Across
- 7. The rigid outer layer of Earth, consisting of the crust and upper mantle.
- 8. The scientific study of the Earth, its materials, the processes that act on them, and its history
- 10. The process by which sediments are dropped or settle out of transporting agents.
- 12. A crack in Earth’s crust where movement occurs.
- 13. A sudden shaking of the ground caused by movement along a fault.
- 14. Molten rock beneath Earth’s surface.
- 16. Rock changed by heat, pressure, or chemically active fluids without melting.
- 17. A naturally occurring, inorganic solid with a definite chemical composition and crystal structure.
- 19. The breakdown of rocks into smaller pieces by physical or chemical processes.
- 20. An opening in Earth’s crust through which lava, ash, and gases erupt.
Down
- 1. Alfred Wegener’s idea that continents slowly move across Earth’s surface.
- 2. The semi-fluid layer of the mantle beneath the lithosphere that allows tectonic plates to move.
- 3. Rock formed from the cooling and solidification of molten magma or lava.
- 4. Tectonics – The theory that Earth’s lithosphere is broken into moving plates.
- 5. The movement of weathered sediments by wind, water, ice, or gravity.
- 6. The preserved remains or traces of ancient life.
- 9. A timeline that divides Earth’s history into eons, eras, periods, and epochs.
- 11. Rock formed from the accumulation and compaction of sediments.
- 15. Molten rock that reaches Earth’s surface.
- 18. A solid mixture of minerals or mineral-like materials.