1. study of rocks is called Petrology 2. rock - any naturally occurring solid mass of mineral or mineral-like matter 3 . After troposhre - stratosphere
4 . Hardness – minerals ranked by their relative hardness using Mohs Hardness Scale 5 . Fracture – random pattern of breakage - cleavage 6 . partner of oceanic crust - continental 7. diamond hardest – mohs scale 10 8 . from Latin ignis for “fire ” 9. seawater - NaCl 10-11. Most abundant atoms in Earth’s crust are oxygen (46.6% by weight) and silicon (27.7% by weight)
12. Atoms Smallest particles of matter 13. Negative Subatomic particle 14. Silver – Ag 15. Sn – Tin 16. Lead – Pb 17. K –Potassium 18. As – Arsenic 19. W – Tungsten 20. Reflection towards light- luster