The lower layer of the mantle that boarders Earth's molten core. Rocks are hot enough to flow in convection currents.

This layer of the crust is mostly sediment and is only 7-10 km thick.

A thin outer layer of rock above a planet's mantle, including all dry land.

The flat or gradually sloping land that extends under-water from the edge of a continent to a continental slope.

The layer of Earth made up of the crust and the rigid rock of the upper mantle.

This is the land that drops down steeply at the edge of a continental shelf.

The layer of rock between Earth's outer core and crust, in which most rock is hot enough to flow in convection currents.

The layer of Earth's upper mantle directly under the lithosphere in which rock is soft and weak because it is close to melting.

A layer of molten metal, mainly nickel (Ni) and iron (Fe), that surrounds Earth's inner core.

A solid sphere of metal, mainly nickel (Ni) iron (Fe), at Earth's center.

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