Which layer of the Earth separates the crust and mantle?

Answer 1

The Core Mantle boundary - also known as the Guttenberg discontinuity separates the earth's mantle from its core.

It is divided into two layers, the inner core and the outer core. The inner core, the center of earth, is solid and about 780 miles (1,250 km) thick. The outer core is so hot that the metal is always molten, but the inner core pressures are so great that it cannot melt, even though temperatures there reach 6700ºF (3700ºC). The outer core is about 1370 miles (2,200 km) thick. Because the earth rotates, the outer core spins around the inner core and that causes the earth's magnetism.

Answer 2

The Mohorovičić discontinuity, which often is called simply 'Moho', separates the earth's crust from the topmost part of the planet's mantle.

Answer 3

A Discontinuity called the Guttenberg Weichert Discontinuity.

Answer 4

Moho Barrier