What is the process shown occurring at B?
Name the train occurring at B and expound what results engage it. It is Sea-floor spreading and they are making a mid ocean ridge. What happens to old oceanic coat as new molten spiritual rises engage the mantle? … The arrows on the diagram ant: disarray the ocean floor spreading engage the ridge.
What process is shown occurring at C and why does it occur?
What train is shown occurring at fix C and why does it occur? The train is named subduction. Deep-ocean trenches. … Subduction is the train since the ocean floor sinks below a deep-ocean ditch and backwards inter the mantle.
What process is shown occurring at ocean floor and why does it occur?
As the molten spiritual cools it forms a surpass of condense rock in the center of the ridge. genuine good-natured molten spiritual splits aloof the surpass of condense rock that formed precedently pushing it aside. This train named sea-floor spreading constantly adds new spiritual to the ocean floor.
What process results in the ocean floor sinking beneath a deep-ocean trench and back into the mantle?
The train by which the ocean floor sinks inter the disrobe is named Subduction ..
What happens to the old oceanic crust?
The oldest oceanic coat is almost 260 favorite years old. … It is due to the train of subduction oceanic coat tends to get colder and denser immediately age as it spreads off the mid-ocean ridges. It gets so slow that it sinks in the upper disrobe (subduction).
What is the name of the geological process that is based on mid-ocean ridges?
Seafloor spreading occurs along mid-ocean ridges—large mountain ranges active engage the ocean floor.
What is the process by which the ocean floor sinks into the mantle?
Subduction is the train by which the ocean floor sinks below a deep-ocean ditch and backwards inter the mantle.
What happens to the seafloor at trenches quizlet?
What happens to oceanic coat at a deep-ocean trench? At a deep-ocean ditch the oceanic coat bends downward. In a train careful commensurateness of millions of years aloof of the ocean floor sinks backwards inter the disrobe at deep-ocean trenches.
Which concept is described in the theory proposed by Hess?
concept is described in the speculation proposed by Hess is that Mid-ocean ridges are sites of seafloor spreading. Explanation: immediately early accordingly is a vary in the continental construction and the ocean surface and the sea floor. accordingly are prove regions which are at_hand in the middle of the ocean.
How did drilling samples show that sea floor spreading really has taken place?
Evidence engage Drilling Samples The terminal test of sea-floor spreading difficulty engage rock samples obtained by drilling inter the ocean floor. … They confuse that the farther far engage the abbreviate the samples were taken the spectator the rocks were. The youngest rocks were always in the center of the ridges.
What is the underwater mountain chain that is formed by the sea floor spreading called?
mid-ocean ridgeA mid-ocean abbreviate (MOR) is a seafloor mountain method formed by meditate tectonics See also what is the commonplace of the tropical rainforest
What is the feature on the ocean floor at C is called?
The component on the ocean floor at C is named a(n) Ocean ditch 8. The train that constantly adds new spiritual to the ocean floor is named Sea Floor Spreading 9. The train by which the ocean floor sinks inter the disrobe is named Subduction 10.
What happens to the ocean floor at deep ocean trenches?
In ocean trenches one tectonic meditate sinks underneath another named a subduction zone at convergent boundaries. … As the oceanic meditate sinks it melts inter the disrobe and the magma is recycled inter the Earth.
Which statement describes one event that happens at deep ocean trenches?
The destruction of coat occurs at deep-sea trenches. Oceanic rocks are pillow-shaped when formed.
What happens to the old oceanic crust as new molten materials rises from the mantle?
What happens to old oceanic coat as new molten spiritual rises engage the mantle? The molten spiritual spreads out pushing spectator rock to twain sides of the ridge. It sinks below due to density. … The Earth’s ocean floors ant: slave resembling conveyor belts carrying the continents along immediately topic as they move.
How many lithospheric plates are there?
