Tectonic plates float on an underlying molten layer.
Tectonic Plates float on the semi-molten mantle, and is part of the Earth's crust.
The tectonic plates are floating on top of the molten rock and moving around the planet.
The earth's tectonic plates are said to "float" on layers of magma, which is molten, or very hot liquid rock deep under the surface of theearth.
the crust. the layer below that is the layer of molten lava called the mantle. the continental plates move and float on this. this is known as continental drift
These plates make up the top layer of the Earth called the lithosphere. Directly under that layer is the asthenosphere. It's a flowing area of molten rock.
The earth's tectonic plates are said to "float" on layers of magma, which is molten, or very hot liquid rock deep under the surface of theearth.
Technically, no. They float on top of the asthenosphere, a layer of the upper mantle which is solid, but plastic in nature due to intense heat and pressure.
As the question uses the word mantle which is a compositional layer of the earth, then the answer is crust.
Tectonic Plates are part of the crust, and floats on the semi-molten rock magma layer.
The asthenosphere.
Asthenosphere
crust