Across
- 3. forms where Earth's tectonic plates move apart
- 6. Two plates are pushing into each other.
- 8. The component of the Earth's surface comprising the rock
- 9. The fourth layer inside the Earth
- 10. made of solid rocks and minerals.
- 12. a supercontinent that incorporated almost all the landmasses on Earth.
- 14. pieces of Earth's crust and uppermost mantle,
- 15. The region below the lithosphere
Down
- 1. Places where plates slide sideways past each other.
- 2. plate tectonics of the edge of one crustal plate descending below the edge of another.
- 4. One of the earliest ways geologists thought continents moved over time.
- 5. mostly composed of liquid iron and nickel.
- 7. When two tectonic plates move away from each other.
- 11. The layer of the Earth between the crust and the core.
- 13. degree of consistency measured by the quantity of mass per unit volume.