light, sound, heat & electricity

1. DIVISION WEBINAR SERIES ON SCIENCE
CONTENT AND TEACHING STRATEGIES
IN THE CONTEXT OF THE MOST ESSENTIAL
LEARNING COMPETENCIES (MELC) FOR
3RD QUARTER

2. CONTENT STANDARD:
The Learners should be able to…
Apply knowledge of the sources and
uses of light, sound, heat and electricity
TOPIC: LIGHT, SOUND,HEAT &
ELECTICITY (3rd Quarter)

3. PERFORMANCE STANDARD:
The Learners should be able to…
Describe sources of light, sound,
heat and electricity.

4. Most Essential Learning Competencies
Describe the different uses of light, sound,
heat & electricity in everyday life.

5. SOURCES OF LIGHT,
SOUND, HEAT &
ELECTRICITY

6. OVERVIEW
Light is a form of energy that
enables us to see all the things
around us.

7. OVERVIEW
Sound is another form of energy
produced by a vibrating body.

8. OVERVIEW
Heat is a form of energy. Heat
flows from hot objects to cool objects.

9. OVERVIEW
Electricity is a form of energy like
light, heat, and sound. Electricity works
only when an electric current flows
through a closed or complete circuit.

10. LIGHT

11. Light helps us see the beauty of
God’s creation…
Plants
Animals
Human

12. SOURCES OF LIGHT
Natural Sources of Light
 These sources come to Earth through natural
means which man cannot control.
Artificial Sources of Light
 Artificial light comes from sources that man
produces and controls.

13. NATURAL SOURCES OF LIGHT

14. SUN
The sun is a natural source of light. It is also the
primary source of light. Earth gets light from the
sun.

15. MOON
The moonlight we see at night is sunlight reflected from the
surface of the moon

16. STARS
The stars also light up the sky at night. Some stars provide a
very small amount of light because they are very far from us.

17. OTHER NATURAL SOURCES OF LIGHT
 bioluminescence

18. OTHER NATURAL SOURCES OF LIGHT
 bioluminescence

19. ARTIFICIAL SOURCES OF LIGHT

20. USES OF LIGHT
 You see the world around you. Light helps you play
and work.
 You can see the colors of the traffic lights to guide
you when to stop, slow down, or go.
 You can read newspapers, books, and even email
messages.

21. USES OF LIGHT
 You can read newspapers, books, and even email
messages.
 You can watch television programs and movies, and
play video games.
 You can take pictures of your friends using a camera.

22. Proper and Safe Use of Light at Home
 Protect your eyes from too much light.
 If you are reading, use enough light.
 Avoid looking directly at the sun or at any
bright source of light.

23. Proper and Safe Use of Light at Home
 Inside the house, let the sunlight
in.
 Switch off any artificial light when nobody is using it.
 Do not put a lighted candle or alcohol or gas lamp
near combustible objects.
 Do not leave a lit candle or gas lamp unattended.

24. KEY CONCEPTS
 Light comes from the sun. It is the
primary source of heat and light.
 Light comes from different sources natural
sources and artificial sources.