Across
- 2. Volcanic rock that is most commonly associated with divergent plate margins
- 6. Type of fault associated with conservative and divergent plate margins
- 8. Large landmass comprising the continents of the southern hemisphere
- 9. Formed by the collision of India and Eurasia
- 10. These values are high over mid ocean ridges and low over ocean trenches
- 13. Layer beneath the Earth's crust
- 16. Volcanic rock that is most commonly associated with convergent oceanic-continental plate margins
- 17. Type of force acting at a divergent plate margin
- 19. Type of plate margin where two plates are sliding past each other
- 21. Canadian scientist who linked all the elements of plate tectonics into a cycle
- 24. Type of force acting at a conservative plate margin
- 25. flat part of the ocean basins with an average depth of 4 km
- 27. Type of plate margin where two plates are moving towards each other
- 30. Type of force acting at a convergent plate margin
- 32. Layer of the Earth indicated by the geotherm of 1300 degrees centigrade. This layer is hot, weak and plastic.
- 35. Boundary between the North American and Pacific Plate in California
- 37. Scientist who first proposed the theory of sea floor spreading
- 38. Type of plate margin where two plates are moving away from each other
- 39. Region of earthquakes found increasing in depth al a convergent oceanic-continental plate margin
- 40. Process that occurs at continental-continental plate margins and forms rocks such as slate and schist
Down
- 1. Feature formed at a convergent continental-continental plate margin
- 3. German meteorologist who was right all along so to speak!
- 4. Where the oceanic lithosphere is pulled back down into the asthenosphere due to slab pull
- 5. Process now thought to be responsible for oceanic lithosphere being subducted back into the asthenosphere
- 7. Feature formed at a convergent oceanic-oceanicplate margin such as Caribbean Islands
- 11. Deepest part of the oceans
- 12. Discovered on the sea floor by Frederick Vine and Drummond Matthews
- 14. Large landmasses comprising the continents of the northern hemisphere
- 15. Formed by submarine eruptions of basalt
- 18. Lake dwelling reptile useful as supporting evidence for continental drift.
- 20. Feature found along the center of mid ocean ridges
- 21. A low angle fault associated with convergent plate margins
- 22. Theory first proposed by Alfred Wegener
- 23. Method used to establish the age of igneous and metamorphic rocks
- 26. submarine mountain chain
- 28. Outer layer of the Earth comprising the crust and upper mantle which is solid and rigid
- 29. Name of the most recent supercontinent
- 31. Process by which oceans grow progressively larger
- 33. Considered for many years to be the main driving force of plate tectonics, but recently called into question
- 34. Rock type formed at depth by the melting of continental lithosphere at convergent continental-continental plate margins
- 36. Process by which andesite can be generated from Ihe mantle at a convergent oceanic-oceanic plate margin