Download Laers Of Earth

Ori Meirovitch
November 20, 2014
Four Layers of Earth
Earth has four layers. One is called the crust, another one is the
mantle, and another one is the outer core, the last one is the inner core.
Scientists think they know what is in Earth’s layers. They found out by
studying seismic waves recorded seismographs during earthquakes.
One of the layers is called the crust. The crust is the outermost
layer. It is the layer we live on. The crust is the thinnest layer out of all four
of the layers. It is also completely solid. Another characteristic is that the
crust is thinner under water than under land.
The second layer is the mantle. The mantle is part liquid part solid.
The liquid part is farther from the crust. The solid part is colder and is closer
to the crust. No one has ever dug down to the mantle.
Under the mantle is the outer core. The outer core is completely
molten. It is the only completely molten layer. The outer core is probably
made of molten iron. The reason it is probably iron is because scientists
don’t know for sure.
The last layer is the inner core. The inner core is a circular ball. It is
completely solid because of its mass. It is at the center of the Earth. The
Inner Core is made of iron
Scientists would want to find out more about the inside of the Earth.
They don’t know because we don’t have the technology. In the future we
probably will have the technology.