Earth’s Structure (II)

Geography SSS1 First Term

Week 7

Earth’s Structure (II)

Performance Objective

The student should be able to:

• The Earth crust
• The Mantle or Mesosphere
• The core or Barysphere

The Earth is made up of four distinct layers

The inner core is in the centre and is the hottest part of the Earth. It is solid and made up of iron and nickel with temperatures of up to 5,500°C. With its immense heat energy, the inner core is like the engine room of the Earth.

The outer core is the layer surrounding the inner core. It is a liquid layer, also made up of iron and nickel. It is still extremely hot, with temperatures similar to the inner core.

The mantle…