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2 Σεπ 2024 · This is because seafloor spreading theory explains how new oceanic crust is formed at the mid-ocean ridges, where tectonic plates are moving apart. As the plates separate, magma rises from the mantle and solidifies to form new crust, pushing the existing crust away from the ridge.
- Sea-Floor Spreading And Plate Tectonics Quiz - ProProfs
Do you know about tectonic plates and sea-floor spreading?...
- Sea-Floor Spreading And Plate Tectonics Quiz - ProProfs
21 Μαρ 2023 · Do you know about tectonic plates and sea-floor spreading? To test your knowledge on the same, take this sea-floor spreading and plate tectonics quiz. As you know, sea-floor spreading is the process where Earth's lithosphere spreads apart.
When one tectonic plate __________ under another at a convergent boundary it sinks back in the mantle. What 3 kinds of evidence were used to prove that the seafloor spread? Age of rocks, magnetic seafloor stripes, WWII ship logs. Pillow Lava, magnetic seafloor stripes, age of rocks.
Past the subduction zones where land and ocean plates collide. The diagram shows the magnetic polarity (they look like zebra stripes) of the seafloor at the Mid-Ocean Ridge.
tectonic plates move together and create deep ocean trenches. tectonic plates move apart and magma fills the gap and pushes the older crust away. tectonic plates collide and create mountains without magma.
How did scientists use the magnetic polarity of the Earth's crust to prove the theory of seafloor spreading? (Rocks in Earth's crust show permanent evidence of Earth's polarity at a given time.) They were able to reverse the polarity of crust samples using an electromagnet.
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.
