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What pushes up through rifts in the ocean floor and cools to form new sea floor?
Wiki User
∙ 13y ago
sea floor spreading, boo. it's molten rockk from earth's coree. hope it helpped!! :)
Wiki User
∙ 13y ago
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When magma rises up through the sea floor rifts and cools to form ocean floor?
yes
What are the 4 steps of seafloor spreading?
I'm not that sure since I am doing a science assignment on seafloor spreading but, I think I've got a pretty good grasp on 5 stepsMagma pushes up through the Earth's mantle and breaks through the crust.Magma flows outward in the ocean in all directions and hardens to form new ocean floor by the ridge.New ocean floor pushes the old floor away from the mid-ocean ridgeThe old floor then pushes the continents away from the ridgeLastly, the old ocean floor is forced under the continental plate, and melts back into magma.I'm not that sure but, I think I've got a pretty good grasp on 5 stepsMagma pushes up through the Earth's mantle and breaks through the crust.Magma flows outward in the ocean in all directions and hardens to form new ocean floor by the ridge.New ocean floor pushes the old floor away from the mid-ocean ridgeThe old floor then pushes the continents away from the ridgeLastly, the old ocean floor is forced under the continental plate, and melts back into magma.
Sea-floor spreading is a valuable theory as it relates to plate tectonics because why?
the spread of the ocean floor pushes the lithospheric plates around.
What happens to magma after it erupts onto the ocean floor?
The magma spills over the ridge and pushes the old sea floor away toward a subduction zone where the old sea floor melts.
What is the name of the rocks that are made when the lava pours onto the ocean floor and cools?
Conglomerate rock
Why is the ocean floor lower as you move away from the mid-ocan ridges?
The mid-ocean ridges which wrap around the ocean floor like the seam of a baseball, are high topographic features-but as you go away from either side of a ridge, the ocean floor subsides as it cools.
The primary source that causes the seafloor to spread and continents to drift?
In the middle of the ocean is a rift where the ocean floor squeezes out lava and pushes the ocean plates apart.
Seafloor spreading occurs because?
Because as the sea-floor spreads apart, magma is forced upward and flows from the cracks. It becomes solid as it cools and forms new sea-floor. As new sea-floor moves away from the mid-ocean ridge, it cools, contracts, and becomes denser.
How is valley similar to an ocean trench?
in a way, they are both part of the process called sea floor spreading. the trench is where the ocean floor is subducted and the rift valley is where the molten material comes up and cools.
Why is the Atlantic Ocean continuously expending?
There is a rift down the center that pushes the ocean floor outward, expanding the ocean continuously. The rift is life a long volcano spewing out lava.
What are the youngest rocks on the ocean floor?
those located at the fault in the bottom of the ocean because it is a volcano and produces new rock everytime the lava cools.
Does the island of Hawaii experience volcanism because it is located above the mid pacific ridge?
No. The Island of Hawaii is located above a Hot Spot on the floor of the Pacific Ocean. That is a place where a plume of lava breaks through the floor of the Pacific ocean and pushes up mountains. The Pacific Ocean has other such Hot Spots. None are a big as that underneath the big island of Hawaii.
