THIRD GRADE – TheWorksheets.CoM – Page 2

THIRD GRADE ROCKS - msnucleus.org

Mineral and Rock Kit BACKGROUND: Minerals make up rocks. Rocks are formed in many environments upon and within the Earth's crust. There are three types of rock, each formed in a different way. Igneous rock , formed by the cooling of magma (molten rock) inside the Earth or on the surface.