1. ELECTROMAGNETIC
WAVES &
SPEED OF LIGHT

2. Electromagnetic
Spectrum
•The classification of
electromagnetic
waves according to
frequency.

4. Electromagnetic
Waves
• Energy carrying waves
emitted by vibrating
charges often electrons
that is composed of
oscillating electric and
magnetic fields that
generate one another.

5. Electromagnetic
Waves
•Gamma rays
•X-ray
•Ultraviolet
•Visible light
(ROYGBV)

6. Electromagnetic
Waves
•Infrared
•Microwave
•Radiowave

7. Electromagnetic
Waves
•All EM waves move at
the same speed in a
vacuum and differ
from one another in
frequency and
wavelenght.

8. Electromagnetic
Waves
•longer wavelength=low
frequency=low energy
•Short wavelenght=high
frequency=high energy

9. Electromagnetic
Waves
• Gamma rays
• X-ray
• Ultraviolet
• Visible light (ROYGBV)
• Infrared
• Microwave
• Radiowave

10. Electromagnetic
Waves
•The speed of all the
waves in the EM
spectrum is
equivalent to the
speed of light 299 792
453 m/s.

15. Electromagnetic
Waves
•You know more
about the
electromagnetic
spectrum than you
may think.

17. 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.

20. Microwave
• 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.

22. 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.

24. Visible Light
•Our eyes detect
visible light.
Fireflies, light
bulbs, and stars all
emit visible light.

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

31. X-ray
• A dentist uses X-rays to
image your teeth, and
airport security uses
them to see through
your bag. Hot gases in
the Universe also emit
X-rays.

33. Gamma ray
•Doctors use gamma-
ray imaging to see
inside your body. The
biggest gamma-ray
generator of all is the
Universe

34. CREATE A
CONCEPT MAP
•Create a concept
map about EM
waves and speed of
light.

35. 3-2-1 EXIT CARD
3-What have you learned
today? Explain.
2-What life lessons have you
gained from the topic?
1-What MI Activity did you
learn the most from?