Across
- 4. The location directly above the earthquake’s focus.
- 7. The molten rock underneath the earth’s crust.
- 8. A series of huge ocean waves caused by a rapid disturbance of sea water.
- 9. When two plate boundaries move towards each other and collide.
- 12. The fastest seismic wave.
- 15. Consists of all the minerals of the Earth’s crust.
- 16. Molten rock erupted from volcanic structures.
- 18. A type of rock formed from the solidification of molten rock.
- 21. An upper part of the mantle; what the Earth’s crust floats on.
Down
- 1. A boundary where new crust is created.
- 2. An instrument used to measure the motion of the ground during an earthquake.
- 3. The point within the Earth where earthquakes begin.
- 5. A supercontinent where all current continents fit together.
- 6. A measure of the strength of earthquakes.
- 10. Core The innermost layer of the Earth; composed of a solid ball of iron.
- 11. The secondary wave; only able to pass through solids.
- 13. A type of rock from the changes of other types of rock via changing environments.
- 14. The movement of the Earth mantle which moves the plates.
- 17. Plate Gigantic solid pieces of crust that make up Earth’s outermost layer.
- 19. Core A liquid composed of nickel and iron. It is always spinning.
- 20. The cracks in the Earth’s crust where movement occurs.