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SasserSub-topography

Earth Science

TermDefinition
ocean basin this is the actual depression in Earth's surface 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
continental rise base of the continental slope made of large piles of sediment
seamounts underwater mountains/volcanoes
abyssal plains some of the deepest parts of the ocean and some of the flattest parts of Earth
volcanic island 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 round the world. Is the longest mountain chain on Earth. Forms new ocean floor as lava erutps 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 of trenches haven't even been explored yet.
The Marian Trench This is the deepest trench we know; it is over 11 km deep. It is located in the Pacific Ocean. Most trenches are int he Pacific Ocean. Mt. Everest could easily fit int he Mariana Trench, and there would still be over 2000 m of water over it!
Sonar technology is based on the echo-ranging behavior of bats. Scientists use sonar to determine the ocean's depth by sending sound pulses from a ship down into the ocean.
geosat top-secret military satellite used to measure slight changes in the height of ocean's surface such as: mountains and trenches
Created by: bsasser
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