Core

Definition

The core is the innermost layer of a planet, primarily composed of metal. It plays a crucial role in generating the planet's magnetic field.

5 Must Know Facts For Your Next Test

1. Earth's core is divided into a solid inner core and a liquid outer core.
2. The core is predominantly composed of iron and nickel.
3. The temperature in Earth's inner core can reach up to 9,932°F (5,500°C).
4. Convection currents in the liquid outer core create Earth's magnetic field.
5. Seismic waves are used to study the structure and properties of Earth's core.

Review Questions

• What are the two main components of Earth's core?
• How does Earth's core contribute to its magnetic field?
• What methods do scientists use to study the structure of Earth's core?

Related terms

Mantle: The layer between Earth's crust and core, composed mainly of silicate rocks.

Seismic Waves: Energy waves generated by earthquakes or other geological activities that travel through Earth’s layers.

Magnetic Field: A field produced by electric currents, including those generated by convection currents in Earth's outer core.