volcano

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Across
  1. 3. the thin top layer we live in is the _________
  2. 5. Pangaea split into these and islands
  3. 6. when a tectonic plate cracks upward, it _______
  4. 8. the crust is a puzzle of these
  5. 12. middle earth is called the ________
  6. 13. what the ancient ‘supercontinent’ is called
  7. 14. when earth wears away due to weather or rivers it is ___
  8. 18. magma when it explodes is called this
  9. 19. heated silica in sand is turned into this
Down
  1. 1. the scale used to measure earthquakes
  2. 2. rocks we eat in pills
  3. 4. people live on these smaller ‘continents’
  4. 7. When tectonic plates rub it causes an _________
  5. 9. spews out and makes an island
  6. 10. liquified magma is _______ rock
  7. 11. a type of soil we make into pottery
  8. 15. plants and fossils pressed down in the earth become thick __
  9. 16. lava under the crust is called this
  10. 17. when a tectonic plate bends into a mountain, it ______