Electromagnetic
Spectrum Web Quest
Directions: Use the following web sites to answer the
questions below. Make sure your
responses are in complete sentences.
1)
Use the following web site http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html
to choose a specific wavelength of visible light, a radio wave, and an x-ray to
fill in the chart below. Remember your units!
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Type of radiation |
Wavelength |
Frequency |
Wave Speed |
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Use
http://imagine.gsfc.nasa.gov/docs/science/know_l1/emspectrum.html
for questions 2-5
2)
What
do all types of electromagnetic radiation have in common?
3)
What
is different about the different parts of the electromagnetic spectrum?
4)
Which
type of radiation has the most energy? How or where is this radiation formed?
5)
Raphael
refers to a wave by noting its wavelength.
Lucinda refers to a wave by noting its frequency. Which student is correct and why?
Take
the tour at http://imagers.gsfc.nasa.gov/ems/waves3.html
and answer questions 6-11
6)
How
does the energy of the different waves of the spectrum vary with frequency?
With wavelength?
7)
What
is the frequency range of UV light? Of
Infrared light?
8)
If
you are use night-vision goggles, what part of the spectrum are you detecting?
9)
Rich
says that light is the same thing as electromagnetic radiation. Do you agree or disagree with Rich? Explain your response.
10)
Do
all animals see the same frequencies of “visible” light as humans do? Do all
animals hear the same frequencies of sound as humans do?
11)
Why
do astronomers use frequencies other than the visible ones when they are
investigating the universe?
Use
http://www.ntia.doc.gov/osmhome/allochrt.pdf
to answer questions 12-14
12)
What
frequency range does the
13)
What
frequency does television channel 7 broadcast at?
14)
How
large a band of frequencies does each television broadcasting channel get?
Use
http://www.qrg.northwestern.edu/projects/vss/docs/thermal/3-what-makes-em-radiation.html
to answer the following (the general site http://www.qrg.northwestern.edu/projects/vss/docs/Communications/2-more-about-radio-waves.html
can also be used on other questions)
15)
Why
do materials absorb some frequencies of electromagnetic radiation and not
others?
For
Extra Credit, answer questions 16-17:
16)
Why
do waves with frequencies higher than visible light hurt us while those with lower
frequencies do not affect us?
17)
Light
is sometimes described as a wave and sometimes as a particle. Give evidence to
support the wave nature of light.