it is caused by convection currents
they are related because they all have to do with the oceanic lithosphere.The convection causes the lithosphere to move sideways and away from the midocean ridges.The ridge push makes the oceanic lithosphere slide downhill under the force of gravity. The slab pull:the old lithosphere is denser than asthenosphere so, the edge of the tectonic plates that contains oceanic lithosphere sinks and plls the rest of the tectonic plate.
they are related because they all have to do with the oceanic lithosphere.The convection causes the lithosphere to move sideways and away from the midocean ridges.The ridge push makes the oceanic lithosphere slide downhill under the force of gravity. The slab pull:the old lithosphere is denser than asthenosphere so, the edge of the tectonic plates that contains oceanic lithosphere sinks and plls the rest of the tectonic plate.
Oceanic lithosphere gets older as it moves away from the mid-ocean ridges where new lithosphere is formed. This process, known as seafloor spreading, causes older lithosphere to be pushed further from the ridge, resulting in a gradient of lithosphere age with the oldest being farthest from the ridges.
One of the midocean ridges is, but others are in other oceans, seas, and bays.
As the oceanic lithosphere moves away from a mid-ocean ridge, it cools and thickens. This process causes the ocean floor to become older and denser, resulting in its gradual subsidence. The farther it gets from the ridge, the deeper the ocean floor becomes due to the increased thickness and weight of the lithosphere.
the bottom
the bottom
it is known as sea floor spreading. this is when the oceanic plates diverge or move apart which causes the magma from the mantle to rise forming new sea floor.
When divergence occurs in the oceanic lithosphere, it leads to the formation of mid-ocean ridges where new crust is created as magma rises from the mantle and solidifies. This process is responsible for the spreading of the ocean floor and the formation of new oceanic crust.
As the lithosphere cools, asthenosphere's hot rocks freeze onto their undersides. So lithosphere becomes thicker. As time goes on or within the time period of 10 million years, it even becomes thicker than asthenosphere.
New oceanic lithosphere forms as a result of seafloor spreading at mid-ocean ridges. Magma rises from the mantle, solidifies at the mid-ocean ridge, and creates new oceanic crust. This process leads to the continuous expansion of the ocean floor.
A mid-ocean ridge is where magma pushes up on oceanic lithosphere, creating new oceanic crust as the magma solidifies. The heat from the magma causes the lithosphere to rise and spread apart, resulting in seafloor spreading. This process is fundamental in plate tectonics theory.