FOUR DISTINCT LAYERS OF EARTH
Figure 1: Layers of Earth
The Earth’s Crust:
The first layer consists of about 10 miles of rock and loose materials.
Figure 2: Earth’s crust
What we see as soil and mountains is the only surface of the Earth; which is also called as the crust.
The Earth’s Mantle:
Travelling beyond the Earth’s crust; we can see the Earth’s mantle.
Figure 3: Earth’s mantle
The mantle extends to a depth of approximately 1800 miles and is made up of a thick solid rocky substance.
The Earth’s Core:
• There are two cores of Earth.
The Earth’s Outer Core:
Travelling still deeper within the Earth; the outer core extends to a depth of around 3000 miles beneath the surface.
Figure 4: Earth’s Outer Core
The outer core is made up of superheated lava.
The Earth’s Inner Core:
The inner core extends upto 900 miles inward towards the center of the Earth.
Figure 5: Earth’s Inner Core
The inner core is a solid ball of mostly iron and nickel.