6th Grade science

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Across
  1. 6. upper, solid layer of Earth
  2. 7. a measurement of force
  3. 8. plates spread apart
  4. 9. study of space
  5. 13. testing a hypothesis
  6. 14. heat transfer through liquid or gas
  7. 17. energy producing object made of hydrogen and helium
  8. 18. heat from below the surface
  9. 19. splitting or combining of atoms
Down
  1. 1. moving energy
  2. 2. inner layer of Earth
  3. 3. a body revolving a star
  4. 4. magma escaping Earth
  5. 5. an educated guess
  6. 10. dying star, biggest explosion known in universe
  7. 11. energy due to position or condition
  8. 12. how far it travels in a certain amount of time
  9. 14. heat transfer through touch
  10. 15. where stars form
  11. 16. plates come together