Rocks of the Earth
Rocks of the Earth
The rock cycle
The continual process by which rocks change from one type to another
Metamorphic rocks
Coarse-grained
sandstone
Fine-grained
Shale
A rock that is completely transformed or changed from an igneous or sedimentary rock under intense heat or pressure
Sedimentary rocks
formed by the cementing and hardening of layers of sediments under pressure from the overlying layers
Igneous rocks
Fine-grained igneous rocks
Eg. Basalt
formed when lava cools and hardens quickly on the Earth's surface.
Coarse-grained igneous rocks
Eg. Granite
formed when magma cools and hardens slowly in the Earth's interior
Igneous rocks are magma that has cooled and hardened, either beneath or above the Earth's surface
Rocks are solid materials of the Earth's crust
