Lessons 7 & 8 IQWST Readings

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Across
  1. 3. some people call the internet the _________.
  2. 6. the older technology that optical fiber is replacing
  3. 7. this is burned to produce much of America's electricity
  4. 9. good solar cells absorb a lot of light and ______ little
  5. 10. produce electricity using light energy from the sun
  6. 13. the way in which light moves through air and optical fibers
  7. 15. a technology used to heat air to turn a turbine for electricity
Down
  1. 1. the light principle by which optical fibers work
  2. 2. used by the solar power tower to reflect sunlight
  3. 4. solar water heaters can be placed on _______ to absorb sunlight in sunny areas
  4. 5. optical fibers have made this safer
  5. 8. tiny strand of glass used in communication
  6. 11. a machine that generates electricity
  7. 12. One reason that optical fibers are replacing wires is because they are __________.
  8. 14. light can be scattered (or reflected), transmitted, and ___________.