Earth is a fascinating planet that has many mysteries and secrets waiting to be uncovered. One of the most intriguing discoveries in recent years was the existence of four primary zones inside Earth’s interior, as confirmed by seismic waves. These zones are called lithospheric plates because they form from rocks (lithos) on earth’s surface. The four zones include:
The Upper Zone – this zone includes everything below the crust and up to about 100 kilometers beneath it; The Lower Zone – this zone extends between 100-200 km deep into Earth’s mantle; The Transition Zone – this zone is found at 200-300 km deep into Earth’s mantle and separates the upper and lower parts; and finally, The Inner Core – which is found at the center of Earth and extends to a depth of about 2900 kilometers. The Inner Core – which is found at the center of Earth and extends to a depth of about 2900 kilometers.