Chapter 10 Crossword

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Across
  1. 5. the process of continents breaking up, subsiding and allowing in the sea
  2. 6. spreading- it is the process of new crust forming at the ocean ridges and spreading outwards
  3. 7. tectonics- it is the theory that the Earth’s crust is cracked into many large pieces that move on the asthenosphere
  4. 8. it is a layer of ‘plastic’ semi-solid rock in the lower mantle
  5. 9. it is the crust that forms the ocean floor
  6. 14. it is the crust that forms the continents
  7. 18. waves- it is the shaking, wave-like movement of the ground in an earthquake
  8. 19. it is between the Earth's core and crust and is hot but not as hot as the core
  9. 22. boundary- it is where plates are colliding with each other
  10. 23. it is the centre of the Earth and is very hot
  11. 24. boundary- it is where plates are sliding parallel to each other but in opposite directions
  12. 25. it is when oceanic crust collides with continental crust, and the oceanic plate then sinks below the continental plate
  13. 27. it is a line determined by the intersection of a geological fault and the Earths surface
  14. 28. it is a biological community of interacting organisms and their physical environment
  15. 30. it is a huge wave in the ocean caused by an earthquake occurring on the seafloor
Down
  1. 1. it is the point on the Earth’s surface directly above the focus of an earthquake
  2. 2. isolated places away from plate boundaries where a lot of hot magma is being created
  3. 3. it is patterns of magnetism trapped in rocks on each side of plate boundaries
  4. 4. drift- it is the separating of continents by drifting across the oceans
  5. 7. it is a longitudinal seismic wave that travels fast through the Earth
  6. 10. it is an instrument that detects the seismic waves from an earthquake
  7. 11. it is molten rock below the Earth’s surface
  8. 12. it is the crust of the upper mantle of the Earth
  9. 13. it is a transverse seismic wave that travels through the Earth
  10. 15. it is a deep trench in the ocean floor that is much deeper than the rest of the ocean floor
  11. 16. it is the process of determining an approximate age for an artefact
  12. 17. it is determining the relative order of past events, without determining the age
  13. 20. it is a place where extremely hot material form inside the Earth erupts at the surface
  14. 21. it is the rapid movement of the ground, usually back and forth and up and down in a wave motion due to the movement of tectonic plates
  15. 26. boundary- it is where plates are moving apart from each other in opposite directions
  16. 29. it is molten rock that has erupted onto the Earth’s surface