Ocean floor
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Transcript of Ocean floor
![Page 1: Ocean floor](https://reader033.fdocuments.net/reader033/viewer/2022061211/5492b381ac7959042e8b46b2/html5/thumbnails/1.jpg)
Ocean floorOcean floor
![Page 2: Ocean floor](https://reader033.fdocuments.net/reader033/viewer/2022061211/5492b381ac7959042e8b46b2/html5/thumbnails/2.jpg)
The ocean floor Many of the important features of the
oceans are hidden in deep water.
The continental margin is the region around continents that includes the: continental shelf, continental slope, and continental rise.
![Page 3: Ocean floor](https://reader033.fdocuments.net/reader033/viewer/2022061211/5492b381ac7959042e8b46b2/html5/thumbnails/3.jpg)
The continental shelf Sand drifting down the steep face of a
continental shelf cuts into the shelf just like streams cut into valleys.
![Page 4: Ocean floor](https://reader033.fdocuments.net/reader033/viewer/2022061211/5492b381ac7959042e8b46b2/html5/thumbnails/4.jpg)
Features of the ocean floor Maps can show
the location of the continental shelf.
The true ocean floor is called the abyssal plain.
It is flat and smooth because a thick layer of sediment covers its features.
![Page 5: Ocean floor](https://reader033.fdocuments.net/reader033/viewer/2022061211/5492b381ac7959042e8b46b2/html5/thumbnails/5.jpg)
The deep ocean floor A barrier island is
a low, sandy island that lies parallel to the shoreline.
A bank is a low, flat region on the continental shelf.
A seamount is a steep-sided mountain that rises from the ocean floor.
![Page 6: Ocean floor](https://reader033.fdocuments.net/reader033/viewer/2022061211/5492b381ac7959042e8b46b2/html5/thumbnails/6.jpg)
The deep ocean floor A guyot is a
seamount that has eroded so that it has a flat top and is underwater.
Mid-ocean ridges mark places where two tectonic plates are separating and new ocean crust is being made.
Deep-ocean trenches are the deepest parts of the ocean.
![Page 7: Ocean floor](https://reader033.fdocuments.net/reader033/viewer/2022061211/5492b381ac7959042e8b46b2/html5/thumbnails/7.jpg)
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Investigation 22C
Key Question: How do temperature and salinity cause
ocean layering?
Global Winds and Ocean Currents
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Rip Currents
More than 80% of water rescues performed by surf beach lifeguards are due to rip currents.
Rip currents are sometimes called riptides, or undertow. Learn why these two terms are misleading.