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The Ocean Floor

The Ocean Floor. OBJECTIVES 1. Describe technologies for studying the ocean floor. 2. Identify the two major regions of the ocean floor. 3. Classify subdivisions and features of the two major regions of the ocean floor. What technologies are used on the Ocean Floor?.

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The Ocean Floor

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  1. The Ocean Floor • OBJECTIVES • 1. Describe technologies for studying the ocean floor. • 2. Identify the two major regions of the ocean floor. • 3. Classify subdivisions and features of the two major regions of the ocean floor.

  2. What technologies are used on the Ocean Floor? • Sonar (sound navigation and ranging)- determines ocean depth by sending out sound impulses and bounces off the floor and the time is calculated to determine depth • Oceanography-Satellite focused on the ocean and send images back to Earth to measure the direction and speed of ocean currents • Geosat- Military satellite that can map the oceans floor.

  3. Revealing the Oceans Floor • Continental Margin is made up of continental crust and deep-ocean basin is made up of oceanic crust

  4. Revealing the Oceans Floor (cont.) • Continental shelf- start at the shore line slopes gently toward the open ocean • Continental slope- Begins at of edge continental shelf continues to flattest part of ocean • Continental rise- base of the continental slope made up of large piles of sediment • Abyssal plain-broad flat part of the deep ocean covered in mud and remains.

  5. Revealing the Oceans Floor (Cont.) • Mid-Ocean Ridges- Mountain chains thqat form where tectonic plate pull apart causes cracks that call rift zones . Magma risescrust expands and forms ridges • Rift valley- between the rift zone as mountains form • Ocean Trenches- Huge cracks in the deep-ocean basin. Form 1 oceanic plate is pushed beneath continental plate or oceanic plate • Seamounts- individual mountains of volcanic material. Magma pushes through plates if to goes above sea-level its called a volcanic island

  6. Assignment • Draw the Ocean Floor (8 points) • Label the ocean floor 8 labels (8 points) • Explain all 8 labels (8 points) • Color your drawing (8 points) • Total 32 points

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