chapter 1

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Across
  1. 3. representation of something in the natural world
  2. 5. any factor that can change in an experiment
  3. 6. information gathered by observation or an experiment that can be used in calculating
  4. 7. application of science and mathematics to solve problems
  5. 10. evidence gained from observation
  6. 11. well-supported explanation
  7. 12. testable idea that leads to investigation
Down
  1. 1. use of tools, machines, materials, and processes to meet human needs
  2. 2. obtain information by using senses
  3. 4. basic principle of nature
  4. 8. organized procedure to study something
  5. 9. test model