Energy and Technology Crossword

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