Types Of Rocks
Igneous Rock is formed by volcanoes.Igneous Rock can form inside Earth as magma cools.Igneous Rock can give clues about where it's formed.
Sedimentary Rock is formed from sediment that is cemented together.Sediment is built up and forms Sedimentary Rock.Sandstone, Shale,and Limestone, Are types of Sedimentary Rock.
Metamorphic Rock is changed by heat and pressure.The word Metamorphic is from the Greek meaning "to change form."Marble and Quartzite are Metamorphic Rocks