The Journey to the Center of the Earth
By: Zoe Gross
No scientist has ever been to the center of the earth, even machines. Nothing that scientist did could get them past the crust because the temperature and pressure increase the father you go down. Then how in the world do they know what's down there? Just like us we can tell what is in us by what's on the outside. Geologists are scientist who study earths inner by studying seismic waves and rock. That is how Geologists know what is inside earth.
Earth has three main layers crust, mantel, and core. Geologist has even gone farther and broke the crust in half, the mantel into threes, and the core in half. Did you know there are 7 layers of the earth? They are known as the continental crust, oceanic crust, lithosphere, asthenosphere, lower mantle, outer core, and inner core.
Those are the layers of the earth.
The crust and upper mantel are amazing they are the first four layers. The continental crust is what forms the continents and contains mostly Granite. The oceanic crust is the crust at the bottom of the ocean and is made of basalt. The lithosphere forms a rigid layer in between the crust and mantel. After the lithosphere comes a softer bendable layer called the asthenosphere. Together these layers form a splendid begging of earth.