Unit 4 Key Wo

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Across
  1. 3. Most of the time
  2. 5. Helped by
  3. 6. An object that is used for work or a hobby
  4. 9. You give it away for free
  5. 10. Experts in science
  6. 12. Unproven idea that explains something
Down
  1. 1. A hard hat that protects your head
  2. 2. A natural activity or behavior
  3. 4. A way of doing something
  4. 5. A vehicle with two wheels and no motor
  5. 7. People who work for no money
  6. 8. A place where people study science
  7. 11. Something that shows the truth