The upper mantle is harder than the lower mantle
The mantle is below the plates.
a rope
Multi-fingered grasping appendage. The difference between hands, paws, claws and talons is opposable thumbs.
They start with letter a
composition — the crust is primarily composed of lighter, silicate minerals like granite and basalt, while the mantle is composed of denser minerals like peridotite. This compositional difference contributes to variations in density, temperature, and behaviour between the crust and mantle layers of the Earth.
The uvula
The Mohorovicic discontinuity, or Moho, is the boundary between the Earth's crust and mantle, marking a change in seismic wave velocity. The Gutenberg discontinuity is the boundary between the Earth's mantle and outer core, where seismic waves change velocity and nature. Essentially, the Moho separates the crust and mantle, while the Gutenberg discontinuity separates the mantle and outer core.
Which appendage.
The boundary separating the Earth's mantle and core is known as the core-mantle boundary. This boundary is characterized by a sharp decrease in seismic wave velocities, indicating a difference in composition and properties between the outer core and the lower mantle.
Appendage is a noun.
The Mohorovicic discontinuity (Moho) is the boundary between the Earth's crust and mantle, where seismic waves change velocity. The Gutenberg discontinuity is the boundary between the Earth's mantle and outer core, characterized by a sharp increase in seismic wave velocities.