Across
- 4. energy that is transferred between systems or objects with different temperatures
- 6. fragments bounded by plane surfaces
- 7. resistance to localized plastic deformation induced by either mechanical indentation or abrasion
- 9. relating to or derived from living matter
- 12. a chemical compound that lacks carbon–hydrogen bonds
- 16. undergone transformation by heat, pressure, or other natural agencies
- 17. appearance of a surface broken in directions other than along cleavage planes
- 19. solid substances without a definite crystalline structure
- 21. formed by the accumulation or deposition of mineral or organic particles at Earth's surface
- 23. having solidified from lava or magma
- 24. way light interacts with the surface
Down
- 1. normally expressed as specific gravity
- 2. relating to or resembling metal or metals
- 3. powder produced when it is dragged across an un-weathered surface
- 5. it breaks along one set of parallel planes into thin, flat pieces
- 8. firm and stable in shape; not liquid or fluid
- 10. most important among non-fossil energy resources
- 11. an inorganic pigment usually of natural origin
- 13. hot molten or semifluid rock erupted from a volcano or fissure
- 14. relating to or produced by a volcano or volcanoes
- 15. solid inorganic substance of natural occurrence
- 18. continuous physical force exerted on or against an object by something in contact with it
- 20. earth's crust from which lava and other igneous rock is formed on cooling
- 22. solid mineral material forming part of the surface of the earth