16 Which of the Following Correctly Describes Seafloor Spreading

The East Pacific Rise is a mid-ocean ridge that runs through the eastern Pacific Ocean and separates the. Spreading center continentalocean convergent transform.

Sea Floor Spreading An Overview Sciencedirect Topics

Answer the following question.

. C evidence for earthquakes and volcanism along the mid-ocean ridge axis. Sea floor spreading B. Seafloor spreading theory that oceanic crust forms along submarine mountain zones known collectively as the mid-ocean ridge system and spreads out laterally away from them.

Spreading rate is the rate at which an ocean basin widens due to seafloor spreading. Sea floor spreading and tidal theory D. Magma fills the gap that is created.

As a general rule fast ridges have spreading opening. D change in the temperature of ocean water. Melted rocks have hardened again and again at mid-ocean ridges.

Tuzo Wilson combined the continental drift and seafloor spreading hypotheses to propose the theory of plate tectonics. Tuzo said that Earths crust or lithosphere was divided into large rigid pieces called plates. This Assessment will cover the concepts essential questions and vocabulary covered in the Plate Tectonics Unit.

The magma moves up from the mantle and erupts as pillow lava. Seafloor spreading definition a process in which new ocean floor is created as molten material from the earths mantle rises in margins between plates or ridges and spreads out. What is the importance of seafloor spreading to the theory of plate tectonics.

Geology the Environment and the Universe. Farther from the midoceanic. Geologists that the outrageous hypothesis of seafloor spreading was correct.

Friday September 4 2020. Scientists gradually amassed additional data that would resurrect Wegeners hypothesis in the 30 years following his death. The question expects us to explain what sea floor spreading is the evidences that led to the acceptance of this theory by Hess and how the movement of seafloor leads to earthquakes and volcanoes.

A the elevated topography of mid-ocean ridges. Magma is forced upward toward the crust. C local tectonically induced vertical motions of the crust.

This idea played a pivotal role in the development of the theory of plate tectonics which revolutionized geologic thought during the last quarter of the 20th century. Seafloor spreading occurs along mid-ocean ridgeslarge mountain ranges rising from the ocean floor. B change in the rate of seafloor spreading which produces a change in the volume of the ocean basins.

Awhere new crust is created as plates move and pull apart B where many fossils have been found on the sea floor Cwhere coal deposits have been found connect to other plates Dwhere glacial deposits indicate it was once frozen. The crust eventually subducts at the deep ocean trench and melt back into the mantle. But the continents actually are shifting very slowly relative to one.

Each layer is a spherical shell that holds something different from the other and as one goes deeper the hotter it becomes. Arrange the following according to the correct sequence in the process of seafloor spreading. Structure of the answer.

From a structural standpoint the continents consist of a lithosphere and asthenosphere b cratons and mobile belts. After all its not as if an airplane flight between Europe and Africa takes five hours one year but only three hours the next. Most basalt magmas contain abundant molten iron.

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. Magma hardens to form new ocean crust. Continental Drift versus Plate Tectonics.

The silica could have come from. Big Bang theory ____16. Put numbers 1-5 on the blank.

As magma starts to harden into rock iron-rich minerals solidify first. Seafloor spreading helps in explaining the continental drift. 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 from the ridge and then are destroyed at the deep sea trenches.

By the 1960s the building blocks were in place to. Convergent where plates collide divergent where plates separate and transform motion where plates simply slide past each other. There are three types of plate-plate interactions based upon relative motion.

Science Earth Science QA Library B. The Mid-Atlantic Ridge for instance separates the North American plate from the Eurasian plate and the South American plate from the African plate. D magnetic stripes on the seafloor that were symmetrical on either side of the.

Earth Structure MCQ Test. Sea floor spreading and continental drift C. FONTS 172 Questions Describe the topography of the seafloor.

Volcanic debris life forms in the ocean neither of these is correct the first two answers are correct. Briefly explain the theory of plate tectonics. The rate at which new oceanic lithosphere is added to each tectonic plate on either side of a mid-ocean ridge is the spreading half-rate and is equal to half of the spreading rate.

Explain how ocean-floor rocks and sediments provided evidence of seafloor spreading It has deep trenches and high ridges. These plates float atop an underlying rock layer called the asthenosphere. Use your textbook and the ideas on page 18.

At ocean ridges are the longest mountain chains on Earths surface. The earth is made up of different layers with each have a composition that makes it unique from the others. Silica rich sediments characterize the deep sea floor.

The concept of seafloor spreading was combined with the earlier idea of continental drift to create the theory of plate tectonics. Using GeoMapApp students examine the age of the seafloor crust calculate the rate of seafloor spreading at different locations around the world and compare the spreading rates within the context of plate tectonics. Rocks closest to mid-ocean ridges are the oldest.

Take up this quiz and. We dont perceive that the continents we live on are moving. 106 Chapter 17 Earth Science.

The statements below describe the steps involved in the process of seafloor spreading. Circle the letter of each choice that correctly describes evidence for sea-floor spreading. Turbidity currents can occur at both active and passive continental margins True or False.

Which of the following correctly describes seafloor spreading. Annotated Teacher Edition Microsoft Word 987kB Oct7 11. B absence of sediment along the mid-ocean ridge axis.

Correctly describes seafloor spreading. Rocks farthest from mid-ocean ridges are the oldest. Continental drift and fossil theory B.

Their crystals are pulled into alignment by the Earths magnetic field just like a compass needle is pulled towards magnetic north. Seafloor Spreading is the usual process at work at divergent plate boundaries leading to the creation of new ocean floor. Spreading rates determine if the ridge is fast intermediate or slow.

Continental drift and Big Bang theory ____17. Did you know that the inner core is mostly made of liquid too hot that it melts iron. Once the basalt cools completely into solid rock the alignment of the iron minerals is fixed.

The theory of plate tectonics combine which two other theories. Number these steps in the order in which they occur. In 1965 a Canadian geophysicist J.

Sea Floor Spreading An Overview Sciencedirect Topics

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