The igneous, sedimentary, and metamorphic rocks. Igneous

The SEEALL Academy                             Kahramon ErgashevClass 704                                    1/30/17Lab Essay ComponentThere are three main types of rocks. They are known as igneous, sedimentary, and metamorphic rocks. Igneous rocks form when molten minerals cool down. This leads to two kinds of igneous rocks. One of the igneous rocks is extrusive igneous rocks. They are formed when molten mineral cools down above earth’s surface(when lava cools). That leaves with the intrusive igneous rocks. They are formed when molten mineral cools down below earth’s surface(when lava cools). Now sedimentary rocks are rocks that are formed when rocks are given pressure. There are three types of sedimentary rocks in the world. One is an organic sedimentary rock that has living things in the past that are compacted and pressured under the earth which turned it into a rock.  Another is the chemical sedimentary rock that is  made when the minerals from the water precipitate. And lastly there is there is the clastic sedimentary rock known as detrital that is formed by weathering, then deposited into a place where the sediment becomes compacted and cemented. There are also metamorphic rocks. They form when heat and pressure are applied to them. There are two types of metamorphic rocks, a foliated and a non foliated. Foliated metamorphic rocks are the ones that have crystals that look like they are in a pattern. Non foliated rocks are scattered everywhere in the rock.   Each type of rocks has different uses. We have many ways to use igneous rocks that will be almost in our everyday lives. Rocks like granite are used for buildings, bridges, monuments, etc. Pumice is used to make concrete and low-density cinder blocks. Basalt is mostly used for construction projects. There are also rocks like obsidian that are used for weapons, utensils, and other stuff. There might be more uses for igneous rocks if people be more creative about using them. Like igneous rocks, sedimentary rocks too, have many different uses. For example, limestone, a sedimentary rock is used to make lime. It also is used to make cement, paper, glass, etc. Sandstone and limestone are used for building stone. People all over the world use gypsum, another sedimentary rock to make plaster. Oil, natural gas, coal, and uranium come from sedimentary rocks so we use them for it. People use quartz(very commonly found in sedimentary rocks) to make glass. People use this rocks called phosphate-bearing sedimentary rocks for fertilizer. There are many more uses for sedimentary rocks than the ones I have mentioned.Also, metamorphic rocks have a lot of uses to human kind. Slate, an example of a sedimentary rock, is used to make tiles. It is also used as chalk sticks on a chalkboard. There is also quartzite and marble. People use them for doing things like material and artwork. Marble is also a part of toothpaste, plastics, and paper.  Some metamorphic rocks are used for decorative building stone. There are connections between the rock cycles and the three different types of rocks found on earth. The connection is that the rock cycle tells what will happen if something happens to a type of rock. For example, if the metamorphic rock melts, the rock cycle will say that it will turn into lava or magma depending on where it is. And when the lava or magma cools down, it will turn into an igneous rock. After igneous rocks get hit by weathering and erosion the sediments will go into the water. When the sediments compact and cement, they will become sedimentary rocks. If heat and pressure are applied to a sedimentary or igneous rock, it will turn into a metamorphic rock. The rock cycle could start from anywhere and change the outcome if what is applied to it changes.