Rocks
By: Thi Elaine Frantzis
Igneous Rock
Igneous rocks form by volcanoes. There are over 700 different kinds of this mineral. This mineral forms with many bubbles inside.
Sedimentary Rock
This mineral is made of many other minerals pressed together. Some beautiful cliffs are made of sedimentary rock. If you look at one closely sometimes you can tell which one is the oldest.
Metamorphic Rock
Metamorphic rock has a meaning of "to change from" in the language of the Greeks. These rocks form by one form to another. It forms deep in the Earths crust with the hot temp.