Outer core

How long would it take to fall down a hole dug straight through the Earth to the other side? Even less time than long previously thought, a scientist now reveals.

Textbooks teach that the Earth has four layers: the crust, the mantle, the outer core and the inner core, but a fifth layer has been suspected, and this new study provides evidence for its existence.

Researchers have found that the Earth’s inner core has an inner core of its own ... smaller than the moon.

Earth layers, computer artwork. The external layer shows the Earth's surface topography and atmosphere, including land, water and clouds.

Earth's Layers Lessons and Worksheets for Kids in Elementary School & Middle School.

This artist concept shows the layers of the sun. Image credit: NASA Learn more/access larger images: www.nasa.gov/mission_pages/solar-b/solar_020.html

Layers of the Earth. Lithosphere. Asthenosphere. Earth’s Layers. Earth’s Layers. Crust. (10-25 miles). Mantle. 1,800 miles. Outer Core. 1,430 miles. Inner Core. 750 mile radius. Inside Our Earth. The crust is made of soil, water and rock. The mantle is iron and magnesium.

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The Earth is made up of 4 different layers. They each have unique characteristics as described below. The diagram shows where each layer is located. Crust The crust is the thinnest layer of the E…