Electromagnetic Spectrum

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Electromagnetic Spectrum

• Identify and explain how different parts of the
  electromagnetic spectrum are used

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Electromagnetic Spectrum
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Electromagnetic Spectrum

• Here are the different types of radiation in the
  EM spectrum, in order from lowest energy to
  highest

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Radio waves

• have the longest wavelength in the
  electromagnetic spectrum.
• These waves carry the news, ball games, and music
  you listen to on the radio.
• They also carry signals to television sets and
  cellular phones.

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Microwaves

• Have shorter wavelengths than radio waves, which
  heat the food we eat.
• They are also used for radar images, like the
  Doppler radar used in weather forecasts.

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infrared waves

• with long wavelengths and short wavelengths.
• Infrared waves with long wavelengths can be
  detected as heat.
• Heat Lamps give off these long infrared waves.
• We call these thermal infrared or far infrared
  waves.
• The sun gives off infrared waves with shorter
  wavelengths.

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Visible light waves

• are the only electromagnetic waves we can see.
• We see these waves as the colors of the rainbow.
• Each color has a different wavelength.
• Red has the longest wavelength and violet has the
  shortest wavelength.
• These waves combine to make white light.

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Ultraviolet waves

• have wavelengths shorter than visible light
  waves.
• These waves are invisible to the human eye, but
  some insects can see them.
• Of the sun's light, the ultraviolet waves are
  responsible for causing our sunburns.

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X-Rays

• As wavelengths get smaller, the waves have more
  energy.
• X-Rays have smaller wavelengths and therefore
  more energy than the ultraviolet waves.
• X-Rays are so powerful that they pass easily
  through the skin allowing doctors to look at our
  bones.

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Gamma Rays

• have the smallest wavelength and the most energy
  of the waves in the electromagnetic spectrum.
• These waves are generated by radioactive atoms
  and in nuclear explosions.
• Gamma rays can kill living cells, but doctors can
  use gamma rays to kill diseased cells.

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Cosmic Rays

• are high energy charged particles, originating in
  outer space, that travel at nearly the speed of
  light and strike the Earth from all directions.
• Aurora Borealis Northern Lights Auroras are
  associated with the solar wind, a flow of ions
  continuously flowing outward from the Sun.

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1Definition and Picture

• Define your part of the electromagnetic spectrum
  in your own words.
• Draw a picture or illustration that best matches
  your word in the middle

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2 Wavelength and Frequency
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3 Describe 3 Uses

• Describe the ways we use this part of the
  electromagnetic spectrum in our lives

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4 Draw the 3 uses

• Draw the 3 ways we use the electromagnetic
  spectrum in our lives
• Identify the most recognizable uses for us to
  remember.

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Electromagnetic Project 1

• Explain to students that groups must work
  together to research the following information
  about their form of radiation
• 1. What are the characteristics of this type of
  radiation (wavelength, frequency, key facts)?

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Electromagnetic Project 2

• 2. Where is this type of radiation located on the
  electromagnetic spectrum in relation to other
  kinds of radiation? What properties of the wave
  define why it is found within this area of the
  spectrum?

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Electromagnetic Project 3

• 3. How is it used or found in our everyday lives
  or in certain industries?
• Identify and explain at least three uses.

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Electromagnetic Project 4

• 4. How is it used to explore outer space.
• Give at least 3 examples of where and how it
  explores other planets, stars, galaxies, or
  worlds.