Identify the forms of energy
are being used by the
following:
1. automobile 2. guitar
3. electric fan 4. Television
set
5. electric flat iron
Can energy be
converted from
one form to
another?
https://www.youtube.com/watch?v=8atIc3XixY&t=10s
I.Problem: How is energy
transformed to another
form?
II. Materials: guitar, battery-
operated toy, matches,
candle or alcohol lamp
Group I and II
Observe how energy is transformed in
the different objects when they work.
1. Light the candle
IV. Questions:
1. What form of energy is present in the
candle?
2. How did this energy change to another
form when the candle was lighted?
3. What conclusion could you make out of
this activity?
Group III and IV
Observe how energy is
transformed in the different objects
when they work.
1. Pluck the string of the guitar
2. How is energy changed when you
pluck the strings of guitar?
3. What form of energy is present in
the battery?
4. What conclusion could you make
out of this activity?
Group V and VI
Observe how energy is transformed in
the different objects when they work.
Place the battery in the battery- operated
car
IV. Questions:
1. How is this energy changed when it is
placed in a toy car?
2. What conclusion could you make out of
this activity?
What other examples of
home appliances do you
have showing energy
transformations.
Make a diagram for each
appliance illustrating the
transformation of energy
that takes place.
Explain how energy transformation
takes place..
QUIZ…
Energy is stored as ________________
in the foods we eat. It is also stored
in batteries and in a match that is
used to light a candle.
A.electrical energy
B.chemical energy
C.mechanical energy
D. thermal energy
2. When the _______________ of an
object increases, its particles move
faster, making it feel warm to the
touch.
A.chemical energy
B. electrical energy
C.thermal energy
D. mechanical energy
3.The operation of which of
the following devices involves
a single change of one form of
energy to another?
A) flashlight
B) nuclear power plant
C) lightbulb
D) coal power plant
4.The primary source of
energy for society today
is obtained directly from
A) chemical energy.
B) nuclear energy.
C) solar energy.
D) geothermal energy.
5.Which one of the following
sources of energy did not
originate from the sun?
A) coal
B) geothermal energy
C) wind energy
D) biomass
Assignment:
Complete the transformation of energy to another energy.
1. Light energy
Motorcycle
2. Heat energy
Oven toaster
3. Mechanical energy
Fluorescent bulb
4.Sound energy
5. Radiant energy
Sunlight
Radio