Across
- 5. A supercontinent that existed 200 million years ago
- 6. Another word for "cracks"
- 8. These form when plates collide
- 11. The boundary between the Pacific and North American Plate in California
- 13. When one plate slides beneath another
- 16. The term given to the plates carrying our continents slowly around the earth
- 19. This measures the force of an earthquake
- 20. This term is given to a volcano that has not erupted for a long time but could erupt again
- 21. This is an example of a volcanic island
- 23. An area in Antrim, formed from volcanic activity
- 26. The centre of the earth
- 27. When plates separate, __________ mountains can form
- 28. Hot molten rock found deep within the earth's crust
- 29. What magma travels through
- 31. The area on the surface of the earth where an earthquake is most strongly felt
Down
- 1. __________ currents cause the plates of the earth to move
- 2. Where lava pours from
- 3. Where a major earthquake struck in 1906
- 4. This is used for identifying tremors in the earth's crust
- 7. Mountains that have formed on the ocean floor because of volcanic activity
- 9. When magma cools on the surface it is given this name
- 10. ________ shaped mountains form from the build up of lava and ash
- 12. The world's youngest type of fold mountains
- 14. These mountains formed during an era 400 million years ago
- 15. A giant tidal wave that happens because of an earthquake
- 17. The crust of the earth is broken in to a number of...
- 18. The term given to a volcano that erupts regularly
- 22. Before entering the vent, the magma comes from the ________ _________
- 24. Another word for small tremors
- 25. The plate Ireland sits on
- 28. The temperature of the ________ is about 4000 degrees celcius
- 30. The place within the crust where an earthquake occurs