Igneous – A rock that is formed through the solidification of molten rock.
Metamorphic rock – A rock transformed by heat, pressure, or both, into another rock.
Metasomatism – Process that changes the composition of a rock or mineral by the addition or replacement of chemicals.
Meteor – A rock from space that is completely vapourized while travelling through Earth’s atmosphere.
Meteorite – A rock from space that reaches the Earth’s surface.
Sedimentary rock – Rock that originates on Earth as an accumulation of sediments or precipitates from water.