Stem Crossword Puzzle

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Across
  1. 3. elements/atoms
  2. 5. empty space
  3. 7. 5 senses
  4. 8. long time to develop
  5. 10. electrons
  6. 11. an assumption or concession made for the sake of argument
Down
  1. 1. has been proven to be true
  2. 2. Why? how?
  3. 4. to make a guess about the graph in between the points we have already connected
  4. 6. to make a guess about the graph out side the points
  5. 9. agrees with ruth
  6. 12. what may happen next