Grade 8 SCIENCE Picture Analysis

SY 2017-2018

Quarter: 1st Topic:Colors of Light Date:

Properties and Day:
Characteristics of Light

I. OBJECTIVES:
Given the necessary materials, at the end of the period, 75 %
of the students will be able to;
a.describe properties and characteristics of light
b. explain the occurrence of spectacular events in the sky like
rainbows, red sunset and blue sky.
3. infer that white light is made up of different colors of light.

II. SUBJECT MATTER:

A. Topic: Properties and Characteristics of Light
Subtopic: Refraction of Light-Dispersion
Learning Competency
Demonstrate the existence of the color components of visible
light using a prism or diffraction grating;
B. MATERIALS
Ppt presentation

C. REFERENCES
Science learners module pp 91-99
Science Teachers Guide pp 57-60
www. Youtube .com/ refraction of Light
www. Physics classroom.com Questions?
The pictures above show properties of light and how such
property is being processed.
III. STRATEGIES 1.Can you tell the properties of light being exhibited?
A. DAILY ROUTINE 2. How do light travels?
Prayer, Attendance, Cleanliness of the room 3. What kind of wave is light wave?
4. When it bounces off and bends what property is similar to
B. REVIEW sound wave?
Characteristics and Properties of Sound 5. What other properties of light are common to sound
waves?
Velocit
E. ANALYSIS
Does
not y 1. What are the different properties of light?
travel Wavel
in a ength 2. Why do we see spectacular events in the sky like rainbows,
vacuu
m
Sound
red sunset and blue sky?
Longit
udinal
3. How are refraction and dispersion demonstrated in light?
4. Among the different colors of light, which is bent the most
Reflect
ion
Refrac
tion
Frequency
and the least?
F. ABSTRACTION
Properties of Light
C. MOTIVATION 1. REFLECTION-Light bounces off surface at same angle it hits.
Introduce a character named Roy G. Biv. Ask students 2. REFRACTION-bending of waves when passing from one
whether they are familiar with the character. Ask them also if medium to another
there is a connection between the character and the lessons. 3. DIFFRACTION- bending of waves around a barrier
Ask the students if they could guess some information or depends on the wavelength and size of the opening barrier
concept from the name of the character.
4. INTERFERENCE-When two waves meets, they have an
1. Why do we see spectacular events in the sky like rainbows,
effect with each other.
red sunset and blue sky?
2. How are refraction and dispersion demonstrated in light? G. APPLICATION.
3. Among the different colors of light, which is bent the most Light has gone all the way from a mere transfer of energy to
and the least? the creation of colors for entertainment and other purposes.
Most of our gadgets are light emitting for efficiency when used
at night. In the field of medicine light is used to cut through the
D. ACTIVITY
skin for surgery as in laparoscopy. The health sciences are
also using light for other medical purposes. But the most
importantpurpose is for humans and other animals to see the
beautiful world through light.

F. ASSESSMENT
Read the questions carefully and write the letter of correct
answer on your quiz notebook.
1. Electromagnetic waves are
a. longitudinal.
b. transverse.
c. both longitudinal and transverse.
d. None of the above.
2. What is the correct name for a glass or plastic shape that
splits white light into the colors of the spectrum?
a. block b. lens c. prism d. rainbow
3. Kate has a fish tank on her window sill. When she looks
through it, the outside looks as if it has been moved sideways.
This is because of
a. absorption b. reflection c. refraction d solution
4. A rainbow formed on a compact disc, what property of light
is exhibited?
a. diffraction b. interference c. refraction d reflection
5. When you look at the mirror you see yourself, this is best
explained by what property of light?
a. diffraction b. interference c. refraction d reflection

IV. ASSIGNMENT
Bring the ff. Materials
Color Spectrum Wheel Pattern Cardboard or illustration board
white screen
button fastener
glue or paste
1.What does the hierarchy of colors of light exhibit in terms of
energy?
2. Which color of light has the greatest energy?
Ref. pp.102-105 of Learners Module

Grade 8 SCIENCE
SY 2017-2018
Quarter: 1st Topic: Colors of Light Date:
Hierarchy of Colors of Day:
Light

