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As the sea floor spreads, the old ocean floor gets pushed out, which makes the plates move.

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13y ago

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What part of the ocean spreads when old crust melts?

mid-ocean ridge


Is the floor near the mid ocean old?

No. The newest ocean floor is at the mid-ocean ridge.


What happens after magma erupts along mid ocean?

The magma spills over the ridge and pushes the old sea floor away toward a subduction zone where the old sea floor melts.


What if old rocks are rare are on the ocean floor?

It is believed that old rocks are rare on ocean floors bevause the floor has manny remains and we are not unable to reach them


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.


Why are the oldest part of the ocean floor no older then about 200 million years old?

The ocean is 4 billion yars old, however due to subduction, the oldest sediment found in the ocean's floor is 180 million years old.


How old are the oldest of the ocean floor?

Less than 200 Million years old.


About sea floor spreading?

Sea-floor spreading is what happens when the plates in the earth's crust move apart. During this movement of the plates, magma wells up from deep within the earth and fills in the cracks, forming a new oceanic crust, or sea-floor.


Why do you think that old rocks are rare one ocean floor?

There are no rocks on the ocean floor because they turn to sand. The moving of the water gradually wears away at the rocks.


What are the 4 parts of the ocean floor?

Pacific Ocean, Artic Ocean, Atlantic Ocean, and the Indian ocean. im ten years old. that's so easy.


Where dumbo octopuses live?

They live on the ocean floor and right above the floor IM ONLY 9 YEARS OLD


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.