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New oceanic crust is being created at seafloor spreading zones, and crust is alternately being subducted and destroyed at subduction zones.
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∙ 15y ago
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What kinds of ocean currents might cause seafloor spreading?
Ocean currents have no effect whatsoever. Seafloor spreading is caused by convection currents in the rock of the earth's mantle.
In which earth layer are most convection currents that cause seafloor spreading thought to be located?
The Asthenosphere, a.k.a. the Plastic Mantle.
What is the primary force that cause the seafloor to spread and continental to drift?
Contintal plates
Why aren't ancient rocks found on the seafloor?
Because of erosion, or because of sea floor spreading. Sea floor spreading would be the cause of it because it moves the rock to a submerging area and the mantle's hot "body" melts it. Now erosion would be part of it because it erodes the rock away, leaving sand or dirt from that rock. If they were looking for ancient sand, then they would most definitely find it.
What does the seafloor spreading theory states?
The theory of seafloor spreading was proposed by Harry H. Hess, an American geophysicist, in 1960. According to Hess, seafloor spreading is where two tectonic plates move apart and the ocean floor spreads out. When two tectonic plates spread apart they break. Magma then forces its way up through the cracks in an underwater volcano. When the magma hits the water, it cools and forms ridges along the plates that are pulling apart. In a normal volcano, the magma would pour down the sides and build up, but the since the plates are pulling apart underwater, the magma is more like forming a bridge. However, this bridge has valleys and mountains and is known as an oceanic ridge. The material being formed is known as constructive because a new ocean floor is actually being formed as a result of the process.
How does seafloor spearing and continental drift link together?
Seafloor-spreading is the cause of continental drift
What kinds of ocean currents might cause seafloor spreading?
Ocean currents have no effect whatsoever. Seafloor spreading is caused by convection currents in the rock of the earth's mantle.
Can seafloor spreading cause a tsunami?
Yes sea floor spreading and or undersea volcanic eruptions can cause a tsunami or huge ocean wave.
What layer produces the magma that cause seafloor spreading and volcanoes?
the upper mantle
What cause ocean ridges to form?
earths crust causes it
In which earth layer are most convection currents that cause seafloor spreading thought to be located?
The Asthenosphere, a.k.a. the Plastic Mantle.
How might geologic events such as the movement of tectonic plates affect the environment where species live?
Movement of tectonic plates can cause seafloor spreading and reversal of Earth's magnetic field, which can affect the organisms that are not adapted to the geological enviroment.
Does the seafloor cause more or less land?
more
What might scientists now think might be a possible cause of continental drifts?
They think a possible cause of continental drift is because of seafloor spreading and the water currents below the continents. +++ You are sort of on the right track, but not near enough to have helped the 9 people Answers had already counted! Sea-floor spreading is part of continental drift, and the currents are not in water, but in the viscous rock Mantle.
What do scientist think now might be possible cause of continental drift?
They think a possible cause of continental drift is because of seafloor spreading and the water currents below the continents. +++ You are sort of on the right track, but not near enough to have helped the 9 people Answers had already counted! Sea-floor spreading is part of continental drift, and the currents are not in water, but in the viscous rock Mantle.
Can global warming be cause from the earths core?
No the earths core is not a cause of globel worming
What is the primary force that cause the seafloor to spread and continental to drift?
Contintal plates
