0
What else can I help you with?
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.
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.
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
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 that as oceanic crust moves away from the mid-ocean ridge. it cools and becomes more dense?
True.
Is it true oceanic crust moves away from the mid ocean ridge it cools and becomes more dense?
yes
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
How does evidence that rocks farther from a ridge are older than rocks closer to the ridge support the idea of sea floor spreading?
The evidence that rocks farther from a ridge are older than rocks closer to the ridge supports the idea of sea floor spreading because it aligns with the concept of a divergent boundary where new oceanic crust is continuously formed at the ridge and gradually moves away from the ridge over time. This process allows for the creation of age gradients in the oceanic crust, with the youngest rocks found near the ridge and progressively older rocks located farther away.
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
