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Sasser S6E5d

Earth Science

TermDefinition
ocean basin this is the actual depression in Earth's surfce that holds the ocean water
continental shelf the gradual sloping end of a continent that extends under the ocean
continental slope drops more steeply, and extends from the outer edge of the shelf to the ocean floor
continental rise base of the continental slope made of large piles of sediment
seamounts these are underwater mountains/volcanoes that do not break the surface of the ocean
abyssal plains is some of the deepest parts of the ocean, and some of the flattest parts of Earth
volcanic island is formed by volcanic eruptions. The lava continues to pile up and harden and the mountain/island breaks the surface of the ocean
The Mid-Ocean Ridge is between 70,000 and 80,000 km long. Is a continuous chain of undersea mountains that runs all around the world. Is the longest mountain chain on Earth. Forms new ocean floor as lava erupts through the Earth's crust.
Trenches are like canyons on the bottom of the ocean floor. They are some of the deepest parts of the earth. Some bottoms haven't even been explored yet.
The Marian Trench This is the deepest trench we know of; it is over 11 km deep. It is located in the Pacific Ocean. Mt. Everest could easily fit inside of it. There would still be over 2000 m of water over it
sonar technology is based on the echo-ranging behavior of bats. Scientists use this to determine the ocean's depth by sending sound pulses from a ship down into the ocean.
Created by: bsasser
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