Ocean Topography
Ocean
 The study of landforms
Topography
on the ocean floor
 Starts with the
continental shelf and the
continental slope, and
ocean basin floor to the
Trench
Plate
Tectonics
 The theory that Earth's
outer shell is divided
into several plates that
glide over the mantle.
 They cause movements of
the ocean floor creating
plains, mountains, and
deep valleys.
Mariana
Trench
 The Mariana Trench is
located in the Pacific
Ocean.
 It is the deepest part of
the earth's oceans, and the
deepest part of the earth.
 It was created by oceanto-ocean subduction.
MidAtlantic
Ridge
 A huge chain of
underwater mountains that
runs down the middle of
the Atlantic Ocean in a
Divergent boundary.
Seamount
 A mountain rising from the
ocean seafloor that does
not reach to the water's
surface (sea level)
 Mountain under the sea or
ocean
Continental
Shelf
 The part of the continent
that is under water.
 The edge of a continent
that lies under the ocean.
Continental
Slope
Steep slope
from a continental shelf to the
ocean floor
Abyssal
Plain
Flat seafloor on the deepest
part of the ocean floor
Rift Valley
 The valleys form when
continental crust is pull
apart
 Also when oceanic plates
are moving apart forming a
divergent boundary.