Journey To The Center Of The Earth

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by nicoleiulo
Last updated 6 years ago

Discipline:
Science
Subject:
Earth Sciences
Grade:
8

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Journey To The Center Of The Earth

The layers of the Earth.

A peach represents the Earth because the crust would be the skin of the peach, the mantle would be the actual peach part, and the seed would represent the core.

Exploring Inside The Earth!

Works Cited• http://www.astrogeodata.it/id194.htm• http://www.unc.edu/depts/oceanweb/turtles/geomag.html• http://crack.seismo.unr.edu/ftp/pub/louie/class/plate/velocity.html• http://www.kidsgeo.com/geology-for-kids/0001-the-lithosphere.php• http://gsi.ir/General/Lang_en/Page_66/GroupId_01-09/DataId_512/Action_Pn4/LITHOSPHERE.html• http://www.enchantedlearning.com/subjects/astronomy/planets/earth/Continents.shtml• http://geology.com/nsta/earth-internal-structure.shtml• http://science.nationalgeographic.com/science/earth/inside-the-earth

Our journey to the center of the Earth wasn't that easy. We encountered many problems along the way. We had to go through many hot and dense layers of the Earth. We first went through the outer layer, called the crust. We then traveled to the next layer, the mantle. Then finally we finished our journey when we reached the core.

By: Lindi Hilsabeck, Nicole Iulo, Jesse Jones, and Justin Kersey

The next place we reached during our journey was the Earth's mantle. What we learned about the mantle was that it is composed of olivine-rich rock. Its lowest temperature is beneath the crust. Its highest temperature is where mantle material is in contact with the heat-producing core. Upper mantle rocks are brittle and can cause earthquakes. Lower mantle rocks are soft, and flow when subjected to forces instead of breaking.

At the start of our journey, we noticed right away that there were two different types of crusts. One is oceanic and one is continental. We discovered the size of the oceanic crust is smaller than the continental crust by about 25 miles. The continental crust is thicker, so it floods in high relief and it is composed of mostly granite. As we were leaving the crust, we realized that the ground we see and step on is the crust.

Our last and final destination was the core! We discovered the core is made up of Iron and Nickel. The outer core and inner core are located 2,900 km. beneath the crust. The temperature is 9,000 degrees Fahrenheit . As we kept getting closer to the center of the core, it was getting hotter and hotter. This meant we couldn't keep going or else we would've burned up...! We then decided to head back to the crust.

As we were boarding our ship to travel, we bumped into Alfred Wegener! He also boarding a ship, but he was going to Greenland to study polar air circulation. He is a scientist who was interested in geophysics, developing fields of meteorology, and climatology. He is a famous man because he came up with the theory of "continental drift".

When we were heading to mantle, we had to first pass through the lithosphere. The lithosphere is the outer solid part of the earth. It includes the crust and uppermost mantle. Below the crust, the lithosphere is brittle enough at some locations to cause earthquakes by faulting. It is about 100 km. thick, so it took us quite a while to get through it. But we finally made it to the mantle.

On the way we learned about how plate tectonics work. Plate tectonics is the theory that Earth's outer layer is made up of "plates". When plates sub-duct, volcanoes start to form. This happens because of the heat buildup underneath the crust. Convection within the Earth's mantle pushes the plates which cause earthquakes to occur because these plates are shifting.

The plates of the Earth.

The lithosphere is in between the crust and the mantle.

Sceintist Alfred Wegener


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