Rocks

5. is a naturally occurring chemical compound, usually of crystalline form and not produced by life processes.
7. they carry history of changes in Earth's magnetic field.
11. are rocks formed from solidified magma underneath the Earth.
12. a major class of sedimentary rock that's composed mainly of rocks formed by minerals formerly dissolved in seawater.
15. mostly found deposited in marine environments.
17. tells how a mineral's crystals are arranged.
19. type of rock that underwent a process called, "metamorphism".
20. composed of evaporites, precipitates, and bioclastics.
21. type of rock divided into two major classes namely, chemical sediments and detrital sediments.
23. minerals with phosphorus.
24. is the color of mineral in powdered form.
25. refers to the measure of mineral's resistance to scratching.

1. grains, matrix, and cement are the components of this classification of sedimentary rock.
2. another term used to refer to extrusive rocks.
3. Latin word that means, "fire".
4. main factor of contact metamorphism.
6. is the emission of light by a substance that has absorbed light or other electromagnetic radiation.
8. formed by the solidification or crystallization of magma.
9. rocks formed from compacted organic matter.
10. indicates the ability of a mineral to attract or repel other minerals.
13. rocks formed from the evaporation of water leaving the dissolved minerals to crystallize.
14. rocks formed when minerals from mineral-supersaturated waters start to crystallize at the bottom of the solution.
16. cycle is the evolution of rock material under changing physical conditions at or beneath the Earth's surface.
18. are natural substances consisting of aggregate minerals.
22. it is the result of the way how minerals absorb light.