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Contents
- 1 What Evidence In Rocks Supports Seafloor Spreading?
- 2 What evidence in rocks support the theory of seafloor spreading?
- 3 What are 3 pieces of evidence that support the theory of seafloor spreading?
- 4 Which of the following evidence supports seafloor spreading?
- 5 What evidence in rocks supports the theory of seafloor spreading quizlet?
- 6 What is evidence of seafloor spreading Brainly?
- 7 What are the 4 pieces of evidence used to support the theory of seafloor spreading?
- 8 What types of evidence best supports the theory of plate tectonics?
- 9 What are three kinds of evidence scientists have found to support this idea?
- 10 What is the major evidence that sea-floor spreading creates new lithosphere?
- 11 How do ocean floor rocks and sediments provide evidence of seafloor spreading?
- 12 How do rocks along the central valley of the mid-ocean ridge provide evidence to support seafloor spreading?
- 13 Which statement describes the cyclic nature of seafloor spreading?
- 14 Which statement describes one event that happens at deep ocean trenches?
- 15 Which statement best describes the theory of plate tectonics?
- 16 What are the 5 evidence that supports the theory of plate tectonics?
- 17 How do rocks help support the theory of plate tectonics?
- 18 Which of the evidence concerning seafloor spreading Do you believe best supports the theory?
- 19 What are 2 pieces of evidence that support seafloor spreading?
- 20 How was magnetism used to prove that seafloor spreading occurs?
- 21 What is the first step in the seafloor spreading process?
- 22 What other evidence supports the hypothesis of continental drift?
- 23 How do these magnetic reversals provide evidence of seafloor spreading?
- 24 What is the theory that scientists use to explain plate movement on earth?
- 25 Where would you find the oldest rock on the ocean floor?
- 26 What is the pattern seen in the magnetic stripes on the seafloor?
- 27 Which is one piece of evidence of seafloor spreading fossil material?
- 28 Which statement accurately describes how magnetic stripes in ocean rock provide evidence of seafloor spreading?
- 29 What statement most accurately describes the theory of seafloor spreading?
- 30 How does seafloor spreading support the hypothesis of continental drift quizlet?
- 31 Seafloor Spreading
- 32 Science 10: Lesson 5 Seafloor Spreading
What Evidence In Rocks Supports Seafloor Spreading?
Abundant evidence supports the major contentions of the seafloor-spreading theory. 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 evidence in rocks support the theory of seafloor spreading?
Evidence of Sea Floor Spreading. Harry Hess’s hypothesis about seafloor spreading had collected several pieces of evidence to support the theory. This evidence was from the investigations of the molten material seafloor drilling radiometric age dating and fossil ages and the magnetic stripes.
What are 3 pieces of evidence that support the theory of seafloor spreading?
This hypothesis was supported by several lines of evidence: (1) at or near the crest of the ridge the rocks are very young and they become progressively older away from the ridge crest (2) the youngest rocks at the ridge crest always have present-day (normal) polarity and (3) stripes of rock parallel to the ridge …
Which of the following evidence supports seafloor spreading?
Evidence to support the seafloor Spreading Theory:
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Molten Materials Magnetic Materials stripes etc affects the sea floors in the most astonishing way.
What evidence in rocks supports the theory of seafloor spreading quizlet?
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.
What is 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 are the 4 pieces of evidence used to support the theory of seafloor spreading?
This hypothesis was supported by several lines of evidence: (1) at or near the crest of the ridge the rocks are very young and they become progressively older away from the ridge crest (2) the youngest rocks at the ridge crest always have present-day (normal) polarity and (3) stripes of rock parallel to the ridge …
What types of evidence best supports the theory of 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 are three kinds of evidence scientists have found to support this idea?
- Molten Material (magma/lava) – scientists have found strange rocks shaped like pillows in the central valley of the ocean ridge. …
- Magnetic Stripes – The molten rock contains iron – it is magnetic. …
- Drilling Samples – the Glomar challenger drilled holes in the ocean 6km deep.
What is the major evidence that sea-floor spreading creates new lithosphere?
The record of magnetic reversals is carried away from each side of the spreading center of a mid-ocean ridge showing that the molten rock is creating new lithosphere.
How do ocean floor rocks and sediments provide evidence of seafloor spreading?
2. Explain how ocean-floor rocks and sediments are evidence of seafloor spreading. BOTH SEDIMENT THICKNESS AND THE AGES OF OCEAN-FLOOR ROCKS INCREASE WITH DISTANCE FROM THE RIDGE. THESE DATA ARE CONSISTENT WITH NEW CRUST FROMING AT RIDGES AND BEING DESTROYED AT TRENCHES.
