Energy and Technology Crossword

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