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What is the modern seafloor spreading rate range?
Typical rates of spreading average around 5 centimeter (2 inches) per year.
How do the ages of the rocks on the seafloor support the theory of seafloor spreading?
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.
What kinds of ocean currents might cause seafloor spreading?
Oceanic currents themselves do not directly cause seafloor spreading. Seafloor spreading is primarily driven by tectonic forces, specifically the movement of tectonic plates away from each other at mid-ocean ridges. This movement leads to the upwelling of magma from the mantle, creating new oceanic crust at the spreading center. Ocean currents can affect the distribution of heat and nutrients in the ocean, but they do not play a direct role in the process of seafloor spreading.
How is magnetism used to support the theory about seafloor spreading?
Magnetism is used to support the theory of seafloor spreading through the study of magnetic stripes on the seafloor. These stripes are aligned with the Earth's magnetic field and provide evidence for the process of seafloor spreading, where new oceanic crust is formed at mid-ocean ridges. As the crust cools and solidifies, the magnetic minerals in the rocks align with the Earth's magnetic field, creating a record of magnetic reversals over time that support the theory of seafloor spreading.
Who discovered Seafloor Spreading?
Henry H. hess
What did the magnetic strips prove in seafloor spreading?
They proved that the seafloor was spreading.
How to Diagram the process of seafloor spreading?
A diagram that shows how seafloor spreading works.
Which force is responsible for seafloor spreading?
Gravity in the oceanic crust is responsible for seafloor spreading.
Seafloor spreading begins when?
Seafloor spreading is triggered by a rift in a continental land mass.
Which observation was not instrumenntal in formulating the hypothesis of seafloor spreading?
The observation of the alternating magnetic stripes on the seafloor was instrumental in formulating the hypothesis of seafloor spreading.
What does seafloor spreading have to do with the theory of continental drift?
Seafloor Spreading helped move the Continents to their current location.
What are facts about seafloor spreading?
Seafloor spreading is the process where new oceanic crust is formed through volcanic activity along mid-ocean ridges. It occurs due to the upwelling of magma from the mantle, creating new crust that pushes the existing seafloor apart. The age of the oceanic crust gets progressively older as you move away from the mid-ocean ridge, demonstrating the continual growth of the seafloor.
What seafloor is the process by which new crust is created when seafloor moves apart and magma rises?
Seafloor Spreading
How does evidence that seafloor rocks farther from ridge are older than rocks closer to the ridge support the idea of seafloor spreading?
The evidence that seafloor rocks farther from the mid-ocean ridge are older than those closer to it supports the idea of seafloor spreading by demonstrating that new oceanic crust is created at the ridge and gradually moves outward. As magma rises and solidifies at the ridge, it forms new rock, which pushes the existing rocks away from the ridge over time. This pattern of age distribution aligns with the theory that the ocean floor is continuously being formed and expanded, confirming the dynamic nature of plate tectonics and seafloor spreading.
What is the Site of the seafloor spreading?
how am i suposed to know
Does seafloor spreading hold the plates in place?
No, seafloor spreading does not hold the plates in place. Seafloor spreading is a process that occurs at mid-ocean ridges where new oceanic crust is formed and spreads apart. It is driven by the movement of tectonic plates, which are actually responsible for holding the seafloor in place.
What does magma have to do with seafloor spreading?
When seafloor spreading occurs, it pushes the underground magma up though the new crust, creating a sort of volcano out of the new crust. Magma is a very important part in seafloor spreading. :]
