Agenda for 3/21/17
• Go over Waves Review worksheet
• Electromagnetic Spectrum Jigsaw Activity
• No HW
Electromagnetic Spectrum Jigsaw
• Your group is going to become an expert in an area of
the electromagnetic spectrum. Some of the things to
include in your poster:
• What are the characteristics of this type of radiation
(wavelength, frequency, key facts)?
• Where is this type of radiation located on the
electromagnetic spectrum in relation to other kinds of
radiation?
• How is it used or found in our everyday lives or in
certain industries? Identify and explain at least two
uses.
• Use textbook and NASA packet to find info
Agenda for 3/22/17
• Poster Presentations
• EMS notes
• No HW
Electromagnetic Energy
Electromagnetic Waves (radiation):
Are transverse waves produced by the motion of
electrically charged particles.
Electromagnetic Spectrum:
Total Range of all electromagnetic waves.
Electromagnetic Spectrum
Electromagnetic Spectrum
•Gamma Rays –
strongest waves
•X-Rays – used to view
bones and teeth.
•http://www.youtube.co
m/watch?v=0oy0fYeV76
4
•Ultraviolet (UV) –
tanning and sunburn.
•Visible Light – allows us
to see color
•http://www.youtube.co
m/watch?v=kfS5Qn0wn
2o
•Infrared – radar
systems, remote
controls
•Microwave – used for
aircraft navigation.
•Radio waves
FM – high frequency
radio and TV.
AM – low frequency
radio.
•Long Radio waves –
used by astronauts to
communicate to Earth
from the moon
Electromagnetic Energy
• Usually the shorter the wavelength the more
dangerous the electromagnetic wave (higher
frequency). Which portion of the spectrum is
most dangerous?
• Gamma Rays.
Visible Spectrum
Definition:
The ONLY portion of
the spectrum that can
be seen by the naked
eye.
•ROY G BIV gives us
the order from the
longest wavelength (RED) to the shortest
wavelength - (VIOLET).
•White light (sunlight)
is a mixture of ALL
visible light.
5 Question Mini Quiz
• 1) What part of the EMS has the most
dangerous radiation?
• 2) What part of the EMS has the longest
waves?
• 3) What is the only part of the spectrum we
can see?
• 4) What part of the spectrum is used to view
bones and teeth?
• 5) What part of the spectrum is used in
remote controls?
• 1) What part of the EMS has the most
dangerous radiation? GAMMA
• 2) What part of the EMS has the longest
waves? RADIO
• 3) What is the only part of the spectrum we
can see? VISIBLE LIGHT
• 4) What part of the spectrum is used to view
bones and teeth? X-RAY
• 5) What part of the spectrum is used in remote
controls? INFRARED
Agenda for 3/23/17
• Make your own spectroscope!
• No HW
Agenda for 3/30/17
• Waves Town worksheet
• HW – Electromagnetic Spectrum Review Sheet