The Key To Sea Floor Spreading

Molten rock pushes up from the asthenosphere and pushes the plates apart at the mid ocean r.

The key to sea floor spreading. A chain of underwater mountains along which sea floor spreading occurs is a mid ocean ridge. Displaying top 8 worksheets found for sea floor spreading answer key. The formation of the new crust is due to the rising of the molten material magma from the mantle by convection current. The process of sea floor spreading.

Similar to wegener s theory that continents do in fact move hess seafloor spreading contradicted wegener s continental drift in that it involved the ocean sea floor moving as it expanded instead of continents ploughing through the sea. It is an underwater mountain range that forms when magma pushes up on the crust at a divergent boundary. The feature on the ocean floor at c is called a n ocean trench 8. The process by which the ocean floor sinks into the mantle is called subduction 10.

Seafloor spreading is happening at b. The process that continually adds new material to the ocean floor is called sea floor spreading 9. See also continental drift a veritable legion of evidence supports the seafloor spreading hypothesis. The oceanic crust is composed of rocks that move away from the ridge as new crust is being formed.

Sea floor spreading answer key this is a mid ocean ridge. Seafloor spreading occurs along mid ocean ridges large mountain ranges rising from the ocean floor. Molten rock pushes up from the asthenosphere and pushes the plates apart at the mid ocean r. Vine matthews morley hypothesis the first key scientific test of the seafloor spreading theory of continental drift and plate tectonics.

Wikimedia commons has media related to sea floor spreading. Divergent boundary linear feature that exists between two tectonic plates that are moving away from each other. Wherever continents are bordered by deep sea trench systems as in the pacific ocean the ocean floor is plunged downward underthrusting the continents and ultimately reentering and dissolving in earth s mantle from which it had originated. It is an underwater mountain range that forms when magma pushes up on the crust at a divergent boundary.

Some of the worksheets for this concept are sea floor spreading work inside earth work name date sea floor spreading l 1 2 3 a model of seafloor spreading sea floor spreading sea floor spreading modeling sea floor spreading chapter 8 plate tectonics. Seafloor spreading is happening at b. Sea floor spreading answer key this is a mid ocean ridge.