Earth's Core

The Earth's core is a hot, dense, metallic ball composed primarily of iron and nickel. It is divided into two distinct regions: the outer core and the inner core.

Outer Core

The outer core is a liquid layer that surrounds the inner core. It is composed of molten iron and nickel and is responsible for generating the Earth's magnetic field through the movement of these metallic fluids.

Inner Core

The inner core is a solid, dense sphere with a radius of about 1,220 kilometers. It is under immense pressure, which causes the iron and nickel to be in a solid state despite the high temperatures. The inner core is thought to be as hot as the surface of the sun.

Study Guide

Key Concepts

• The composition of the Earth's core
• The two regions of the core: outer core and inner core
• The properties and characteristics of the outer and inner core
• The role of the core in generating the Earth's magnetic field

Study Questions

1. What are the primary elements that make up the Earth's core?
2. What are the two regions of the Earth's core and their properties?
3. How does the movement of metallic fluids in the outer core contribute to the Earth's magnetic field?
4. What are the conditions that cause the inner core to remain solid despite high temperatures?

Further Exploration

Research the latest scientific findings and theories about the Earth's core. Explore how advancements in technology have allowed scientists to study and understand the core more effectively.

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