Important Definitions To Know:
•Igneous rock—rock that was once melted and then cooled and hardened
•Sedimentary rock—rock made when materials settle into layers and get squeezed until they harden into rock
•Metamorphic rock—rock that has been changed by heat or pressure
•Rock cycle—a series of processes in which one type of rock changes into another type of rock
•Sedimentary rock—rock made when materials settle into layers and get squeezed until they harden into rock
•Metamorphic rock—rock that has been changed by heat or pressure
•Rock cycle—a series of processes in which one type of rock changes into another type of rock