Vacabulary

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Across
  1. 2. a test to find out or prove.
  2. 5. careful study of a subject or problem.
  3. 6. to show to be true by backing up with facts.
  4. 8. an original device, system, or process.
  5. 10. strength
Down
  1. 1. a small, useful machine or device.
  2. 3. to get better
  3. 4. well known from being seen often.
  4. 7. powered by electricity, a form of energy caused by the motion of electrons and protons.
  5. 9. things people use to help them do a job.