The three classes of rocks are sedimentary, metamorphic, and igneous. How are rocks classified into one of these three groups? (1 point) Responses According to the amount of weathering they have endured According to the amount of weathering they have endured According to their position in the lithosphere According to their position in the lithosphere According to the method of their formation According to the method of their formation According to how many times they have been through the rock cycle According to how many times they have been through the rock cycle Skip to navigation page 2 of 2

Answer 1

Rocks are classified into the three groups—sedimentary, metamorphic, and igneous—according to the method of their formation. This classification is based on how the rocks are formed: igneous rocks are formed from cooled magma or lava, sedimentary rocks are formed from the accumulation and compaction of sediments, and metamorphic rocks are formed from the alteration of existing rocks due to heat and pressure.