Earth's Core

The Earth's core is the innermost part of the Earth. It is divided into two layers: the outer core and the inner core.

Outer Core

The outer core is a liquid layer composed of iron and nickel. It is about 2,200 kilometers thick and is responsible for generating the Earth's magnetic field through the movement of molten metals.

Inner Core

The inner core is a solid sphere consisting primarily of iron and nickel. It has a radius of about 1,220 kilometers and is under immense pressure, causing it to remain solid despite the high temperatures.

Study Guide

1. Describe the composition of the outer core and its role in the Earth's magnetic field.
2. Explain why the inner core remains solid despite the high temperatures.
3. Discuss the significance of the Earth's core in relation to the planet's geology and magnetic field.
4. Compare and contrast the properties of the outer core and the inner core.

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