Part A. Seafloor Spreading Process
lower mantle (semi-rigid) - the
deepest parts of the mantle.just
above the core
magma - molten rock within the Earth's
mantle. In the seafloor spreading, magma
moves up to the crust
ocean - large bodies of water
sitting atop the ocean's crust
oceanic crust - thin parts of the
Tes Meri
Earth's crust located under the
oceans
oceanic ridge - mountain range
where Earth's tectonic plates are
gradually moving apart
upper mantle (rigid) - the
uppermost part of the mantle,
part of the lithosphere
Part B. Subduction Process
1. Continental crust - thick layers of the Earth's crust not located under the ocean
2. Lower mantle - the deepest parts of the mantle
3. Magma - molten rock in the Earth's mantle that moves from the asthenosphere
to the crust
4. Ocean - large bodies of water sitting on the oceanic crust
5. Oceanic crust - thin layers of the crust under the ocean
6. Subduction zone - the place where one part of the Earth's crust is pushed under
another plate
7. Upper mantle - the ton nart of the mantle
-​