Seafloor spreading theory that oceanic crust forms along submarine mountain zones and spreads out laterally away from them.
Sea floor spreading quizlet.
As the ocean seafloor spreads the newly formed floor will adapt a specific magnetic signature according to the earth s magnetic pole at that time.
Sea floor spreading occurs when the sea floor spreads apart along divergent boundries and forms the mid ocean ridge.
As years pass lateral segments of seafloor will thus share the same.
This idea played a pivotal role in the development of the theory of plate tectonics which revolutionized geologic thought during the last quarter of the 20th century.
The oceanic crust is composed of rocks that move away from the ridge as new crust is being formed.
Ocean floor eventually settles back into the mantle at the subduction zone.
The mid ocean ridge is the region where new oceanic crust is created.
Along the edges of all the continents.
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In sea floor spreading molten material rises from the mantle and erupts.
The questions in this online quiz will test you on some facts about sea floor spreading.
As a result the ocean floors move like conveyor belts carrying the continents along with them.
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Click card to see definition in sea floor spreading the sea floor spreads apart along both sides of a mid ocean ridge as new crust is added.
The process of sea floor spreading.
At the north and south poles.
3 ocean floor moves away from the ridge 4.
In sea floor spreading the sea floor spreads apart along both sides of a mid ocean ridge as new crust is added.
The sequence of sea floor spreading is 1.
As a result the ocean floors move like conveyor belts carrying the continents along with them.
Click again to see term 1 21.
Magma cools to form new ocean floor.
The formation of the new crust is due to the rising of the molten material magma from the mantle by convection current.
Magma is pushed up though cracks in the crust along the mid ocean ridge as the magma is thrust up and hardens it forms new crust and the ocean floor on both sides and hardens it forms new crust and the ocean floor on both sides of the mid ocean ridge.
A 3 inches b 30 meters c 30 inches d 3 cm e 30 cm.
Magma from the asthenosphere fills cracks in the ocean crust along mid ocean ridges.
