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Science Oceanography

continental shelf area of seabed that around a large land mass which is relatively shallow compared to the open ocean
continental slope the slope between the outer edge of the continental shelf and the deep ocean floor
continental rise sediment that builds up at the end of the continental slope
abyssal plain flat area on the ocean floor
mid ocean ridges ridge in the ocean signifying magma and seafloor spreading
rift valley a break in the Earth's surface that makes a deep trench
sea mounts a submarine mountain
ocean trenches a lond, narrow, deep, depression in the ocean floor