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Download Continental Shelf • The extended perimeter of each continent and
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Transcript
Continental Shelf • The extended perimeter of each continent and associated coast lines • Exposed during the Ice Age - submerged when glaciers receded • Width is different with each continent Continental Slope • Connects the Continental Shelf and the bottom of the ocean • Begins where the shelf drops - 130 meters • 20 kilometers wide Continental Rise • At the bottom of the Continental Slope - an underwater hill composed of tons of accumulated sediments • Connects to the abyssal plain Abyssal Plain • Underwater plain on the ocean floor - 3000 and 6000 meters • Cover more than 50% of Earth’s surface - less than 1% has been mapped • Flat, smooth regions with physical features created by plate tectonic movement Ocean Ridge • Underwater mountain systems of varying lengths and heights Seamount • Mountain rising from the ocean floor that does not reach the water’s surface - varying heights • Formed from extinct volcanoes Guyot • An isolated underwater volcanic mountain with a flat top over 200 meters • Must be at least 3000 meters tall to be considered one
