I learned a lot about rocks and how the earth is a great recycler. Basically rocks are always changing in to another type of rock , even if it takes a really long time.
There are three types of rocks: igneous, sedimentary, and metamorphic.
Igneous rocks
Igneous rocks are made from magma or lava that has cooled down. This can happen either inside the Earth or out on top of the surface, like when a volcano erupts.
Sedimentary Rocks
Sedimentary rocks are formed when other rocks and coral are eroded into small pieces. Then the small pieces travel down and settle and sit around under heat and pressure they form a sedimentary rock.
Metamorphic Rocks
Metamorphic rocks are formed when igneous or sedimentary rocks undergo heat, pressure or chemical reactions ...making them into a different rock.
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