Tectonics

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Across
  1. 5. centre of the Earth.
  2. 7. / ……………….. plate margins move alongside each other either in the same or opposite directions.
  3. 8. pushed apart.
  4. 10. type of volcano formed at divergent plate margins.
  5. 11. name of a scale used to measure earthquakes.
  6. 12. go to the bottom of a liquid.
  7. 13. of the Earth's surface caused by motion of tectonic plates; diverging, converging or moving alongside
  8. 14. /Mountains which erupt occurring when plates converge or diverge.
  9. 15. together.
  10. 16. the heavier oceanic crust is pushed below the lighter continental crust.
  11. 18. plates are……………………..than continental plates.
  12. 21. rock that oceanic plates are made of, which is heavier than granite.
  13. 22. below the epicenter of an earthquake
  14. 23. continental plate is largely ………………………………. the sea.
  15. 24. a volcano is not extinct but not erupting.
  16. 25. layer around the core of molten magma.
  17. 26. strength of an earthquake.
  18. 27. two transform plate boundaries meet.
  19. 28. ocean waves caused by under-sea earthquakes or volcanic eruptions.
Down
  1. 1. oceanic plate is for the most part ………………………the sea.
  2. 2. surface of the Earth.
  3. 3. word for margins.
  4. 4. rock that continental plates are made of.
  5. 6. grey powder created when something is burnt which spews out of volcanoes when they erupt.
  6. 9. margins(2 words)/Where two tectonic plates meet.
  7. 12. waves (2 words) /Waves in the surface of the Earth caused by plate movement.
  8. 13. plate(2 words)/What the crust is made of.
  9. 15. moves through the mantle due to ……………………… currents.
  10. 17. rock which flows from erupting volcanoes.
  11. 19. the top of a volcano explodes off.
  12. 20. /A type of volcano occurring on convergent plate boundaries where there is subduction.
  13. 22. Mountains caused by converging plates margins where the continental crust is crushed and folded.
  14. 25. rock, rock that is so hot that it has melted.