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Sea-floor spreading is what happens when the plates in the earth's crust move apart. During this movement of the plates, magma wells up from deep within the earth and fills in the cracks, forming a new oceanic crust, or sea-floor.
Wiki User
∙ 14y ago
Wiki User
∙ 11y agoThe spreading starts at the mid-ocean range and the crust spreads and make changes as it move along the way.
Wiki User
∙ 11y agoHeat transfer by the heating and cooling of a fluid, change in its density, and the force of gravity combine to set it in motion.
Wiki User
∙ 6y agoSea-floor spreading creates new oceanic crust at mid-ocean ridges. Subduction destroys old oceanic crust at subduction zones.
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What is the primary site for sea floor spreading?
Sea floor spreading occurs at mid-ocean ridges
What is the key to understanding continental drift?
sea floor spreading
What three pieces of evidence for Wegener's theory came from the sea floor?
seafloor spreading, age of the sea floor and ocean trenches.
What do scientist think caused Continental drift?
Sea-floor spreading
Identify how magnetic symmetry can be used as evidence of sea floor spreading?
As the sea floor spreads the magnetic orientation in the rocks as they cooled is preserved. As the earth's magnetic field changes then a distinct pattern is imprinted in the rocks. If sea floor spreading is true then this unique pattern should be the same on both sides from the spreading point. Measurements of sea bottom rocks verify this symmetry is true. :)
The process by which molten material adds new oceanic crust to the ocean floor?
DA ANSWER ISseafloor spreadingThe_process_by_which_molten_material_adds_new_oceanic_crust_to_the_ocean_floor_is_calledThe_process_by_which_molten_material_adds_new_oceanic_crust_to_the_ocean_floor_is_called
What is a spreading center on the ocean floor?
sea floor-spreading..;)
Where sea floor spreading occurs?
Sea floor spreading occurs at the mid ocean ridges.
Where does sea floor spreading occur?
Sea floor spreading occurs at mid-ocean ridges.
What is the primary site for sea floor spreading?
Sea floor spreading occurs at mid-ocean ridges
How do you use sea-floor spreading in a sentence?
The Super Continent was broken apart, in part by sea-floor spreading.Scientists discovered that sea-floor spreading continues to move the continents.Sea-floor spreading can be measured using specialized equipment.
Why did arthur Holmes think the sea floor was spreading?
Spreading Of ocean floor
Process in which new sea floor forms as older sea floor is pulled apart?
sea-floor spreading
How far is the sea floor spreading?
the sea floor is spreading about 3cm every year answers will vary but it is usually around 3cm
What did geologists of the late 1700's conclude about Earth's landforms?
that it caused sea floor spreading
What is a good sentence for sea floor spreading?
Sea floor spreading mean the process by which molten material adds new oceanic crust to the ocean floor
What forces sea floor spreading?
Sea floor spreading is caused by convection currents in the mantle to cause a divergent boundary underwater. When the divergent boundary spreads, it caues a mid-ocean ridge. This is sea-floor spreading. Hope I helped!
