What occurs at plate boundaries that are associated with seafloor spreading quizlet?

What occurs at plate boundaries that are associated with seafloor spreading quizlet?

The thing that occurs at plate boundaries that is associated with sea floor spreading is when the seafloor separates or moves apart, it makes a rift.

Which is associated with seafloor plates moving apart?

Divergent Boundaries — Spreading Plates At divergent boundaries, tectonic plates are moving away from each other. But if these huge masses of crust are moving apart, what happens in the space left between them? Divergent boundaries in the middle of the ocean contribute to seafloor spreading.

Which of the following is associated with the discovery of seafloor spreading?

Harry H. Hess
The seafloor spreading hypothesis was proposed by the American geophysicist Harry H. Hess in 1960.

What are 3 types of evidence for seafloor spreading?

What three types of evidence provided support for the theory of sea floor spreading? eruptions of molten material, magnetic stripes in the rock of the ocean floor, and the ages of the rocks themselves.

What happens at an oceanic ridge quizlet?

A mid-ocean ridge or mid-oceanic ridge is an underwater mountain range, formed by plate tectonics. This uplifting of the ocean floor occurs when convection currents rise in the mantle beneath the oceanic crust and create magma where two tectonic plates meet at a divergent boundary.

How do plate movements form ocean trenches quizlet?

Ocean trenches are deep sections of the ocean where an oceanic plate is usually sinking below a continental plate. They are formed in the subduction zone as the denser oceanic plate is subjected under the continental plate.

What happens when Seafloor spreading occurs?

Seafloor spreading is a geologic process in which tectonic plates—large slabs of Earth’s lithosphere—split apart from each other. The less-dense material rises, often forming a mountain or elevated area of the seafloor. Eventually, the crust cracks.

What is the movement of convergent plate boundaries?

Convergent (Colliding): This occurs when plates move towards each other and collide. When a continental plate meets an oceanic plate, the thinner, denser, and more flexible oceanic plate sinks beneath the thicker, more rigid continental plate. This is called subduction.

What type of plate boundary is occurring in the Mid Atlantic Ridge?

divergent
The Mid-Atlantic Ridge is a mid-ocean ridge (a divergent or constructive plate boundary) located along the floor of the Atlantic Ocean, and part of the longest mountain range in the world.

What is plate tectonics What are the evidences supporting the plate tectonics?

Evidence from fossils, glaciers, and complementary coastlines helps reveal how the plates once fit together. Fossils tell us when and where plants and animals once existed. Some life “rode” on diverging plates, became isolated, and evolved into new species.

What causes this plate to go under the other plate?

Plates Subduct When an ocean plate collides with another ocean plate or with a plate carrying continents, one plate will bend and slide under the other. This process is called subduction. As the subducting plate plunges deep into the mantle, it gets so hot it melts the surrounding rock.

What type of boundary is associated with sea floor spreading?

sea-floor spreading Sea-floor spreading is what happens at the mid-oceanic ridge where a divergent boundary is causing two plates to move away from one another resulting in spreading of the sea floor. As the plates move apart, new material wells up and cools onto the edge of the plates.

What are facts about seafloor spreading?

What Happens During the Process of Seafloor Spreading? History. Scientists originally believed that drifting was an occurrence exclusive to continents through continental drifts. Geographic Features. The process of seafloor spreading leads to the formation of numerous geographical features which can be terrestrial, sub-terrestrial, or marine features. Mid-Ocean Ridges.

What is the theory of seafloor spreading?

The Theory of Seafloor Spreading. Seafloor spreading is a geologic process where there is a gradual addition of new oceanic crust in the ocean floor through a volcanic activity while moving the older rocks away from the mid-oceanic ridge.

What is the evidence for seafloor spreading?

Molten materials and magnetic stripes are the evidence of seafloor spreading. When scientists studied patterns in the rocks of the ocean floor, they found more support for sea-floor spreading.