Different energy tranformation

1. Energy
Transformation

2. Gravitational
Force
Frictional
Force
Force exerted by
objects to each other
Opposes motion
between two surfaces
touching each other
REVIEW OF PREVIOUS LESSON
Gravitational
Force
Frictional
Force

3. Can you still
remember the four
kinds of friction?
rolling sliding
fluid static

4. When an object rolls
on a surface, rolling
friction is present.

5. Sliding friction occurs
when two surfaces rub
against each other.

6. When a swimmer swims in water or when an
airplane glides through air, fluid friction is
present.

7. When an object stays steady on a surface,
static friction is present.

8. If you could have a
superpower related to energy,
what would it be?

9. Can you think of some amazing real-
world examples where energy transforms
to make things happen, like the sun
turning into warmth or wind turning into
power?

10. INTRODUCTION OF THE NEW LESSON
Our lesson today is
about energy, its
types and forms.

11. What would happen if you
throw a paper airplane to
the air?
MOTIVATION
Will it move away from
you?
Yes, it will move away
from you because you
exerted force on the
paper airplane.

12. • Energy is defined as the ability to do
work.
• When work is done on an object, energy
is transferred to that object.
• Therefore, it will move.

13. Energy can be classified into two (2) general types.
motion
Energy at rest Energy in motion

16. Mechanical Energy is a form of
energy possessed by a
moving object.
A moving bicycle has
mechanical energy.

17. Chemical Energy is the kind of energy
stored in molecules.
The laptop battery contains chemical
energy which is then turned to electrical
energy to power the laptop when we use
it.
Another example is food.
When we eat food, we can use the
chemical energy to provide us energy to
move and do different activities.

18. Light energy can travel through
empty space.
Example of this are the light
from light bulbs, ultraviolet
rays, x-rays and microwaves.

19. Electrical Energy is the energy
produced by moving electrons.
Examples are lightning and
electric current that flows
through electrical wires.

20. Magnetic Energy is possessed
by an object that has magnetic
fields like magnets.

21. Sound Energy is the energy
produced by vibrating objects.
When objects vibrate, sound is
produced.
When you strum the guitar
chords, sound energy will be
produced.

22. Thermal Energy is a form of
energy present in every body
due to the motion of
molecules.
It is also called heat energy.
A hot iron possesses thermal
energy.
The sun and heat from
volcanoes have thermal energy.

23. Nuclear Energy is energy
released from the splitting and
fusing of nucleus of an atom.
Nuclear power plants and the
sun possesses nuclear energy
which is a very powerful source
of energy.

24. RECAP
What are the types of
energy?
The types of energy are
potential energy and kinetic
energy.

25. RECAP
What are the eight (8)
kinds of energy?
The eight (8) kinds of energy
are mechanical energy,
chemical energy, radiant or
light energy, electrical energy,
magnetic energy, sound
energy, thermal energy and
nuclear energy.

26. ACTIVITY
Now let’s move on to
the activity about the
lesson.

27. Direction: Classify the forms of energy present in the given
examples below. Write mechanical energy, chemical energy,
or light energy, electrical energy, magnetic energy, sound energy,
thermal energy or nuclear energy. Write your answer on the blank
before the number.
1. burning matchstick
2. flying kite
3. lightning
4. radio
5. battery
6. sun
7. moving tricycle
8. flashlight
9. burning wood
10. food

28. • The Law of Conservation of Energy states
that energy cannot be created or destroyed. It
may be transformed from one form into
another, but the total amount of energy never
changes. Energy can be changed from one
form to another such as chemical energy into
mechanical energy, heat energy, and many
more.
Energy Transformation

29. • The Law of Conservation of Energy states
that energy cannot be created or destroyed. It
may be transformed from one form into
another, but the total amount of energy never
changes. Energy can be changed from one
form to another such as chemical energy into
mechanical energy, heat energy, and many
more.
Energy Transformation