The Rock Cycle Rocks 9/2/17


Summary:
Geology is the study of Earth, as well as Earth's structure and the forces that shape it. Abram's principal or James Hutton's principle is that geologic processes that operate today operated the same way in the past or in other places that have the same conditions.Hutton's principal, uniformitarianism, allows us to estimate what happened to rocks long before humans roamed the Earth and can help us predict what may happen to Earth in the future. There are three types of rocks, igneous rocks, sedimentary rocks and metamorphic rocks. Igneous rocks form when molten material from under the Earth's surface cools and hardens. Sedimentary Rock is made of sediments that have been deposited on top of each other and pressed together to form solid rock. Metamorphic rock is an existing rock that has been changed by heat, pressure or chemical reactions. Landforms are features on Earth's surface like mountains that are made when two plates meet. Fun fact, the difference between lava and magma is that magma is under the surface while lava is above the surface.

S&EP- Using Models:
As you can see in the pictures above, we used starbursts to model the rock cycle. We all started with two different colored starbursts. I stress the words different color because if they were the same color we wouldn't be able to see some of the interactions the pieces of rock had with each other. We then cut up each starburst into six pieces. After that, we piled up the pieces. Next, we applied slight pressure so the pieces stuck together, but weren't completely smashed. This represented sedimentary rock. Afterward, we put our sedimentary rock in a bag and pressed down with all our weight turning it into metamorphic rock. Lastly, we placed half our rock in the microwave(volcano), to see it turn into igneous rock. This model was extremely useful in helping me visualize the main changes from one type of rock to another. For example, I can now clearly picture how in metamorphic rock the pieces are well mixed and you can't tell the pieces of rock were once separate, like when it was sedimentary rock. I personally found this model one of the most useful because it used materials the whole class was interested in.

 XCC-Cause and Effect:
This week when working re visiting topics from 6th grade, such as landforms, I really noticed a strong cause and effect relationship. First and foremost there is some background information we needed to know or just recall because it has been quite a while. There are two types of crusts, continental, and oceanic. As for boundaries, there are three, divergent, convergent, and transform. Divergent boundaries diverge or move away from each other. This type of boundary can lead to sea floors. Next, we have the convergent boundary which is the exact opposite of a divergent boundary. A convergent boundary comes together to and creates mountains. There are times when a convergent boundary can cause subduction when one plate goes on top of the other. Finally, there is the transform boundary and has a grinding motion. This rubbing is what causes earthquakes to occur. Re visiting the topic of landforms allowed me to really understand how plates and boundaries have a cause and effect relationship with landforms.

 Multiplier:
This week I was an initiator because I tried to continuously participate while recalling information from previous classes and grades. 

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