Igneous Rocks CK-12 Foundation

Igneous Rocks CK-12 Foundation igneous rock Igneous rocks The first rocks on Earth were igneous rocks Igneous rocks are formed by the cooling and hardening of molten material called magma The word therock88 Igneous rocks occur as fragmental and coherent units of varied form Disruption of liquid rock near and at the surface by the explosive expansion of dissolved

therock88 Igneous Rocks ▫ Igneous rocks are formed by the cooling of molten rock ▫ There are two major states of molten rock: Magma and Lava ▫ Magma is a form of

ufarocket Intrusive, or plutonic, igneous rock forms when magma is trapped deep inside the Earth Great globs of molten rock rise toward the surface Some of the magma The meaning of IGNEOUS ROCK is rock formed by solidification of a molten magma