powerpoint on source and classification of light

2. “Heavenly Father, we come before
you today to ask for your guidance
and wisdom as we begin this class.
We ask for your help in
understanding the material and
retaining the knowledge we will
learn. We ask for your protection as
we engage in discussions and
activities. Amen

4. Give a number from 1- 10. Use the number to
determine who will answer the question.
Short recap on properties or characteristics of
sound waves.

5. 1. What is frequency?
2. What is the speed of sound?
3. Which material sound waves travel the
fastest?
4. Trace the pathway of sound in the ear?

7. Think logically and try to guess word
that is conveyed by the pictures.

15. Flash+Lie +T

16. Flashlight

18. Lay + Sir

19. Laser

21. Infer that light travel in a straight line.

22. 1. Identify and categorize various
sources of light.
2. Describe the differences between
natural and artificial sources of light.
3. Recognize the importance of light
sources in everyday life.
• .

23. Light
-Light is an electromagnetic wave, and
doesn't need a medium in order to
propagate.
-Light travels in a straight path in a
vacuum
- Light has a speed of 299,792,458 m/s
-It takes 499 seconds or approximately
8 minutes for light to travel from the sun
to Earth.

24. Using the Sun’s diagram pattern, identify different
sources of light in our surroundings. Make a
similar diagram and write your answer on a
separate sheet of paper.

25. Identify the different sources of light.

26. Sources
of Light

27. Guide Questions:
1. What are the different sources of light?
2. What are the different sources of light
present in nature?
3. What do you call this kind of source of
light?
4. Which of these sources are made by man?
5. What do you call these kinds or sources of
light?

28. Any object that emits light is a
SOURCE OF LIGHT

29. Two Categories of Source of Light!

30. En en me!
Direction:
Classify the following source of light as
Natural or Artificial source of light. Write
in the corresponding column.

32. Cite the importance of light.

33. Read and understand the paragraph below. Then
write your answer on a separate sheet of paper.

34. Light is a form of energy found in our surroundings.
Light from the sun is a source of energy that can run
different technologies throughout the world. Light
can be natural or man-made, but no matter how it
was formed, we utilize it in different ways in every
single day of our lives.

37. Direction:
Read the statement/question carefully.
Choose the best answer. Write the
corresponding letter in your answer
sheet.

38. Luminous Non-
luminous
Opaque Transparent

39. sun Flashlight Jellyfish Lightning

40. star
firefly
Light
emitting
diode
lightning

42. Your at home