pressure

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Across
  1. 2. / what was used to heat water in?
  2. 4. / another ingredient we used in our rocket?
  3. 5. / what happened to the can when it was tipped into the bowl of water?
  4. 9. / what was pushed into the jar?
  5. 12. / what was put in the egg to help it get pushed into the bottle?
  6. 14. / what was left inside the can once the water boiled?
  7. 15. / another word for what happens to the vapour when it cools?
  8. 18. / was there more or less pressure in the jar?
Down
  1. 1. / an ingredient that we used in our rocket?
  2. 3. / what did our two ingredients make when combined?
  3. 5. / what did we use to plug our bottle with?
  4. 6. /what is pushing on you all of the time?
  5. 7. / you are this when you wake up in the morning?
  6. 8. / what happens to the vapour in the can when it was cooled?
  7. 10. / what did we use to power our cars?
  8. 11. / what happened to the air in the jar when it was heated?
  9. 13. / what was used to alter the pressure in the jar?
  10. 16. / what did we propel into the air?
  11. 17. / what did we use to direct the force to propel our cars?