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Do Ocean sediments become younger or older away from midocean ridges?
Older, as it moves away from the mid-ocean ridge the sediment gets thicker and older
At locations where sea floors spreading occurs rock is moved away from a mid-ocean ridge what replaces the rock as it moves away?
continental crust.
What is a force that is causing the plates to move at a midocean ridge?
friction - convection currents in the mantle drag the plates away from the hot rising zone below the ridgegravity - gravity pulls down on the cold dense plate being subducted under the continent, dragging the plate away from the ridge
Why does the lithosphere thicken away from the ridge crest?
Cooling as rock moves away from the ridge crest causes the rock to become increasingly rigid.
Is it true that as the new seafloor moves away from the ridge and becomes hotter it moves upward and forms still higher ridges?
Yes, it is true. As the new seafloor forms at mid-ocean ridges and moves away, it cools and becomes denser. The denser seafloor sinks lower, creating space for more magma to rise at the ridge, forming still higher ridges.
Is it true oceanic crust moves away from the mid ocean ridge it cools and becomes more dense?
yes
Is it true that as oceanic crust moves away from the mid-ocean ridge. it cools and becomes more dense?
True.
How does the movement of the old and the new crust move in seafloor spreading?
In seafloor spreading, the old crust moves away from the mid-ocean ridge as new crust forms through volcanic activity. This movement is driven by the process of mantle convection, where hotter and less dense material rises at the ridge, pushing the tectonic plates apart. As new crust forms at the ridge, it gradually moves away from the ridge as more magma is added, creating a conveyor belt-like system of crustal movement.
How does the age of seafloor bedrock vary with distance from a mid-ocean ridge?
The age of seafloor bedrock increases with distance from a mid-ocean ridge. At the ridge, the bedrock is young, as it is continuously being formed by volcanic activity. As it moves away from the ridge through the process of seafloor spreading, it cools and ages over time.
Is the oceanic crust near a mid-ocean ridge thicker or thinner than the oceanic crust away from the mid-ocean ridge?
The Oceanic Crust close to the Mid Ocean Ridge is thinner than that Oceanic Crust far away from the ridge. This is due to tensional forces, as a result of crustal expansion and rock fracturing during the formation of the ridge.the oceanic crust is thinner
What is the relationship between the age of rocks on the ocean floor and their distance from the mid ocean ridge?
The age of rocks on the ocean floor increases with distance from the mid-ocean ridge. This is due to the process of seafloor spreading, where new crust is formed at the ridge and then gradually moves away as tectonic plates shift. As a result, rocks closest to the ridge are younger, while those farther away are older, providing evidence for the theory of plate tectonics.
Where is active seafloor spreading occurring today?
At any divergent plate margin: The Mid-Atlantic Ridge The boundary between the African Plate and Arabian Plate (the Red Sea) Great Rift Valley West Antarctic Rift East Pacific Rise Pacific-Antarctic Ridge Galapagos Rise Gakkel Ridge