I. OBJECTIVES:
Given the necessary materials, at the end of the period, 75 %
of the students will be able to;
a.infer that different colors of light emits energy.
b. determine which color of light emits the least and the most
energy.
3. observe that bending depends on the refractive index color
of light
II. SUBJECT MATTER:
A. Topic: How would you relate the refractive index with the bending of
Subtopic: Refraction of Light-Dispersion the color of light?
Learning Competency 2. Which color has the MOST energy?The color spectrum
explain the hierarchy of colors in relation to energy; wheel revisited
explain that red is the least bent and violet the most bent Students will do the following procedures.
according to their wavelengths or frequencies; 1. Try out your Color Spectrum Wheel by positioning the
B. MATERIALS innermost of the flaps on COLOR SPECTRUM. This will
activity sheet, video clip on refraction of light simultaneously position the other flaps to WAVELENGTH,
FREQUENCY, and ENERGY.
C. REFERENCES 2. Turn the upper wheel and observe the combinations.
Science learners module pp 91-99
3. Fill in the table below with the corresponding combinations
Science Teachers Guide pp 57-60
you have observed using your Spectrum Color
www. Youtube .com/ refraction of Light
Wheel.Formulate questions that follow.
www. Physics classroom.com
http://www.scienceclarified.com
III. STRATEGIES
A. DAILY ROUTINE
Prayer, Attendance, Cleanliness of the room
B. REVIEW
Relation of Wavelength and Frequency of Soundwaves
Which do you think will have a higher and lower frequency?

C. MOTIVATION

What do you observe in the picture?

What 3 colors of light would produce white light?
E. ANALYSIS
D. ACTIVITY 1. How would you relate the refractive index with the bending
Differentiated activity of the color of light?
1.Red versus violet...(Refractive index color of light) 2. Which color registered the highest frequency? shortest
Students will analyze the table below and write observations. wavelength?
 3. Which color registered the lowest frequency? longest
wavelength?
4. What did you observe about the wavelengths and
frequencies of the different colors of light?

5. What did you observe about the products of

frequencies and wavelengths?
6. Does the frequencies of the colors of light increase
from Red to Violet
7. What did you observe about the corresponding
energies from Red to Violet?
8. How is frequency relate to energy of colors of light?
F. ABSTRACTION
Light is a form of electromagnetic radiation: a form of energy
carried by waves. The term "electromagnetic radiation" refers to a
vast range of energy waves, including gamma rays, X rays,
ultraviolet rays, visible light, infrared radiation, microwaves, radar,
and radio waves. Of all these forms, only one can be detected by
the human eye: visible light..
With the concept of dispersion, colors of light are hierarchically
arranged as ROYGBIV according to frequency and energy of the
colors of light. Red happens to have the lowest frequency and the
least energy. Energy and frequency increases as one moves from
red light towards violet light. This display of colors of lights by
dispersion of white light is one of the consequences of refraction of
light aside from the apparent depth mentioned above. Other
consequences are spectacular phenomenon of blue skies and red
sunsets.
G. APPLICATION.
What colors do you see if you look inside a computer or TV
Screen?
F. ASSESSMENT
Read the questions carefully and write the letter of correct answer
on your quiz notebook.
1. Which color has the MOST energy?
a. red b. blue c. violet d. green
2. Which of the following lights has the highest frequency?
a. red b. blue c. violet d. green
3. Which of the following lists the 6 colors of the visible spectrum
from shortest to longest wavelength?
a. Red, Orange, Yellow, Green, Blue, Violet
b. Orange, Red, Yellow, Green, Blue, Violet
c. Violet, Blue, Green, Yellow, Orange, Red
d. Blue, Violet, Green, Yellow, Orange, Red
4. This type of electromagnetic wave has the most penetrating
power:
a. X-rays b. UV Rays
c. Radio waves d. Infrared waves
5. What 3 colors of light would produce white light?
a. Red, Orange & Yellow c. Red, Yellow & Green
b. Red, Yellow & Blue d. Red, Green & Blue
IV. ASSIGNMENT
What happens to solids, liquids, or gases when they absorb or
release heat?
Does heat affect all kinds of materials in the same way?
Are heat and temperature one and the same?