Energy and Technology Crossword

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