Across
- 8. Type of boundary where two plates collide
- 10. Type of boundary where new crust is generated as plates move apart
- 11. Molten rock found beneath the Earth's surface
- 13. boundaries
- 14. Deepest parts of the ocean, often found at
- 15. Type of crust that is thinner and denser, found under oceans
- 17. The layer of Earth between the crust and the outer core
- 19. Vibration of the Earth due to the release of energy
- 22. Scientist who proposed the theory of continental drift
- 23. Piece of evidence for divergent plates (2words)
Down
- 1. Lower part of the mantle
- 2. The process where oceanic crust plunges beneath another plate
- 3. A vent or mountain from which lava, ash, and cinders are expelled
- 4. Less dense plate
- 5. The age of the rock furthest from a ridge
- 6. Type of boundary where two plates slide past each other horizontally
- 7. Rigid, outermost layer of the Earth, composed of the crust and upper mantle
- 9. The theory that the lithosphere is divided into plates that move
- 12. Plates moving apart
- 16. Movement of matter due to differences in density, believed to drive plate motion
- 18. Break in a rock along which movement occurs
- 20. Scientist who proposed tectonic theory
- 21. Supercontinent that existed 245 million years ago