The formation of the new crust is due to the rising of the molten material magma from the mantle by convection current.
Labeled sea floor spreading diagram.
A mechanism for sea floor spreading.
5 with a pair of scissors cut the vertical lines so there will be three slits on the paper all the same height and parallel to each other.
Read the definitions below then label the seafloor spreading plate divergence diagram.
When you are finished your piece of paper should look like the diagram in figure 1.
Refer back to the demonstration that you performed during the engage portion of the lesson to demonstrate this.
Label the mid ocean ridge and subduction zones.
The oceanic crust is composed of rocks that move away from the ridge as new crust is being formed.
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Lower mantle semi rigid the deepest parts of the mantle just above the core.
To reinforce the slits.
The process is continuous because forces cause opposite sides of the midocean ridge to constantly move apart making new room for the process to repeat.
A review of magnetic evidence for sea floor spreading.
In seafloor spreading.
Magma molten rock withing the earth s mantle.
Lithosphere the crust plus the rigid upper mantle.
Labeled diagram of seafloor spreading.
Another diagram just to make it clearer.
Start by looking at the diagram on the left.
The process of sea floor spreading.
The mid ocean ridge is the region where new oceanic crust is created.
Explain that seafloor spreading and movement is a cyclical process because it is constantly being created and destroyed.
Review answers to the seafloor structure handout by filling in the diagrams on board or using smartboard.
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Side view of earth layers from crust to core.
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Model of sea floor spreading labeling sea floor spreading diagram quizlet seafloor spreading and plate tectonics model of sea floor spreading.
Sea floor spreading in the early 1960s.
The diagram on the right is a close up view of the upper 700 km about 450 miles of the earth.