Plate Tectonics
Across
- 1. A large supercontinent which formed millions of years ago
- 6. Violent shaking of the Earth which is caused by rocks breaking under stress
- 8. A fracture in rock where the tectonic plates have moved
- 9. The layer of molten rock located beneath the Earth's crust
- 11. A mountain with a vent where magma have or are erupted
- 13. A thin part of the crust that which lays under the oceans
- 15. A series of underwater mountains that form as a result of tectonic plates moving apart and allowing magma to rise to the surface
- 18. The boundary between two tectonic plates that are moving together
- 19. The current or flow of air or liquid that results from the transfer of thermal energy through convection
- 22. A theory that the middle of the ocean is spreading apart, forming new oceanic crust
- 23. The continual movement of the continents over time
- 26. The transfer of the thermal energy by the movement of molecules in air or liquid from one place to another
- 29. The boundary between two tectonic plates that are moving apart
- 30. Lithosphere; the outer layer of the Earth
Down
- 2. the geologist which first thought of the thoery of continental drift
- 3. A deep valley that forms as a result of tectonic plates moving apart on land
- 4. A series of large waves that result from an underwater earthquake
- 5. The movement of one tectonic plate under another tectonic plate
- 7. Underwater cliffs between the beach and the ocean
- 10. A large leyer of solid rock that covers part of the surface of the Earth; Movement of tectonic plates can cause earthquakes
- 12. A deep ditch under the ocean along a tectonic plate boundary
- 14. A place where two tectonic plates colided which causes a large land mass to elevate
- 16. Core The layer of the Earth which is responsible for the magnectic field
- 17. The boundary between two tectonic plates that are sliding past each other
- 20. Molten rocks which appear on the surface of the Earth
- 21. Semiliquid rock found beneath the Earth's surface
- 24. A place in the mantle that melts rocks into magma
- 25. The theory that the surface of the Earth is divided into a series of plates that are continually moving
- 27. Something that acts like a liquid but is a solid
- 28. The centre of the Earth