Detailed Sea Floor Spreading Diagram

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Detailed sea floor spreading diagram.

Review answers to the seafloor structure handout by filling in the diagrams on board or using smartboard. Make sure to draw label an ocean ridge and deep sea trench. Seafloor spreading occurs along mid ocean ridges large mountain ranges rising from the ocean floor. A mechanism for sea floor spreading author.

Another diagram just to make it clearer. A model of sea floor spreading teacher s guide ellen p. Mike rhodes created date. Students will make a paper model illustrating the concept of sea floor spreading and the development of symmetrical magnetic stripes on either side of a mid ocean spreading center.

The mid atlantic ridge for instance separates the north american plate from the eurasian plate and the south american plate from the african plate the east pacific rise is a mid ocean ridge that runs through the eastern pacific ocean and separates the pacific plate from the north american. The red colors are the youngest parts of the seafloor where fresh new crust is formed as lava seeps up from the deep interior of the earth at spreading ridges. Use a 1 2 sheet of paper to answer the station questions and draw a picture of the seafloor. Sea floor spreading early 1960 s harry hess together with robert dietz seafloor spreading theory hot less dense material from below the earth s crust rises towards the surface at the mid ocean ridge material flows sideways carrying the seafloor away from the ridge and creates a crack in the crust magma flows out of the crack cools down.

9 18 2017 4 42 44 pm. Feb 22 2015 station 2. Model of sea floor spreading labeling sea floor spreading diagram quizlet seafloor spreading and plate tectonics model of sea floor spreading. Seafloor spreading this diagram provides evidence of seafloor spreading by showing the ages of ocean floor in the atlantic and eastern pacific oceans.

A more detailed look at spreading along the red sea and east african rift valley arrows show the spreading directions title. Whats people lookup in this blog. These age data also allow the rate of seafloor spreading to be determined and they show that rates. As upwelling of magma continues the plates continue to diverge a process known as seafloor spreading samples collected from the ocean floor show that the age of oceanic crust increases with distance from the spreading centre important evidence in favour of this process.

See more ideas about ocean oceanography earth science. Refer back to the demonstration that you performed during the engage portion of the lesson to demonstrate this. A review of magnetic evidence for sea floor spreading. All 1 250 000 and 1 1000 000 maps are overprinted with the minerals management service s ocs protraction diagram data.

Students work as individuals. Topographic maps of the sea floor produced at a 1 100 000 scale that contain loran c rates bottom sediment types and known bottom obstructions.