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Integrated Coordinated Science for the 21st Century

+ Chapter 5
Long-Distance Communication
Planning for the Activity
Time Requirements:
  • one and a half class periods
Materials needed
For each group:
  • Battery 9-volt
  • Phone Plug, 1/8 w/Alligator Clips
  • Radio, Portable
  • Solar Cell w/Wire Leads, .5V, 400 ma.
  • Battery Holder for D-Cell Batt.
  • Battery D-Cell
  • Alligator Clip Leads
  • Unlined Index Cards
  • LED, 20mm Superbright
  • Resistor, 47 Ohm
  • Oscilloscope
  • Large Ringstand