The trenches catch most of the sediment from the plates that break up and sink deeper into the water. This causes the upper plates to grow.
It falls and break
Basalts
Molten rock that flows onto the seafloor and hardens as it cools is called basalt. Basalt is the most common type of lava erupted at mid-ocean ridges and forms the oceanic crust.
Paleomagnetic patterns on the seafloor are caused by the movement of tectonic plates. As the seafloor spreads at mid-ocean ridges, molten rock solidifies to form new crust containing minerals aligned with the Earth's magnetic field. Over time, Earth's magnetic field reverses, leaving a record of these changes in the seafloor's magnetic stripes.
At plate boundaries associated with seafloor spreading, two tectonic plates move away from each other, creating new oceanic crust between them. Magma rises to the surface, solidifies, and forms mid-ocean ridges. This process contributes to the widening of ocean basins and the continuous movement of Earth's lithosphere.
it turns into sediment
It turns into rock.
Age of seafloor rock and sediment increases with distance from the oceanic ridges.
It will be an igneous rock
Continental plates are massively granitic rock, oceanic plates massively basaltic rock, therefore continental rock is less dense than seafloor rock and has a different chemical and mineralogical composition.
they are pushed down
erosion
It falls and break
Yes. What happens is when the lava cools down, it turns into rock.
Erosion/gathering which generates sand.
The ages of the rocks become older the farther the way they are from the ridges. The closer they are the younger it is. This leaves evidence to the seafloor spreading theory.
Seafloor Cavern. To get there you need surf and dive, and once in there you will need strength and rock smash. Seafloor Cavern can be found underwater in route 128.