sample ppt for class observation

2. COLORS
in

3. ELICIT
How do Sunlight reach the
Earth Surface?

4. Engagement
With your seatmate, let’s do the Think-
Pair-Share activity.
Discuss with your seatmate our Objectives
for this topic in 1 minute.

5. Objectives
a. Define light
b. Enumerate the different properties of light
Reflection
Refraction
Diffraction
c. Give the relationship of wavelength,
Frequency and Energy

6. Encryption: Let’s do
Math
Let’s Decode the Code!
a=1 b=2 c=3 d=4 based on alphabet
1. x+4=?
2. x+1=?
3. x -1= ?
4. x=h=? The value of H is the value of x
5. x+12=?

7. What is the
code?
12, 9, 7, 8, 20
L I G H T

8. Explora
tion
What is the color of the Sky?

9. Explora
tion
Technically, the short wavelengths that
scatter across the sky correspond to the
colors blue and violet, making the real
color of the sky a bluish purple.
However, the cone cells in our eyes that
detect color aren't very sensitive to violet,
so we see the sky as blue.

10. Explora
tion
Let’s meet Mr. ROY G. BIV
ESSENTIAL QUESTIONS
How does formation of Colors occur?

12. Explana
tion

13. What is
Light
is a Transverse,
Electromagnetic wave that can
be seen by the typical human
as colors and brightness.

14. What is
Light
a form of Energy that requires
no medium in order to
propagate.

15. What is
Light
It can be Particles (Photons) it carry a fixed
amount of energy but have no mass.

16. What is
Light
It can be waves (portrays different Properties) a
transverse wave, characterized by alternating electric
and magnetic fields propagating perpendicular to
the direction of the wave.

17. How fast the
Light is?
Light travels VERY FAST – around 300,000,000
meter per second in Vacuum.
At this speed it
can go around the
world 8 times in
one second.

18. Properties of
Light
Light as wave possess different properties such as Reflection,
Refraction, diffraction and Dispersion.

19. Reflectio
n

20. Reflection
It is simply
describe as the
bouncing back
of light.

21. Refraction
It is the change in
direction of a light wave
passing from one medium
to another or from a
gradual change in the
medium.

22. Refraction
is the bending of light when
it travels from one medium
to another of different optical
densities

23. Law of Refraction
The law of
refraction gives
us a way of
predicting the
amount of bend.

24. Formula
v = c / n
V is the Index of refraction
C is the speed of light
N is the refractive index

25. Refractive Index

26. Speed of light in different Medium

27. Dispersion
The process of separation
of visible light into its
different colors

28. Dispersion

29. Diffraction
It is the slight
bending of light
as it passes
around the edge
of an object.

30. Uses of Light
The science of Light has gone
all the way from a mere
transfer of energy to the
creation of colors for
entertainment and other
purposes.

31. Uses of Light
The health sciences are also
using light for other medical
purposes. But the most
important is for us to see the
beauty of world through light.

32. Uses of Light

33. Uses of Light

34. Uses of Light

35. Uses of Light

36. Uses of Light

37. Uses of Light

38. Uses of Light

39. Summary
As a wavelength increases in size,
its frequency and energy (E)
decrease. From these equations
you may realize that as the
frequency increases, the
wavelength gets shorter. As the
frequency decreases, the

40. Elaboration
Using creative presentation: (5 Minutes)
“Describe Life without Light”

41. Evaluation
1. A process of bouncing back of light is known
as___
a. Reflection
b. Refraction
c. Diffraction
d. Dispersion

42. Evaluation
2. When light travels from different
medium its speed tends to___
a. Increase
b. Decrease
c. Remains the same
d. Can not be determine

43. Evaluation
3. How do light reaches the Earth
Surface?
a. Radiation
b. Refraction
c. Transmission
d. Conduction

44. Evaluation
4. The process of separation of
visible light into its different colors
a. Diffraction
b. Dispersion
c. Reflection
d. Refraction

45. Evaluation
5. How can you describe light in vacuum
a. They travel in same frequency and
speed
b. Red travel faster than any other colors
c. It can not travel in vacuum because in
needs particles in order to propagate
d. Violet travels faster than any other
colors