The hot materials like magma goes up and the cool materials like water goes down . As all magma cools, it became land because it was cooled by water but other magma goes down on and goes back to the flow. The way of the magma goes bigger and water comes in (what we called trench) and causes the seafloor spreading.
convection currents in the mantle.
Ocean currents have no effect whatsoever. Seafloor spreading is caused by convection currents in the rock of the earth's mantle.
The Asthenosphere, a.k.a. the Plastic Mantle.
Yes, more specifically the Plastic Mantle (also called the Asthenosphere).
Seafloor-spreading is the cause of continental drift
it started off from alfred wegner's theory of continental drift . basically seafloor spreading cause it . new seafloor was pushed upward through crevices .
A man by the name of Harry Hess invented seafloor spreading. He invented seafloor spreading in the year of 1960.
They proved that the seafloor was spreading.
the secret of seafloor spreaeding is nothing it is just plain old seafloor spreading
convection currents make the rock benethe the surface warmer and less dense therefore causing the rock to rise to the surface
His theory was to figure out what was seafloor spreading
Yes sea floor spreading and or undersea volcanic eruptions can cause a tsunami or huge ocean wave.
Seafloor spreading starts as a rift in a land mass.
Gravity in the oceanic crust is responsible for seafloor spreading.
Seafloor spreading is triggered by a rift in a continental land mass.
The Seafloor Spreading Theory was proposed by Harry Hess.
New oceanic crust is being created at seafloor spreading zones, and crust is alternately being subducted and destroyed at subduction zones.
The typical rates of seafloor spreading is 5 centimeters per year. Seafloor spreading is a process that occurs at mid ocean ridges.
its not happy
In the 1960s, Harry Hess proposed a theory he called seafloor spreading.
Mid-ocean ridges are results of seafloor spreading.
A lot, but the basic answer is movement of the earths crust. It directly causes the Continental drift, seafloor spreading, earthquakes and volcanoes. It indirectly causes a host of other geographical features.