1. Earth’s Rocks

2. What are rocks? Rock – any naturally formed solid in the crust made up of 1 or more minerals May have a mixture of properties Identification – Name the minerals it contains – Color – Density – Texture – based on how they were formed

3. Igneous Rocks Form when melted rock material cools and hardens Lava can also cool to form igneous rocks Used in monuments Obsidian – solid piece of volcanic glass Ex. Obsidian, basalt, granite, gabbro

4. Uses for Igneous Rock Gravestones Buildings Countertops Tools

5. Sedimentary Rocks Made of small bits of matter joined together – Weathered rocks, shells, remains of living things Formed when sediment is compacted or cemented together Ex. Shale, siltstone, sandstone, conglomerate, limestone, conquina, bituminous (coal)

6. Uses for Sedimentary Rock Buildings Monuments Park Benches Cement and concrete Contain fossils or remains of living things of the past Almost all fossils are found in sedimentary rock Energy

7. Metamorphic Rocks A rock formed under heat and pressure from another kind of rock The original rock stays solid They have new useful properties Slate is used in roofing shingles Marble for countertops, floors, and statues Anthracite is a form of hard coal

8. Uses for Metamorphic Rock Buildings Countertops Roofing shingles Energy