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Electromagnetic-Spectrum-Worksheet

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Electromagnetic-Spectrum-Worksheet Powered By Docstoc
					Electromagnetic Radiation Worksheet               Period __         Name _________________

Check out the following website pertaining to the em spectrum:

http://school.discoveryeducation.com/lessonplans/interact/electromagneticspectrum.html

According to the information on the first slide, what three forms of em radiation does our body
detect on a daily basis?


Which one of the above forms of em radiation does our body detect as heat?


According to the next slide, where on the em spectrum do we find high energy em radiation?

        lo f / hi  end          OR               hi f / lo  end

Advance to the next slide and mouse over the spectrum so as to reveal the radio wave
information. What government agency regulates radio wave “traffic”?


Move on down to microwaves and mouse over the spectrum so as to reveal the microwave
information.

Besides a microwave oven, in what manner do you also use microwaves on a regular basis?


What is meant by the comment that the microwave portion of the em spectrum is “quiet”?


Move on down to IR waves and mouse over the spectrum so as to reveal the infrared wave
information.

What can snakes use to detect IR radiation?


Move on down to the visible region and mouse over the spectrum so as to reveal the visible wave
information.

What doe the G stand for in VIBGYOR?


Which color light has a lower frequency, red or blue?


Move on down to the UV region and mouse over the spectrum so as to reveal the UV information.

What insect is believed to able to “see” UV radiation?


In what manner is overexposure to UV radiation harmful?


Move on down to the X-ray region and mouse over the spectrum so as to reveal the UV
information.

Why is the apron they drape over you when you get an x-ray at the dentist’s office so heavy?
Move on down to the gamma region and mouse over the spectrum so as to reveal the Gamma Ray
information.

Although gamma radiation is very harmful to living cells, in what manner can gamma rays be
used to benefit the human body.


Next, head to the following website: http://www.webexhibits.org/colorart/bh.html

Who was the first person to figure out that white light actually consists of the complete spectrum
of colors?




Shown above is Newton’s sketch of his experiment. What was he able to demonstrate with the
second triangular prism?


In terms of how we perceive light, white is actually a mixture of all colors of light, while black is
the absence of all colors of light.

Now continue on to this website: http://spaceplace.nasa.gov/en/kids/misrsky/misr_sky.shtml

Read the material about why the sky is blue and why sunsets are red.

If longer waves were scattered more than shorter waves then what would be the color of the sky
during the day?


If all of the colors of light were scattered equally by our atmosphere then what would be the color
of the sky during the day?


If none of the colors of light were scattered by our atmosphere then what would by the color of the
sky during the day.


Finally, check out the following website:

http://micro.magnet.fsu.edu/primer/java/scienceopticsu/refraction/index.html

Switch the animation from white light to monochromatic light. Move the incident angle setting to
60o. Move the wavelength slider to its lowest value (red) and then to its highest value (violet).

Observe the value of the refracted angle as the wavelength slider is moved. Are all colors
refracted equally?

				
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