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8.12: Ocean Zones

Difficulty Level: At Grade Created by: CK-12
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Vocabulary

aphotic zone

aphotic zone

The zone in the water column deeper than 200 m where sunlight does not penetrate.
intertidal zone

intertidal zone

The part of the ocean closest to the shore, between low and high tide.
neritic zone

neritic zone

The part of the ocean where the continental shelf gradually slopes seaward. Sunlight can penetrate to the bottom in much of the neritic zone.
oceanic zone

oceanic zone

The open ocean, where sunlight does not reach the seabed.
photic zone

photic zone

The upper 200 m of the ocean, where sunlight penetrates.
water column

water column

A vertical column of ocean water, divided into different zones according to their depth.

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Difficulty Level:
At Grade

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Date Created:
Feb 24, 2012
Last Modified:
May 26, 2016
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