Geology by Spencer

Geology is the study of the earth and the materials that make it up; the structure of rocks and the process in which the rocks change. It also studies the organisms that live on the earth. Mainly how the earth and the things that live on the earth have changed throughout the course of history.

            Geology gives us understanding of earth’s history; shows us the evolutionary history of life, and what weather and plate tectonics were like in the past. We are able to find out how old something is. We can figure out how old it is with absolute and relative dating.

            The Rock Cycle:
            The rock Cycle is an important part of geology. As said earlier rocks are a major part of earth, and geology is the study of earth. The rock cycle contains three main rock types; sedimentary, igneous and metamorphic. The rock cycle shows the relationship between these three rocks and magma. When a rock crystalizes from magma/lava it forms igneous rock. If this rock is weathered and eroded. It would then be deposited and over time becomes sedimentary rock. This rock could then be turned into metamorphic rock by intense and extreme heat and pressure that actually change the mineral content. (An igneous rock could go straight to metamorphic, but it doesn’t have to be in that order.) All of these rocks can be re-melted and created new magma, thus starting over the rock cycle once again.

            Geologists are the people that study the way earth works, like how volcanoes, earthquakes, landslides, floods, and other natural disasters happen.  They work to understand the history of our earth. They study the things that are potentially dangerous to people, and help figure out ways to help predict these disasters. They do this so that structures are not built in possibly hazardous places. Geologists were the ones who figured out earthquake proof buildings. These buildings aren’t always 100% earthquake proof, but they are safer than normal buildings. The bottom of the buildings are ball and bearings, so when an earthquakes hits, instead of falling over, they roll back and forth.

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