Answer:
Mid ocean ridge are where new crustal material is forced to the surface. The new crustal material is pushed apart forming two different plates moving in two different directions. An ocean trench is where old crustal material is pushed under another plate where it is melted and turned into magma.
Answer:
The closer the rocks are to the mid-ocean ridge the younger they are, and the further away they are the older they are.
Explanation:
The ocean floor gives us one of the best if not the best evidence for the movement of tectonic plates, and definitely the best when it comes to ocean floor spreading. When the convection currents are stronger at parts, they manage to break up tectonic plates, moving them apart, and gradually forming an ocean.
The magma that is pushed through the gap is quickly cooling off and solidifies into a new rock on the ocean floor. Because magma keeps coming constantly for millions of years, the new rock that forms constantly pushes away the preexisting rock. This leads to a situation where the youngest rocks are always found at the mid-ocean ridge because it is there where they form. The further a rock is from the mid-ocean ridge the older it is. The oldest rocks are found at the edges of plate boundaries that are on the opposite sides of the mid-ocean ridge, and they often tend to be a subject of subduction.
A kind of rock that arises from the transformation of exciting rock types
Answer:
The watershed simply restricts the movement of water toward one side, because the water can not move up but only down or on a flat area.
Explanation:
The watersheds represent physical boundaries that are separating the flow of water to rivers, seas, areas, or to put it simply, they direct the movement of water in different directions. The watersheds are marked by landforms that are at a higher elevation than their surroundings, and the separation of the movement of water occurs at the ridges.
Basically, the water moves downward on each side of the ridge. This means that the water on one side of the ridge belongs to one watershed as its waters go in one direction and area, while the water on the other side of the ridge belongs to another watershed because its waters move in another direction and area.
These are the land formation associated with the fault processes.
Block mountains- this is a raided highland,fault bordered block which occur due to raising up of block during faulting. Uplifted or raised block may be tilted to form tilted block or may be horizontal to form Horst. example of block mountains include mountain such as black forest in German and Ruwenzori in Uganda.
Rift valley it is major landforms , resulting from the lowering of relatively narrow strip of rock between parallel faults. The most impressive rift valley system in the world is the great rift valley of Africa which extend for over 7600 km from near to Beira in Mozambique to gulf of Aquaba into Jordan.. rift valley can be formed by both tension and compression forces.
Fault steps-these form when a series of parallel faults develop in the region and land between these faults is uplifted at different levels.the land scape forms a series of fault scarp that looks like steps. a good example can be seen at Kijabe west of Nairobi and the Malawi rift
Basin and plateaus- These features result from warping o the earths crust. Uplifted areas due to wraping which have high level or undulating landforms is called plateaus while depressed areas forms basins. Examples of plateaus and basins include lake Victoria basin in east Africa Deccan plateau and Bolivian plateau
