1. Texture The look and feel of the rocks surface, includes grain, crystals, and pattern

2. Coarse Grain Grain is easily visible. Can indicate slow cooling

3. Fine Grain Grain is not easily visible or there is no grain. Can indicate SLOW cooling

4. Sediment Small pieces of material from rocks or living things, sand, pebbles, dirt, etc

5. Depositon Sediment settles out of water or wind carrying it and is deposited in layers that eventually will form rock

6. Compaction The process that presses sediment together

7. Cementation Dissolved minerals recrystallize and cement together, forming sediment into a rock

8. Clastic Rock A rock made from rock fragments ‘squeezed’ together. Examples include sandstone, shale, and conglomerate

9. Organic Rock Made from thick layers of remains of plants and animals. Examples include coal and limestone

10. Chemical Rocks Forms when minerals dissolved in solution crystalize. Examples include halite and gypsum

11. Igneous Rock Rock that forms when magma/lava cools

12. Intrusive Igneous rock that forms inside the earth - Cools slowly - Large Crystals (coarse grain) - EX: Granite

13. Extrusive Igneous rock that cools on the surface of the Earth - Cools quickly - Forms small crystals (fine grain) - EX: Basalt or Obsidian

14. Metamorphic Rock Metamorphic means – CHANGE FORM, metamorphic rock occurs when any type of rock is changed by HEAT and PRESSURE

15. Folliation Has thin layers of alligned minerals. Can look like ‘stripes’. Indicates metamorphic rock