Lithosphere the crust plus the rigid upper mantle.
Sea floor spreading diagram.
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Lower mantle semi rigid the deepest parts of the mantle just above the core.
Select the letter that is true about the mid ocean ridge.
Seafloor spreading is a process that occurs at mid ocean ridges where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge.
This diagram provides evidence of seafloor spreading by showing the ages of ocean floor in the atlantic and eastern pacific oceans.
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The mid ocean ridge was mapped by sonar b.
Schematic diagram showing the mechanism of seafloor spreading.
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.
Read the definitions below then label the seafloor spreading plate divergence diagram.
The rifting processes coinciding with the onset of a new spreading centre typically start with an upwelling of hot mantle rocks under continental lithosphere the heat leading to uplift and associated erosion.
Figure showing sea floor spreading the intense heat generated by radioactive substances in the mantle beneath the lithosphere seeks a path to escape and forms convection currents.
Seafloor spreading occurs along mid ocean ridges large mountain ranges rising from the ocean floor 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 size of an ocean is determined by how fast is created at a mid ocean ridge.
Sea floor spreading in the early 1960s princeton geologist harry hess proposed the hypothesis of sea floor spreading in which basaltic magma from the mantle rises to create new ocean floor at mid ocean ridges.
Ocean floor diagram worksheet.
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Magma molten rock withing the earth s mantle.
