Geology about different types of rocks

 For our topic we have been learning about different types of rocks and I found out the 3 most important types of rocks witch are Igneous, Sedimentary and Metamorphic. The difference between these rocks are Igneous is formed from lava in or out a volcano, Sedimentary is actually made of sand, shells or sediments and how its created is the sand sinks to the bottom of the ocean, because of the pressure the sand will harden and get more and more harder until the sand becomes sand stone. And finally Metamorphic rocks are basically formed when great pressure and heat deep inside the earth mix different types of rock together, or change rocks form. I learnt a lot about rocks in this topic and I hope you learnt something as well. Heres a photo of my work.