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Questions and Answers
What is another name for the oceanic relief?
What is another name for the oceanic relief?
Sea relief, underwater relief or ocean floor
What is the continental shelf?
What is the continental shelf?
The region of the ocean floor closest to the coast.
What are the depth ranges of the continental shelf?
What are the depth ranges of the continental shelf?
Between 0 and 200 meters below the sea surface.
What are the terms used to describe the continental shelf, slope and rise collectively?
What are the terms used to describe the continental shelf, slope and rise collectively?
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What is an underwater basin?
What is an underwater basin?
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What are abyssal plains?
What are abyssal plains?
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What are ocean trenches?
What are ocean trenches?
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What are oceanic ridges?
What are oceanic ridges?
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What are seamounts?
What are seamounts?
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Study Notes
Oceanic Relief
- Defined as sea relief, underwater relief, or ocean floor
- Various formations within oceanic relief include:
Continental Shelf
- Region closest to the coast, a flat extension
- Gradual increase in depth away from the coast
- Depth ranges between 0 and 200 meters below the sea surface
- High concentration of marine plant and animal life
Continental Slope
- Sharp decline or descent from the continental shelf
- Depth range between 3000 and 4000 meters
- Zone of sediment precipitation, controlled by gravity
Continental Rise
- Gradual transition to the abyssal plain
- Filled with sediment
- Includes continental shelf, slope, and rise; collectively known as the continental margin
Submarine Canyons
- Deep valleys carved into the continental slope
- Often originate on land and continue into the sea
- Formed by erosion, often by rivers
Seamounts
- Volcanic hills on the ocean floor
- Can reach elevations up to 1000 meters above the seafloor
Oceanic Ridges
- Formed by the spreading apart of tectonic plates
- Magma rises to create new crust
- Areas of volcanic and seismic activity
Abyssal Plains
- Extensive flat areas on the ocean floor
- Formed by sediments from continents
- Very deep part of the ocean
Ocean Trenches
- Deep, narrow depressions
- Tectonic plates collide (one subducts under another), creating trenches
- Areas of seismic activity
- Also known as oceanic trenches or simply as trench
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Description
This quiz explores the various formations of oceanic relief, including the continental shelf, slope, rise, submarine canyons, and seamounts. Understand the depth, features, and ecological significance of these underwater landscapes.
