There are three types of rocks, igneous, sedimentary, and metamorphic. igneous rocks are formed at the cooling of magma or lava.  sedimentary rocks are formed by deposition  of material at the earths surface. metamorphic rocks are created by physical and chemical alteration.

Igneous rocks

Igneous rocks are formed when magma cools. Some kinds of igneous rocks can suck lava or magma up. There are many over 700 igneous rocks found over the world. Tuff one of igneous rock types are formed from ash from volcanic.

Sedimentary rocks

Sedimentary. Rocks are formed by deposits at the earths surface. There are three basic types of sedimentary rocks. Clastic organic and chemical rocks are the three main types of rocks.

Metamorphic rocks

Metamorphic rocks are formed by chemical and physical alteration. Metamorphic rocks have been changed over time by extreme heat and pressure. Uplift an derision helps bring metamorphic rocks to earths surface.