Across
- 1. Hot molten rock that can rise at plate boundaries
- 3. Naturally occurring vibration waves from earthquakes
- 7. A scale used to measure the size of earthquakes
- 8. What is the name of the centre of the earth
- 10. The layer of gases surrounding Earth
- 12. What is the part of the earth we see
- 13. How many pieces of evidence for continental drift were originally discovered
- 17. What moves tectonic plates
- 18. Who originally made the theory of Tectonic Plates
- 19. What type of volcano is Mount Fuji
- 20. A scientist who studies rocks
Down
- 2. What layer of the earth is referred to as plastic
- 4. The evidence of Tectonic plates that Harry Hess discovered
- 5. The process where one tectonic plate sinks beneath another
- 6. The process by which earths layers separate
- 9. Sudden shaking caused by plate movement
- 11. A bowl-shaped volcanic depression
- 14. The supercontinent that existed millions of years ago
- 15. What is the thickest layer of the earth
- 16. Large moving sections of Earth’s crust