Waves in Motion (Physics) for Grade 7 Students

1. WHAT IS
A WAVE?

2. WHAT ARE THE
TYPES OF WAVE
ACCDG TO
PROPAGATION?

3. WHAT IS A
TRANSVERSE
WAVE?

4. WHAT IS A
LONGITUDINAL
WAVE?

5. LET’S IDENTIFY THE
PARTS OF THE
WAVES

6. PARTS OF TRANSVERSE WAVE
CRES
T
TROUG
H
EQUILIBRIUM
WAVELENGTH
WAVELENGTH
AMPLITUDE

7. PARTS OF LONGITUDINAL WAVE
C O M P R E S S I O
N
R A R E F A C T I O
N

8. TYPES OF WAVES
ACCORDING TO
MEDIUM
Mr. Aaron F. San Jose
Science & Technology 7

9. TWO CLASSIFICATION OF WAVES
•According to Propagation
-Transverse Waves
-Longitudinal Waves
•According to Medium
-Mechanical Waves
-Electromagnetic Waves

10. MECHANICAL WAVES
•A mechanical wave is created when a source of
energy causes a vibration to travel through a
medium.
•(ex. Water waves, sound waves, seismic waves)

11. RIPPLE
Is there a
medium
present?
Where do the
waves travel
through?

12. SOUND WAVES
Where do
sound waves
travel through?

13. SEISMIC WAVES
Where do
Seismic waves
travel through?

14. IN SHORT…
MECHANICAL
WAVES CAN
TRAVEL THROUGH
ANY MEDIUM
EXCEPT IN SPACE
OR VACCUUM

15. ELECTROMAGNETIC WAVES
•A type of wave that can travel through space
or vacuum
•(ex. Radio wave, Microwave, Infrared, Visible
Light, Ultraviolet light, X-ray, Gamma ray )

17. IMPORTANCE OF
EACH EM WAVE

18. RADIO WAVE
•Your radio captures
radio waves emitted
by radio stations,
bringing your favorite
tunes. Radio waves
are also emitted by
stars and gases in
space.

19. MICRO WAVE
•Microwave radiation
will cook your
popcorn in just a
few minutes, but is
also used by
astronomers to learn
about the structure
of nearby galaxies.

20. INFRARED
•Night vision goggles
pick up the infrared
light emitted by our
skin and objects with
heat. In space,
infrared light helps
us map the dust
between stars.

21. VISIBLE LIGHT
•Our eyes detect
visible light. Fireflies,
light bulbs, and stars
all emit visible light.

22. ULTRAVIOLET LIGHT
•Ultraviolet radiation
is emitted by the
Sun and are the
reason skin tans and
burns. "Hot" objects
in space emit UV
radiation as well.

23. X-RAY
•A dentist uses X-
rays to image your
teeth, a radio
technologist scans
your bones, and
airport security uses
them to see through
your bag.

24. GAMMA RAY
•Doctors use
gamma-ray to kill
cancer cells. The
biggest gamma-ray
generator of all is
the Universe.

25. ACTIVITY:
•FILL-IN EACH SHAPE OF
THE ORGANIZATIONAL
CHART WITH
NECESSARY DATA

26. EXAMPLES EXAMPLES EXAMPLES
TYPES
TYPES
TYPES
TYPES
TYPES
TYPES
TYPES