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