How do rocks along the central valley of the mid-ocean ridge provide evidence to support seafloor spreading?
Eruptions of molten material maqgnetic strips in the rock of the ocean floor and the ages of the rocks themselves. How do rocks along the central valley of the mid-ocean ridge provide evidence of sea-floor spreading? Rocks just outside of the mid-ocean ridge are very new while rocks futher away from it are older.
Which statement describes the cyclic nature of seafloor spreading?
The Statements that describe the cyclic nature of seafloor spreading are as follows New oceanic crust is formed.
Which statement describes one event that happens at deep ocean trenches?
The destruction of crust occurs at deep-sea trenches. Oceanic rocks are pillow-shaped when formed.
Which statement best describes the theory of plate tectonics?
Sections of Earth’s continents are in slow constant movement. Explanation: The theory of plate tectonics states that pieces of Earth’s lithosphere are in slow constant motion developed due to convection currents in the mantle. These plates move over the asthenosphere the molten upper portion of the mantle.
What are the 5 evidence that supports the theory of plate tectonics?
There is variety of evidence that supports the claims that plate tectonics accounts for (1) the distribution of fossils on different continents (2) the occurrence of earthquakes and (3) continental and ocean floor features including mountains volcanoes faults and trenches.
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How do rocks help support the theory of plate tectonics?
One of the key pieces of evidence supporting plate tectonic theory was the discovery that rocks on the seafloor record ancient reversals of the Earth’s magnetic field: as rocks are formed where plates are moving away from one another they record the current direction of the Earth’s magnetic field which flip-flops …
Which of the evidence concerning seafloor spreading Do you believe best supports the theory?
Abundant evidence supports the major contentions of the seafloor-spreading theory. 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 2 pieces of evidence that 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.
How was magnetism used to prove that seafloor spreading occurs?
The specific magnetism of basalt rock is determined by the Earth’s magnetic field when the magma is cooling. Scientists determined that the same process formed the perfectly symmetrical stripes on both side of a mid-ocean ridge. The continual process of seafloor spreading separated the stripes in an orderly pattern.
What is the first step in the seafloor spreading process?
1. A long crack in the oceanic crust forms at a mid ocean ridge. 2. Molten material rises and erupts along the ridge.
What other evidence supports the hypothesis of continental drift?
The evidence for continental drift included the fit of the continents the distribution of ancient fossils rocks and mountain ranges and the locations of ancient climatic zones.
How do these magnetic reversals provide evidence of seafloor spreading?
Magnetic reversals occur every so often. When they happen the Earth’s magnetic field reverses its polarity. In other words north becomes south and south becomes north. Magnetic reversal proves seafloor spreading because we can see the polarity of the Earth’s magnetic field in rocks.
What is the theory that scientists use to explain plate movement on earth?
The theory of plate tectonics revolutionized the earth sciences by explaining how the movement of geologic plates causes mountain building volcanoes and earthquakes.
Where would you find the oldest rock on the ocean floor?
the Mediterranean SeaThe oldest seafloor is comparatively very young approximately 280 million years old. It is found in the Mediterranean Sea and is a remnant of an ancient ocean that is disappearing between Africa and Europe.
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What is the pattern seen in the magnetic stripes on the seafloor?
When lava gets erupted at the mid-ocean ridge axis it cools and turns into hard rock. As it cools it becomes permanently magnetized in the direction of the Earth’s magnetic field. … This creates a symmetrical pattern of magnetic stripes of opposite polarity on either side of mid-ocean ridges.
Which is one piece of evidence of seafloor spreading fossil material?
Explanation: Eruptions of molten material which results in continent material is a piece of evidence of seafloor spreading.
Which statement accurately describes how magnetic stripes in ocean rock provide evidence of seafloor spreading?
Which statement accurately describes how magnetic stripes in ocean rock provide evidence of seafloor spreading? C. The pattern of magnetic strips shows that the seafloor is expanding at mid-ocean ridges.
What statement most accurately describes the theory of seafloor spreading?
What statement most accurately describes the theory of seafloor spreading? a. Oceanic crust continuously forms across the seafloor and is moved by subduction zones toward mid-oceanic ridges where it is consumed.
How does seafloor spreading support the hypothesis of continental drift quizlet?
Explain how seafloor spreading provides a mechanism for continental drift. New ocean lithosphere forms as magma rises to Earth’s surface and solidifies at a mid-ocean ridge. This suggested that if the ocean floor is moving which could push the continents too.
Seafloor Spreading
Science 10: Lesson 5 Seafloor Spreading
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