Across
- 4. A permanent change in shape without breaking; how rocks "flow" under pressure.
- 7. formed from the accumulation of dust, sand, and organic debris.
- 10. A solid iron-nickel ball at the very center of the planet.
- 12. The thick, buoyant part of the crust that forms the landmasses.
- 13. The Earth's thin, rocky "skin."
Down
- 1. The "soft" layer of the mantle on which tectonic plates float.
- 2. The thickest layer, located between the core and the crust.
- 3. The circular motion of heating and cooling that drives plate tectonics.
- 5. The only entirely liquid layer; responsible for Earth's magnetic field.
- 6. An underwater mountain range where new seafloor is created.
- 8. born from fire; formed by the cooling of magma or lava.
- 9. The thin, dense part of the crust found beneath the sea.
- 11. The rigid outer shell including the crust and the uppermost mantle.