tt

What is the composition of the Earth's crust and core?

The crust and mantle consist of rock, while the core is primarily metal.

What are the three methods of heat transfer from the Earth's core to the surface?

Convection, conduction, and radiation are the primary methods.

In which layers does convection primarily occur and why?

Convection occurs in the outer core and mantle due to fluid movement.

Why is conduction the only heat transfer method at the core-mantle boundary?

Different materials prevent convection from crossing the boundary.