Across
- 3. a solid inorganic substance of natural occurrence.
- 7. a network of interconnected fractures representing the surficial expression of a fault.
- 8. general equilibrium in the earth's crust maintained by a yielding flow of rock material beneath the surface under gravitative stress
- 10. the branch of geophysics concerned with the magnetism in rocks that was induced by the earth's magnetic field at the time of their formation.
- 11. an idealized cycle of processes undergone by rocks in the earth's crust, involving igneous intrusion, uplift, erosion, transportation, deposition as sedimentary rock, metamorphism, remelting, and further igneous intrusion.
- 12. the action or process of changing in shape or distorting, especially through the application of pressure.
- 14. places where plates slide sideways past each other.
- 15. a geologic structure that is formed by layers or beds of rock being bent or folded.
- 17. a seafloor mountain system formed by plate tectonics.
- 18. The Mohs scale of mineral hardness is a qualitative ordinal scale, from 1 to 10, characterizing scratch resistance of minerals through the ability of harder material to scratch softer material.
- 19. formed from pre-existing rocks or pieces of once-living organisms.
- 20. forms when hot, molten rock crystallizes and solidifies.
- 21. a fracture or zone of fractures between two blocks of rock.
- 23. a scientific theory that explains how major landforms are created as a result of Earth's subterranean movements.
- 24. A tectonic boundary where two plates are moving toward each other.
Down
- 1. the force acting on the unit area of a material.
- 2. the gradual movement of the continents across the earth's surface through geological tim
- 4. the rigid outer part of the earth, consisting of the crust and upper mantle.
- 5. a curved chain of volcanic islands located at a tectonic plate margin, typically with a deep ocean trench on the convex side.
- 6. occurs at divergent plate boundaries.
- 9. the deformation of a material from stress
- 13. a mountain or hill, typically conical, having a crater or vent through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust.
- 16. occurs when two tectonic plates move away from each other
- 18. started out as some other type of rock, but have been substantially changed from their original igneous, sedimentary, or earlier metamorphic form.
- 22. the upper layer of the earth's mantle, below the lithosphere