Across
- 8. The process in which one tectonic plate sinks beneath another.
- 9. A chart showing rock layers arranged from oldest to youngest.
- 10. Molten rock beneath Earth’s surface.
- 11. The theory that tectonic plates moved rapidly during a major catastrophic event.
- 12. The theory that continents were once joined together and later moved apart.
- 14. The idea that the solar system formed from a cloud of gas and dust.
Down
- 1. The rule that in undisturbed rock layers, the oldest layer is on the bottom.
- 2. A large section of Earth’s lithosphere that moves slowly over the mantle.
- 3. The process by which new ocean crust forms at mid-ocean ridges.
- 4. A layer of rock formed during the same time period.
- 5. Relating to a great flood.
- 6. A single large landmass made of most or all continents joined together.
- 7. The ancient supercontinent where all continents were once joined together.
- 13. The study of the movement and structure of Earth’s crust.