Matter Vocabulary Review

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Across
  1. 8. around you that takes up space is called matter. It
  2. 9. gets smaller (contracts) because it's cooled. The cold
  3. 10. contraction is the opposite of thermal expansion. It's when
  4. 11. is how tightly packed the particles in an object are. If
  5. 13. Volume is how much space something takes up. If you pour water
  6. 15. is a measure of how much matter is in something. It's not the
  7. 16. the particles down and they take up less space.
  8. 18. up more space.
  9. 19. a cup, the amount of space the water occupies is its volume.
Down
  1. 1. They're so tiny, you can't see them with just your eyes!
  2. 2. like air.
  3. 3. it's less dense.
  4. 4. it's heated. The heat makes the particles move faster and
  5. 5. of
  6. 6. things you can see, like tables and cats, and things you
  7. 7. are close together, the object is dense. If they're spread
  8. 10. phases of matter are the different forms matter can take -
  9. 12. liquids, and gases. They each behave differently based on
  10. 14. their particles move.
  11. 16. as weight, which can change if you go somewhere like the
  12. 17. Particles are the super small bits that make up everything in the
  13. 20. expansion happens when something gets bigger (expands)