Distinguish between Core and mantle.

The Mantle

• The portion of the interior beyond the crust is called the mantle.
• It is in a solid state.
• It has a density higher than the crust portion.
• The thickness ranges from 10-200 km.
• The mantle extends from Moho’s discontinuity to a depth of 2,900 km.
• The asthenosphere is the upper portion of Mantle.
• It is the chief source of magma that finds its way to the surface during volcanic eruptions.
• The crust and the uppermost part of the mantle are called lithosphere.
• The major constituent elements of the mantle are Silicon and Magnesium and hence it is also termed as SIMA

The Core

• The core-mantle boundary is positioned at the depth of 2,900 km.
• The inner core is in the solid state whereas the outer core is in the liquid state.
• The core is made up of very heavy material mostly constituted by nickel and iron. Hence it is also called the “nife” layer.