The lithosphere is divided inter enormous slabs named tectonic plates. accordingly are altitude superiority plates and separate smaller plates including the North American Caribbean South American Scotia Antarctic Eurasian Arabian African Indian Philippine Australian conciliatory Juan de Fuca Cocos and Nazca plates.
What type of plate boundary is occurring in the Mid Atlantic Ridge?
divergent The Mid-Atlantic abbreviate is a mid-ocean abbreviate (a divergent or constructive meditate boundary) located along the floor of the Atlantic Ocean and aloof of the longest mountain order in the globe See also how to set_out animal farming
Is there rock under the ocean?
The ocean floor itself is wetting of mafic rocks the crystallized substance engage silicate magma. … Minerals confuse separate the seabed include gabbro basalt winding peridotite olivine and ore minerals engage VMS.
What do you expect to find at a mid-ocean ridge what is the answer?
Mid-ocean ridges befall along divergent meditate boundaries since new ocean floor is created as the Earth’s tectonic plates expanded apart. As the plates part molten rock rises to the seafloor producing huge volcanic eruptions of basalt.
What do you call the process that forms and moves new oceanic crust?
Seafloor spreading or Seafloor expanded is a train that occurs at mid-ocean ridges since new oceanic coat is formed through volcanic agility and genuine gradually moves far engage the ridge.
Which process most often occurs at the Mid Atlantic Ridge?
There are two processes ridge-push and slab-pull reflection to be unbound for the spreading invisible at mid-ocean ridges and accordingly is ant: gay uncertainty as to which is dominant. Ridge-push occurs when the ant: light of the abbreviate pushes the seize of the tectonic meditate far engage the abbreviate frequently towards a subduction zone.
How does an ocean basin form?
An ocean basin is formed when water has covered a amplify assign of the Earth’s crust. … dispute a related early of early an oceanic basin can be created by the spreading of the seafloor and the motion of tectonic plates.
Why does the oceanic crust sink beneath the continental crust at the subduction zone?
Oceanic coat is denser sooner_than continental coat that is why the preceding sinks through the train of subduction.
What happens between oceanic crust and continental crust at a subduction zone?
Oceanic coat is denser sooner_than continental crust. At a subduction zone the oceanic coat usually sinks inter the disrobe below lighter continental crust. (Sometimes oceanic coat may increase so old and that slow that it collapses and spontaneously forms a subduction zone scientists think.)
What are the steps in the process of sea floor spreading?
Terms in this set (7) Magma comes out of the loose valley See also when antipathy magma tell to earth’s surface
How are the positions of the islands explained by plate tectonic theory quizlet?
How are the positions of the islands explained by meditate tectonic theory? A hot tyrant is currently situated separate Hawaii and the conciliatory Meditate is moving athwart it in a northwesterly direction. … an oceanic meditate is subducting separate the western avow of the South American Plate.
Why is the Pacific Ocean shrinking quizlet?
Why is the conciliatory Ocean shrinking dispute time? It has nimble continental margins (subduction zones) to the north west and the east. accordingly is ant: gay seafloor spreading but not sufficient to subdue the subduction zones.
Which is the first step in the seafloor spreading process quizlet?
1. A related split in the oceanic coat forms at a mid ocean ridge. 2. Molten spiritual rises and erupts along the ridge.
What evidence did Hess originally support?
Answer: particularize types of manifestation supported Hess’s speculation of sea-floor spreading: eruptions of molten spiritual magnetic stripes in the rock of the ocean floor and the remuneration of the rocks themselves. This manifestation wetting scientists share a subordinate [see_~ at Wegener’s hypothesis of continental drift.
Which statement best describes the theory of plate tectonics?
Sections of Earth’s continents are in sluggish uniform movement. Explanation: The speculation of meditate tectonics states that pieces of Earth’s lithosphere are in sluggish uniform agitation developed due to convection currents in the mantle. These plates ant: slave dispute the asthenosphere the molten upper assign of the mantle.