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OCEANS
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What you will learn Describe the composition, location, and subsurface topography of Earth’s oceans. (Describe what oceans are made of, and what the ocean floor looks like).
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I. Exploring the Ocean Floor
Sonar- A. major device used in mapping the ocean floor. B. Uses sound waves to calculate the distance to an object.
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II. Ocean Floor Shallow Water
Continental shelf- gently sloping shallow area of the ocean floor extends outward from edge of continent. Continental slope- steep slope beyond the edge of the continental shelf.
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1. Trench- dark canyon so deep you cannot see the bottom.
B. Open Ocean 1. abyssal plain- a. broad area covered with thick layers of mud and silt. b. smooth, flat region of ocean floor 2. mid-ocean ridge- range of mountains that wind through the oceans. C. Deepest Depths- 1. Trench- dark canyon so deep you cannot see the bottom.
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Ocean Topography
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Ocean Topography Quiz
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III. Ocean Zones Intertidal Zone- extends from the highest high tide to the point exposed by the lowest low tide line. Neritic Zone- extends from the low-tide line out to the edge of the continental shelf. C. Open-ocean zone- Beyond the edge of the continental shelf. Includes the deepest darkest part of the ocean.
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Ocean Zones
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1. Surface Zone- Area at the top of the ocean. 2
1. Surface Zone- Area at the top of the ocean. 2. Transition Zone- Area between the surface zone and the deep zone. 3. Deep Zone- Area deep inside the ocean.
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