The Ocean Floor
image and text from http://www.mrtrent.com/2011/12/week-of-december-5-2011.html
- I. How do scientist study the ocean floor? —
- The ocean floor can be as much at 11,000 meters below the surface!
- b. —ROV’s (Remotely Operated Vehicles)
- c. —SONAR (Sound Nagivation And Ranging)
- d. —Satellites (Geosat- once a top secret military satellite)
- II. What are the two major regions of the ocean?
- a. —Continental Margin- the edge of a continent that is covered by water.
- b. —Deep-ocean Basin- begins at the edge of the continental margin and extends under the deepest parts of the ocean.
- III. The Continental Shelf
- a. —What is it? Starts at the shoreline and slopes gently toward open ocean (200 m)
- b. —Where is it located? The Continental Margin
- IV. The Continental Slope
- a. —What is it? The steepest part of the continental margin. (200 m – 4,000 m)
- b. —Where is it located? Begins at the edge of the continental shelf and continues to continental rise
- V. The Continental Rise
- a. —What is it? The boundary between the continental margin and the deep-ocean basin.
- b. —Where is it located? The base of the continental slope
- VI. The Abyssal Plain
- a. —What is it? Flat, almost level part of the ocean basin
- b. —Where is it located? Between continental margins in deep ocean
- VII. The Mid-Ocean Ridge
- a. —What is it? A long mountain chain that forms from moving tectonic plates
- b. —Where is it located? Floor of the abyssal plain
- VIII. Rift Valley
- a. —What is it? A crack in the ocean floor where magma rises and cools
- b. —Where is it located? In the mid-ocean ridge
- IX. Ocean Trench
- a. —What is it? Long, narrow valleys that can be up to 11,000 m deep
- b. —Where is it located? Where tectonic plates are moving together (subduction)
The Ocean floor off of New York, and off of Boston
Ocean Water and Ocean Life
The Dynamic Ocean
“How the Oceans Came to Be” packet: How the ocean came to be
The oceans of water molecules trapped under the oceans, deep within the earth’s crust