LETS TALK ROCK
TYPES of rocks IGNEOUS SEDIMENTARY METAMORPHIC
IGNEOUS
Formed from melted rock Three types of igneous rocks: Diorite- large crystals Andesite- small crystals Pumice- blasts from top of volcano.
SEDIMENtary
Formed from layers of natural material The Grand Canyon is mostly sedimentary. Layers can repeat.
metamorphic
Formed by changing one type of solid rock into another. This is known as metamorphism.
References Geiger, B. (2006). Rock Hound: Rocks tell Earth’s amazing story. National Geographic Explorer, 7-11. www.google.com/images