Across
- 8. a geologic process in which tectonic plates large slabs of Earth's lithosphere—split apart from each other
- 10. a material's behavior under applied forces or loads
- 12. the solid metallic and hottest innermost layer of the planet
- 14. the layer of Earth's atmosphere situated between the stratosphere and the thermosphere
- 17. a liquid, primarily iron and nickel, layer of the Earth that surrounds the solid inner core
- 18. massive irregularly shaped slabs of solid rock comprising the earths lithosphere
- 20. a linear feature where two tectonic plates move apart
Down
- 1. Drift the movement of continents resulting from the motion of tectonic plates
- 2. the theory that the earth's lithosphere is composed of a mosaic of rigid plates that are in relative motion
- 3. a tectonic plate boundary where two or more lithospheric plates collide
- 4. the outermost solid layer of a planet or moon
- 5. a convergent plate boundary where one tectonic plate slides beneath another
- 6. thick, mostly solid silicate rock layer between Earth's crust and the outer core
- 7. a rock's chemical and mineral make-up
- 9. a partially molten ductile layer of the upper mantle beneath the lithosphere
- 11. a type of tectonic plate boundary where two plates slide horizontally past each other
- 13. a stress that squeezes or pushes rocks together often resulting in folding fracturing and the formation of mountain ranges
- 15. the rigid outer part of the earth consisting of the crust and upper mantle
- 16. a fracture in the Earth's crust where rocks on opposite sides have moved relative to each other
- 19. the innermost, dense, and very hot central region