Which is one piece of evidence of seafloor spreading quizlet?
What is the evidence for sea-floor spreading? Several types of evidence supported Hess's 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.
Which is one piece of evidence of seafloor spreading Quizizz?
What is one piece of evidence of seafloor spreading? The age of the oceanic crust gets older the further you go from a mid-ocean ridge.
What are 3 types of evidence for seafloor spreading?
The pieces of evidence gathered for sea-floor spreading include the evidence from molten material, magnetic stripes, and drilling samples.
Which is one piece of evidence of seafloor spreading Brainly?
One piece of evidence of seafloor spreading is a mid-ocean ridge. Explanation: The Mid-Atlantic Ridge is a mountain system formed by plate tectonics on the seafloor.
What causes seafloor spreading quizlet?
During sea-floor spreading, magma erupts along a mid-ocean ridge to form new oceanic lithosphere. The floor then moves away from the ridge, often toward a trench at the edge of the ocean basin. List the evidence for sea-flooring spreading.
What is seafloor spreading Quizizz?
What is Sea-Floor Spreading? Mid-Ocean ridges continually add new material to the ocean floor. Mid-Ocean trenches continually add new material to the ocean floor.
Which of the following is the single best evidence in support of the concept of seafloor spreading?
Evidence of Magnetic stripes It was the greatest support of sea fall spreading.
What evidence supports Hess’s theory of seafloor spreading?
Sea floor continues to spread apart as new crust is added. Processes repeats like a conveyor belt, carrying continents along with them. Evidence supported Hess's 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 usually causes seafloor spreading?
Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle's convection currents makes the crust more plastic and less dense. The less-dense material rises, often forming a mountain or elevated area of the seafloor.
What is seafloor 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.
Where does seafloor spreading occur quiz?
Sea floor spreading occurs at the divergent plate boundaries.
Where would seafloor spreading most likely occur?
Seafloor spreading is a phenomenon that occurs at mid-oceanic ridges, such as the Mid-Atlantic Ridge.
What constitutes the strongest evidence in support of seafloor?
When the Earth's magnetic field reverses, a new stripe, with the new polarity, begins. Such magnetic patterns led to recognition of the occurrence of sea-floor spreading, and they remain some of the strongest evidence for the theory of plate tectonics.
What are the main features of the seafloor?
There are nine main features of the ocean floor which include (1) continental shelf, (2) continental slope, (3) continental rise, (4) abyssal plains, (5) abyssal hill, (6) mid-ocean ridges, (7) seamounts, (8) deep ocean trenches, and (9) volcanic islands.
Which of the following best describes seafloor spreading?
New oceanic crust is formed at mid ocean ridges, pushed away from the ridge, and destroyed at deep-sea trenches is the correct statement (Option B) Explanation: Seafloor spreading is a process that occurs at the mid ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away …
What are the features of seafloor spreading?
Seafloor spreading produces major characteristics of the seafloor – 1) the age of the seafloor is progressively older away from midocean ridges, 2) the elevation of the seafloor is progressively lower away from midocean ridges, 3) the magnetic history of the seafloor bears the striped-pattern of the Earth's magnetic …
How does seafloor spreading occur quizlet?
What is seafloor spreading? The process of molten material from the mantle being pushed upward to the surface of the earth and spreading apart creating new earth. Where does seafloor spreading occur? This process occurs along divergent plate boundaries at areas called mid-ocean ridges.
Which of the following is a result of seafloor spreading?
Seafloor spreading creates new crust. Subduction destroys old crust. The two forces roughly balance each other, so the shape and diameter of the Earth remain constant.
Which feature is most common one on the ocean floor?
Abyssal plains Abyssal plains are the most common land feature on planet earth. They make up half of all of the ocean floor.
What is happening during seafloor 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.
Which findings support seafloor spreading theory?
Supporting Evidence for Seafloor Spreading First, samples of the deep ocean floor show that basaltic oceanic crust and overlying sediment become progressively younger as the mid-ocean ridge is approached, and the sediment cover is thinner near the ridge.
What are the 2 pieces of evidence to support seafloor spreading?
Several types of evidence from the oceans supported Hess's theory of sea-floor spreading-evidence from molten material, magnetic stripes, and drilling samples. This evidence also led sci- entists to look again at Wegener's theory of continental drift.
What causes seafloor 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.