Lithosphere
pop
The Earth does not have a "rigid" outer covering, it has an atmosphere.Below the atmosphere is the crust which is made of tectonic plates. However there plates are NOT rigid and to describe them as such would be incorrect, they deform and fold.
crust
you
The outermost rigid layer of the earth is called the crust.
pop
the lithoseshere
There is no specific term for such a general block. "Lithospheric block" would be acceptable, but it would be best to describe exactly what you mean by it.
it is the crust because the crust is thin and rigid with rock
No. The crust is rigid; it does not allow convection.
The Earth does not have a "rigid" outer covering, it has an atmosphere.Below the atmosphere is the crust which is made of tectonic plates. However there plates are NOT rigid and to describe them as such would be incorrect, they deform and fold.
crust
you
rigid
rigid
The rigid layer that is the upper mantle and crust is called the lithosphere.
The rigid, rocky layer of the Earth is called the lithosphere.