Chapter 23 The Ocean Floor 3 ways to study the ocean floor……. Echo sounding Sediment sampling Satellite observations.

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Presentation transcript:

Chapter 23 The Ocean Floor 3 ways to study the ocean floor……. Echo sounding Sediment sampling Satellite observations

Echo Sounding SONAR Sound signal is sent to the ocean floor and the time it takes to reach the ocean floor and return determines the depth

Sediment Sampling…Core Sampling Long, hollow cylindrical instrument removes a long core of sediments from the ocean floor

SatellitesProvides the greatest amount of speed and information for creating ocean floor maps

The Continental Margin Continental Margin Underwater part of the continental crust

Parts of the continental Margin Shelf Slope Rise

Parts of the continental Margin A plate boundary ……like a subduction zone Not on a plate boundary

The Ocean Basin Abyssal Plains Abyssal Hills Deep Sea Trenches Mid-Ocean Ridges Deep Ocean Vents Corals And Atolls Seamounts & Guyots

23.4 – Ocean Floor Sediments Terrigenous Biogenous Hydrogenous Sediments from the rocks on land Sediments from once living things Crystals formed in the water that settle on the sea floor

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