The Wandering Rocks

Rocks are made up of backbones of hills and mountains, It also the foundation of plains and valley. beneath the soil you walk, on he deep layer of soft mud that cover the ocean basin is a basement of hard rocks.. Rocks are often made up of the solidification of rock, debris and the chemical or physical modification of heat and pressure. Rocks are also composed of minerals that form into crystal like structures. There are 3 types of rocks: igneous, sedimentary and metamorphic rocks.  Igneous rocks form when magma solidifies. If the magma is brought to the surface by a volcanic eruption, it may solidify into an extrusive igneous rock. Magma may also solidify very slowly beneath the surface. The resulting intrusive igneous rock may be exposed later after uplift and erosion remove the overlying rock. The igneous rock, being out of equilibrium, may then undergo weathering and erosion, and the debris produced is transported and deposited as sediment. If the unconsolidated sediment becomes cemented, it becomes a sedimentary rock. As the rock is buried the additional layers of sediment and sedimentary rock, heat and pressure increase. Tectonic forces may also increase the temperature and pressure. If the temperature and pressure become high enough, usually at depths greater than several kilometers below the surface, the original sedimentary rock is no longer in equilibrium and recrystallizes. The new rock that forms is called a metamorphic rock. If the temperature gets very high the rock melts and becomes magma again, completing the cycle. However rocks are not expected to go through each step. To understand well, look at this image:

We use rocks for roads, metals, jewelry, tombstones, building materials, cosmetics, and many, many more things. Most of the famous sculptures of the world are made from blocks of stones such as granite and marble. Did you know that the Great Wall of China and the Taj Mahal are made out of rocks?  If we did not have rocks, this earth would be pretty empty. Who wants an empty earth? Not me