Energy and Technology Crossword

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Across
  1. 3. making water, air, or land unclean and unhealthy.
  2. 4. the electronic ________________ sends information from telephones, TVs, and computers.
  3. 7. What the electronic superhighway sends
  4. 9. What was the major source of energy in the nineteenth century?
  5. 11. what the photoelectric cell produces
  6. 13. tool that provides high-energy beams of light.
Down
  1. 1. The major source of energy in the twentieth century
  2. 2. the land, sea and air of our world.
  3. 5. the ___________________ cell can produce electricity from light.
  4. 6. without energy, this cannot be done.
  5. 8. technology has improved it with surgery and lasers.
  6. 10. energy makes _______________ work.
  7. 12. They have designed new cars and invented medical machines.