Types of Rock
Igneous rocks are formed lava cools and solidifies. There are over 700 types of igneous rocks, and the ones pictured below are diorite, granite,
Metamorphic Rocks are formed when rocks are modified by heat, pressure, and chemicals and are formed into different rocks. The rocks shown here are quartzite, marble, slate, soapstone, and phyllite.
Sedimentary Rocks are formed when dirt, dust, and other sediment gets picked up by wind and falls on other rocks to make a new rock. The rocks shown below are coal, limestone, sandstone, flint, and iron ore.