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How are seafloor spreading and continental drift related?
Seafloor spreading is a key component of the theory of continental drift. As new oceanic crust forms at mid-ocean ridges during seafloor spreading, it pushes the existing crust outward on both sides of the ridge. This movement can help explain how continents have shifted positions over time due to the movement of tectonic plates.
What are 3 examples of Pyroclastic debris?
Ash, pumice, and volcanic bombs are examples of pyroclastic debris produced during volcanic eruptions. These materials are fragments of volcanic rock that are ejected during explosive eruptions and can vary in size and composition.
The particles produced in volcanic eruptions are called what?
The pulverized particulates are called ash. Larger chunks of magma are called tephra.
What do pieces of oceanic crust do during sea floor spreading?
During sea floor spreading, pieces of oceanic crust move apart as new magma rises to the surface at mid-ocean ridges. As the crust spreads, it carries with it the magnetic signature of Earth's magnetic field, providing evidence for the process of seafloor spreading.
Did harry hess find the mid-ocean ridge?
Yes, Harry Hess proposed the theory of seafloor spreading and the existence of mid-ocean ridges during the 1960s. His work significantly contributed to the development of the theory of plate tectonics.
What each cycle of spreading and intrusion of magma during seafloor spreading results in?
Taco.
When solid mantle rock rises during seafloor spreading magma is produced as a result of decompression melting?
Yes, during seafloor spreading, when solid mantle rock rises due to plate tectonic forces, it experiences reduced pressure which leads to decompression melting. This process produces magma that eventually erupts onto the seafloor, creating new oceanic crust.
Is the following sentence true or false when solid mantle rock rises during seafloor spreading magma is produced as a result of decompression melting?
True. When solid mantle rock rises during seafloor spreading, the decrease in pressure causes decompression melting, resulting in the production of magma. This magma can then rise to the surface and form new oceanic crust.
How are seafloor spreading and continental drift related?
Seafloor spreading is a key component of the theory of continental drift. As new oceanic crust forms at mid-ocean ridges during seafloor spreading, it pushes the existing crust outward on both sides of the ridge. This movement can help explain how continents have shifted positions over time due to the movement of tectonic plates.
Which was not produced by volcanic out gassing water vapor carbon dioxide sulfur oxygen?
Sulfur is not produced by volcanic outgassing, as it is a solid mineral that can be released during volcanic eruptions but is not a gas emitted directly from volcanoes.
Why did magnetic reversals on the seafloor support seafloor spreading?
Earth got its north and south Pole's have geographic and magnetic north and south poles which makes an angle of nearly 5.6degree. magnetic field created due to core of earth is reversed during each 100 million year period. ie.magnetic north becomes south and vice's. seafloor spreading is a continuous event so for each 100my spread seafloor we get opposite polarised magnetic substances. That is called magnetic reversal
What type of formation is a mid-oceanic ridge?
Its mostly a basaltic formation, caused as a result of ferromagnetic magmatic emergence at zones of seafloor spreading during oceanic-oceanic divergence.
What is the name of the cloud that volcanos make when they erupt?
The cloud of ash, gas, and rock fragments that is produced during a volcanic eruption is called a volcanic plume or eruption cloud.
What term describes fragmental volcanic material?
Fragmental volcanic material is often referred to as pyroclastic or tephra, which includes ash, lapilli, and larger volcanic blocks and bombs produced during explosive volcanic eruptions.
What are 3 examples of Pyroclastic debris?
Ash, pumice, and volcanic bombs are examples of pyroclastic debris produced during volcanic eruptions. These materials are fragments of volcanic rock that are ejected during explosive eruptions and can vary in size and composition.
When was the loudest volcanic explosion and where?
The loudest volcanic explosion in recorded history was one produced during the 1883 eruption of Krakatoa. This volcanic island, which collapsed into the sea after the eruption, was located between Java and Sumatra in Indonesia.
The particles produced in volcanic eruptions are called what?
The pulverized particulates are called ash. Larger chunks of magma are called tephra.
