Sort 29 Parts 1 & 2

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Across
  1. 2. a person's own signature
  2. 4. Medicine that kills bacteria
  3. 6. measures air pressure
  4. 11. Having artificial body parts
  5. 13. black form of carbon used in lead pencils
  6. 16. An instrument that measures distance traveled by a vehicle
  7. 17. study of the earth's surface
  8. 19. instrument for measuring speed
  9. 20. measures temperature
  10. 21. - operating by itself
Down
  1. 1. mapmaker
  2. 3. The study of life
  3. 4. story of a person's life written by that person
  4. 5. A written account of another person's life
  5. 7. - the part of Earth where life exists
  6. 8. Able to be broken down naturally
  7. 9. a device used to control the temperature
  8. 10. car
  9. 12. Study of the earth's features - like rocks and minerals and other features
  10. 14. Energy derived from the heat in the interior of the earth
  11. 15. A hollow rock inside which mineral crystals have grown.
  12. 18. mathematics dealing with lines, angles, surfaces, and solids