science revision

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Across
  1. 3. What is the process called where plants make their own food?
  2. 7. Which state of matter has particles that are tightly packed in a regular arrangement?
  3. 10. Which body system breaks down the food you eat?
  4. 13. What process changes a liquid into a gas?
  5. 14. What are the building blocks of all living organisms?
  6. 15. Through Which state of matter does sound travel in the slowest?
Down
  1. 1. What is the control centre of a cell called?
  2. 2. What is the unit used to measure force?
  3. 4. What resource is the primary source of light and heat for the Earth?
  4. 5. What is the term for a push or pull?
  5. 6. What term describes an organism made of many cells?
  6. 8. Which state of matter has a fixed volume but no fixed shape?
  7. 9. What organ pumps blood around the body?
  8. 11. Which force pulls objects towards the centre of the Earth?
  9. 12. What type of energy is stored in a stretched rubber band?