Label Subduction (Plate Convergence) Printout

Asthenosphere = Upper Mantle (flowing): the lower part of the upper mantle that exhibits plastic (flowing) properties. It is located below the lithosphere (the crust and upper mantle).

Lithosphere: the crust plus the rigid, upper mantle.

Upper Mantle (rigid): the uppermost part of the mantle, part of the lithosphere.

Volcanos: a place on the Earth’s surface where molten rock, gases and pyroclastic debris erupt through the earth’s crust.

Continental Crust: thick parts of the Earth’s crust, not located under the oceans.

Oceanic Crust: thin parts of the Earth’s crust located under the oceans.

Magma: molten rock withing the Earth’s mantle. In seafloor spreading, magma moves from the asthenosphere to the crust.

Lower Mantle (semi-rigid): the deepest parts of the mantle, just above the core.

Subduction Zone: the area in which one part of the Earth’s crust (a plate) is pushed underneath another plate as the two plates collide.

Ocean: large bodies of water sitting atop oceanic crust.