Strategic Intervention Material on Science Grade 10 Title: Gotta Catch 'EM All (Electromagnetic Waves) Prepared by: ANJAYLO B. PASCUA Teacher I, Ilwas High School

1. DEPARTMENT OF EDUCATION
REGION III
DIVISION OF ZAMBALES
SUBIC NATIONAL HIGH SCHOOL ANNEX –V
ILWAS HIGH SCHOOL
S.Y. 2016—2017

2.  compare the relative wavelengths of different forms of electromagnetic waves
 Describe an electromagnetic wave.
 Show the relationship among the speed of the wave, frequency, and it’s
wavelength
 Identify the different types of electromagnetic wave
 Give the characteristics of the electromagnetic waves as compared with visible
lights
Hey, brother! Will you
please help me and my
friends to evolve fast?
Sure! But you
have to explore
first the concept
of EM Waves!

3. Accelerating electrons produce electromagnetic waves. These waves are a
combination of electric and magnetic fields. A changing magnetic field produces
an electric field and a changing electric field produces a magnetic field. Both the
electric field and the magnetic field oscillate perpendicular to each other and to
the direction of the propagating wave.
All electromagnetic waves can travel
through a medium but unlike other types
of waves, they can also travel in vacuum.
They travel in vacuum at a speed of
3x108
m/s and denoted as c, the speed
of light. The wave speed, frequency, and
wavelength are related by the following
equation:
V = f
Where: v is the wave speed = c = 3 x 108
m/s
is the wavelength (in meters)
f is the frequency (in Hertz)
Here are some
notes for you!
Good luck in your
journey!

4. Help SQUIRTLE to become stronger and achieve Mega Evolution to
become BLASTOISE by identifying whether the statements on some
staircases is TRUE or FALSE.
Electromagnetic waves can also
transfer energy in a vacuum.
TRUE
FALSE
Begin here...
Wertortle Stage
Blastoise Stage
A wave is a disturbance that
transfers energy.
TRUE
FALSE
The electric field and the
magnetic field oscillate parallel
to each other
TRUE
FALSE
As wavelength decreases, the
frequency of wave also decreases
TRUE
FALSE
Most EM Waves are invisible and
undetectable.
TRUE
FALSE

5. Wave speed can be
calculated from the
frequency (f) and
wavelength ( λ) using
the formula:
v = λf
where : v—wave speed
= 3 x 108
m /s
λ—wavelength (in
meters)
f—frequency (in Hz)
PICHU requires 10 megavolts to transform fully into RAICHU. Help
him transform by solving the two problems below. The first
question was already solved as an example.
Example:
What is the frequency of radio waves with
wavelength of 20 m?
Given: v = c = 3 x 108 m/s v = c = λf
λ = 20 m f = c/λ
f = ? = 3 x 108 m/s
20 m
f = 1.5 x 107 Hz
Help me
solve these
problems!
What is the frequency of
light waves with
wavelength of 5 x 10-7 m?
What is the
wavelength of ultraviolet
ray if it’s frequency is
4 x 1016 Hz?

6. Analyze the figure below that summarizes the characteristics of
different EM waves and help CHARMANDER to evolve by doing the
activity on the next page.

7. KEEP THE FIRE BURNING by helping CHARMANDER to arrange the EM waves in correct order in
terms of increasing WAVELENGTH and decreasing FREQUENCY. A successful task will make him
evolve into CHARIZARD.
Be careful Bro! A mistake
can put out the fire
because it splashes water.

8. Guide Bulbasaur in connecting the vines of the
following EM Waves on Column A with their
corresponding wavelengths on Column B.
1.X—Ray
2.Gamma Ray
3.Infrared
4.Radio Wave
5.Microwave
6.UV Ray
7.Visible Light
A. > 1 x 10-1 m
B. 1x 10-3 to 1 x 10-1 m
C. 7 x 10-7 to 1x 10-3 m
D. 4 x 10-7 to 7 x 10-7 m
E. 1 x 10-8 to 4 x 10-7 m
F. 1 x 10-11 to 1 x 10-8 m
G. < 1 x 10-11 m

9. Radio Wave
Infrared
Microwave
Visible Light
Ultraviolet RaySoft X Rays
Hard X RaysGamma Ray
Assemble correctly a
face of a rubics cube
provided by your
teacher by arranging
the different EM waves
in terms of increasing
frequencies , from
left to right, and
from top to bottom.

10. Let us have a battle. Fight
with my Pocket monsters
by playing Fact or Bluff
game!
FACE YOUR DEFEAT!
Earn an extra XP points by
dwelling with a Pokemon
trainer in a Fact or Bluff
Game. You can win over his
pocket monsters by answering
all the statements correctly.
1. Electromagnetic wave is considered as a
longitudinal wave.
2. The longer the wavelength
of the wave, the higher it’s
frequency.
3. Gamma rays have the highest
frequency among all EM waves.
4. The wavelength of UV rays is
as small as a water molecule.
5. EM waves do not require a
medium to propagate.
85 XP
120 XP
215 XP
347 XP
500 XP

11. Compose a song that will
cover the characteristics of an
EM wave and its’ different
types based on varying
frequencies and wavelengths.
Complete the ACROSTIC
below to summarize the
properties and characteristics
of EM waves and its’ types.
P—
O—
K—
E—
M—
O—
N—
Based on your
understanding, draw/
paint your own version
of EM Spectrum.
Showcase your talent in expressing what you had learned by
doing one of the tasks below.

12. Electromagnetic waves are transverse
waves that can propagate with or without a
medium.
All EM waves can travel as fast as
3 x 108 m/s in a vacuum. This is the same with
the speed of light, c.
The longer the wavelength of a wave, the
lower its’ frequency; and the shorter the
wavelength of a wave, the higher its’ frequency.
Electromagnetic Spectrum is a
continuum of different EM waves that are
arranged based on frequency and wavelength.
EM Spectrum consists of radio wave,
microwave, infrared, visible light, ultraviolet
ray, x-ray, and gamma ray.
Physics. Salmorin, L.M. & Florido, A.V.,
Abiva Publishing House, Inc. 2010.Quezon
City. 283-285.

13. Activity 1
FALSE
FALSE
FALSE
TRUE
TRUE
Activity 2
1. 6 X 1014
Hz
2. 7.5 x 10-9
meters
Activity 3
1. Gamma Ray 5. Infrared
2. X-Ray 6.
Microwave
3. Ultraviolet Ray 7. Radio Wave
4. Visible Light
Activity 4
1. F
2. G
3. C
4. A
5. B
6. E
7. D
Assessment 1
1. Radio Wave
2. Microwave
3. Infrared
4. Visible light
5. Ultraviolet Ray
6. X-Ray
7. Gamma Ray
Assessment 2
1. BLUFF
2. BLUFF
3. FACT
4. BLUFF
5. FACT
Enrichment Activity
(Answers may vary)
You made it! It calls for a celebration.
Congratulations!