Objective: Students will explain that an electrically-charged
object can attract an uncharged object and/or either attract or
repel another charged object without any contact between the
objects.
Essential Question: How will an electrically charged object
interact with other charged objects?
Home Learning:

7. Electric Charges
+ +
_
_+
_
Like charges repel each other.
Unlike charges attract each other.
Attract means to pull on. Repel means to push against.

8. An electrically charged object can attract an
uncharged object and/or repel another charged
object without any contact between the objects.
ELECTRICALLY CHARGED OBJECTS
Attraction Attraction
Repulsion/Repel

9. Share and Write
Accountable Talk

10. Discussion Point
 Partner A
Answer the following question:
What are 3 ways in which electrical energy can be
transformed? Give an example of each.
 Partner B
Answer the following question:
What is the difference between attraction and
repulsion? What happens to like charges and what
happens to unlike charges?

11. Benchmark: SC.5.P.11.1 Investigate and illustrate the
fact that the flow of electricity and materials that do not.
Objective: Students will determine that the flow of
electricity requires a closed circuit.
Essential Question: How can electrical energy be
transformed into other forms of energy?
Home Learning:

12.  Electric current flows through a path called a circuit.
 A circuit is like a big loop.
 In order for the current to flow through the loop, the path
must have no breaks; in other words, it must be closed.
 A closed circuit has no breaks in it.
 An open circuit has a break.
ELECTRIC CIRCUITS
Closed circuit – Light bulb is on Open circuit – Light bulb is off

13. Benchmark: SC.5.P.11.2 Identify and classify materials
that conduct electricity and materials that do not.
Objective: Students will identify and/ or classify materials
that conduct electricity and materials that do not.
Essential Question: How will an electrically charged
object interact with other charged objects?
Home Learning:

14.  Anything that allows heat/thermal energy or electricity to
move through it easily is a conductor.
 Anything that slows the movement of heat/thermal energy
or electricity is an insulator.
CONDUCTORS AND INSULATORS
The cookie sheet is a conductor.
Metals are good conductors of
heat/thermal energy and electricity.
The oven mitt the mom is wearing is
an insulator. Thick fabrics, plastics,
and rubber are not good conductors
of heat/thermal energy and
electricity.

15.  Heat is the transfer of thermal
energy between objects of
different temperatures.
 Heat travels from a warmer
object to a cooler object.
 The heat will continue to flow
until the temperature of the
two objects has equalized, or
reached the same
temperature.
FLOW OF HEAT

16. Energy from the sun can be used to heat objects.
ENERGY FROM THE SUN
Solar energy mostly passes through the atmosphere and this heat
is absorbed by all objects, such as humans, trees, flowers, roads,
etc. These objects will then warm up. Dark objects, such as asphalt
roads, will absorb and warm faster than light colored objects.
When sunlight is not present, heat may be lost.

17. Share and Write
Accountable Talk

18. Discussion Point
 With your shoulder partner, have a discussion
about the following:
 Discuss the difference between open and
closed circuits.
Discuss conductors and insulators and give
examples.
Discuss what you have learned about the flow
of heat.

19. Checks for Understanding
1. Benny’s family bought a new electric stove.The stovetop had several
large circles on it.When Benny’s father turned on the stove, the circles
glowed with a red color.What can you infer about these circles?
A.The circles gave off both heat and light.
B.The circles gave off only light to show where to place the pans.
C.The circles gave off light but not heat.
D.The circles gave off light to help the cook see the stove.

20. The electrical energy from the stove was
converted into heat energy to cook the
food. When the metal rings on the stove
become extremely hot, they glow a
reddish orange color which is light
energy.

21. 2. It was a hot, sunny day when Marsha’s family was visiting
the beach. Marsha took off her sandals and headed for the
water.The sand was so hot, she had to run so her feet would
not burn.Which of the following best explains why the sand
was so hot?
A. People running in the sand made the sand hot.
B. Heat and light from the Sun made the sand hot.
C.Wind blowing over the sand made the sand hot.
D.The temperature that day made the sand hot.
Checks for Understanding

22. The solar energy (light energy) passes through
the atmosphere and this heat is absorbed by
all objects including the sand Marsha was
walking on.Therefore, heat and light from the
Sun made the sand hot.

23. 3. Alex turned on the light in his room so he could do
his homework.What type of energy transformation
is taking place in Alex’s room?
A. electrical to light
B. light to mechanical
C. mechanical to heat
D. heat to electrical
Checks for Understanding

24. When the switch is flipped on, the circuit is
closed allowing the electrical energy to
flow to the lamp, which lights up.
Electrical Energy  Light Energy

25. Write a summary paragraph explaining
your understanding of one of the
following topics:
 How electricity transforms into other forms of
energy?
 The difference between conductors and insulators.
 The flow of heat.
 The difference between open and closed circuits.