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In their investigation of Hudson Canyon sediments, students will discover how sediment size is related to the amount of time the sediment is suspended in water. During this activity, students will investigate and analyze the patterns of sedimentation in the Hudson Canyon off the Atlantic coast of North America. They will observe how heavier particles sink faster than finer particles, learn that submarine landslides (trench slope failures) are sediment "avalanches" that occur in deep-ocean canyons, and infer that the passive side of a continental margin is not as geologically static as scientists previously believed. Students will also discover that when sediments such as sand, dirt, silt, and other fine particles become suspended in water by currents, the water becomes murky, or turbid and then may become a turbidity current, which is a down-slope movements of sediment-laden water that continuously erodes many submarine canyons such as the Hudson Canyon.
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