Energy and Technology Crossword

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