Mantle

The composition of the lower mantle includes silicon, magnesium, sulfides, and oxides. The temperature is around 3000 Celsius. The range for the mantle's depth is 7-35km. Amazing right, but that is not all the mantle is the only parts of the earth that is completely liquid!

The lower mantle is also called the mesosphere. This is because the mesosphere is in between part of the mantle, between the mantle and core.

Lower