Lesson 10

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Across
  1. 4. A very smart person
  2. 5. A test that helps scientists answer their questions
  3. 7. Sometimes but not very often
Down
  1. 1. Something new that someone thinks up and creates
  2. 2. A place where scientists work and do experiments
  3. 3. A sound, a movement or another sign that sens a message
  4. 5. Run by electricity
  5. 6. A small machine or tool that is useful