Plate tectonics
Across
- 1. waves which can travel through solids, liquids or gases
- 3. father of plate tectonics.
- 5. vibrations or small earthquake felt after the major earthquake
- 6. device used to detect P-waves and S-waves
- 7. action of plate boundaries where new crust is formed
- 8. fracture in the crust where the movement has occurred.
- 9. hypothesis that all the continents fit together as one mass, which began to drift apart 200 million years ago.
- 13. slowest type of earthquake
- 14. produced by the movement of continental or oceanic plates
- 16. action of plate boundaries where they grind past each other
Down
- 1. theory describes the formation, movement and interactions of plates
- 2. staring point of earthquake below earth's surface
- 4. they are created when the ground moves downhill from the vibrations
- 9. action of plate boundaries where crust is destroyed
- 10. when soil becomes saturated with water and cannot support buildings
- 11. vibrations or small earthquake felt before the major earthquake
- 12. volcanic mudflow of water and ash
- 14. the point directly above the focus on the earth's surface
- 15. type of fault where the plates are moving past one another
- 16. caused when the ocean floor is moved upward, creating large waves