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As the volcanic material moves away from the Mid Ocean Ridge, it cools (which makes it denser); it forms the large 'Giants Causeway" type of polygon rock forms; once it has passed through the Curie point, it preserves a record of the magnetic field as is was when the rock cools.
What else can I help you with?
What part of the ocean spreads when old crust melts?
mid-ocean ridge
What happens to the old ocean floor as the sea floor spreads?
As the sea floor spreads, the old ocean floor gets pushed out, which makes the plates move.
Why is the Atlantic Ocean is spreading?
The oceanic crust of the Atlantic Ocean floor is attached to the continental crust of the continents around the ocean. So as the Atlantic's Ocean floor spreads, the continents along its edges also move. Over time, the whole ocean gets wider.
Why are the continents and the ocean floors moving?
Contienental drift, which is when under the surface magma spreads apart and streches the crust apart.
What happens when a fire spreads in the ocean?
it is imposable a fire can't even start in fire, there for a fire CAN'T spread in a ocean.
What happens when the continental crust is over the ocean floor?
because 0ness
What happens when th ocean crust melts in the mantle?
it makes more magma.
Where does new crust come from in sea-floor spreading?
The ocean floors are crustal plates and move, carrying the continents along with them. This movement begins at a mid-ocean ridge. A ridge forms along a crack in the oceanic crust, where molten material is heated by the mantle and erupts. In this process, called sea-floor spreading, the sea floor spreads apart along both sides of a mid-ocean ridge as new crust is added. As a result, the ocean floors move like conveyor belts, carrying the continents along with them.
The youngest rocks on the ocean floor are located?
The youngest rocks on the ocean floor are located at mid-ocean ridges, where new oceanic crust is formed through volcanic activity. As the crust spreads away from the ridge, it gets progressively older. This process is known as seafloor spreading.
What happens at hydrothermal vents?
Seawater seeps into the ocean floor through cracks in the crust
Where is ocean floor created?
Ocean floor is primarily created at mid-ocean ridges where tectonic plates move apart, allowing magma to rise from the mantle and solidify as new oceanic crust. This process, known as seafloor spreading, results in the formation of new crust that eventually spreads away from the ridge and contributes to the growth of the ocean floor.
Describe how seafloor spreading helps to explain the continental drift theory?
Seafloor spreading occurs at mid-ocean ridges, where new oceanic crust is created and spreads outward from the ridge. As the crust spreads, it forces older crust away from the ridge, creating a conveyor belt-like movement of the ocean floor. This process provides evidence for the movement of continents over time, supporting the theory of continental drift proposed by Alfred Wegener.
