Physical Science: Waves, Sound, and Light, Book O

Chapter 3: Electromagnetic Waves

Web Links


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Topic: Force Fields

Visit these sites to learn more about Earth's gravitational and magnetic force fields. Use the information to complete the activity in your book.

Earth's Magnetic Field

( http://liftoff.msfc.nasa.gov/academy/space/mag_field.html )
The Earth's Magnetic Field

( http://csep10.phys.utk.edu/astr161/lect/earth/magnetic.html )
Magnetic Field of the Earth

( http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/magearth.html )
NOVA - Magnetic Storm

( http://www.pbs.org/wgbh/nova/magnetic/ )
How Does Gravity Work?

( http://science.howstuffworks.com/question232.htm )
The Gravitational Field

( http://physics.bu.edu/~duffy/semester1/c17_field.html )

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Topic: Satellite Communications

Visit these sites to learn more about how satellites are used in around-the-world communications. Use the information to complete the activity in your book.

Communications Satellite

( http://collections.ic.gc.ca/satellites/english/function/communic/ )
Communications Satellite

( http://octopus.gma.org/surfing/satellites/sat_com.html )
How Satellites Work

( http://octopus.gma.org/surfing/satellites/index.html )
Location of GEO Communication Satellites

( http://www.adec.edu/satdb/sat-loc.html )

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Visit these sites for more information about wireless technology.

How Cell Phones Work

( http://www.howstuffworks.com/cell-phone.htm )
How Cordless Telephones Work

( http://www.howstuffworks.com/cordless-telephone.html )
How Restaurant Pagers Work

( http://www.howstuffworks.com/restaurant-pager1.htm )
The First Frequency Hopper Inventor

( http://wireless.oldcolo.com/course/hedy.htm )
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