Rocks are naturally occurring mixtures of minerals, mineraloids, glass or organic matter that are divided into three main types - igneous, sedimentary, and metamorphic - based on how they were formed. Rocks are continually changed over time by various geological processes through the rock cycle, where one type of rock can be transformed into another through weathering, erosion, melting and other changes. The core, mantle and crust act as a recycling machine that redistributes rocks.

1. ROCKS

11. Weathering, Erosion, Compaction, Cementation Recrystallization Weathering, Erosion, Compaction, Cementation Recrystallization Melting, Solidification Melting, Solidification IGNEOUS SEDIMENTARY METAMORPHIC

16. Some have large & small crystals (called porphyritic)

18. Peridotite: Intrusive or Extrusive? Why?

19. Granite: Intrusive or Extrusive? Why?

20. Porphyry: Intrusive or Extrusive? Why?

21. Obsidian: Intrusive or Extrusive? Why?

22. COMPOSITION— What kind of substances the rocks are made of

23. Basaltic Igneous Rocks —made from lava/magma that is low in silica , rich in iron and magnesium. Rocks are dark- colored .

24. Granitic Igneous Rocks—made from magma/lava high in silica and oxygen. Rocks are light -colored.

25. Andesitic Igneous Rocks—have a composition between basaltic and granitic .

26. Diorite

27. Basalt

28. Granite