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Periodically, the magnetic field of the earth reverses polarity. The direction of the magnetic field is recorded in the magnetic properties of rocks when they are erupted.
Rocks are being continuously added at sea floor spreading regions, and thus the magnetic reversals are recorded as pairs of parallel 'stripes' alongside the mid ocean spreading ridge.
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What was the theory that was shown to be correct by age evidence and magnetic clues?
The theory that was confirmed by age evidence and magnetic clues is the theory of plate tectonics. Evidence such as the ages of rocks on either side of ocean ridges and the alignment of magnetic minerals in oceanic crust support the idea that Earth's lithosphere is broken into rigid plates that move and interact with each other.
Volcanic rock shows that some layers have magnetic fields that are aligned opposite to Earths This evidence BEST fits which hypothesis?
The evidence of volcanic rock layers with opposite magnetic fields to Earth's aligns with the hypothesis of geomagnetic reversal. This suggests that Earth's magnetic field has flipped polarity multiple times throughout its history.
What is the evidence of pole reversal?
The evidence for Earth's magnetic pole reversals comes from the Geological record. If you look at the fossil polarity of a section of sea floor taken across and to either side of a mid oceanic ridge, there is a mirror pattern of stripes where the rocks have reversed polar directions. Similarly the poles of the Sun reverse every 11 years as the sun goes through a maxima and minima.
Which statement provides evidence that the seafloor is spreading out from both sides of the Mid-Atlantic Ridge?
The presence of alternating magnetic stripes on either side of the Mid-Atlantic Ridge provides evidence that the seafloor is spreading out. As magma solidifies to form new oceanic crust, it records the Earth's magnetic field. These magnetic stripes mirror each other on either side of the ridge, indicating a symmetric pattern of seafloor spreading.
How do rocks that formed at mid-ocean ridges show that magnetic reversal have occurred?
Rocks formed at mid-ocean ridges exhibit patterns of magnetic stripes that record Earth's magnetic reversals. As magma rises and solidifies at the ridge, iron-rich minerals align with the Earth's magnetic field, locking in a record of the magnetic orientation at that time. When a magnetic reversal occurs, new rocks forming at the ridge will display the opposite magnetic alignment, creating a symmetrical pattern of alternating magnetic orientations on either side of the ridge. This evidence supports the theory of seafloor spreading and provides a timeline of Earth's magnetic history.
What was the theory that was shown to be correct by age evidence and magnetic clues?
The theory that was confirmed by age evidence and magnetic clues is the theory of plate tectonics. Evidence such as the ages of rocks on either side of ocean ridges and the alignment of magnetic minerals in oceanic crust support the idea that Earth's lithosphere is broken into rigid plates that move and interact with each other.
What evidence is there for the reversal of the magnetic field of the earth?
Evidence for the reversal of Earth's magnetic field is found in magnetic minerals in rocks that preserve the direction of the field when they were formed. These minerals show alternating patterns of magnetization that suggest the field has reversed multiple times throughout Earth's history. Additionally, studies of sediment cores and oceanic crust have also provided evidence of past magnetic field reversals.
True or false Bands of magnetic material in the sea floor that have opposite poles or exhibit magnetic reversal can provide evidence for sea floor spreading.?
true
Volcanic rock shows that some layers have magnetic fields that are aligned opposite to Earths This evidence BEST fits which hypothesis?
The evidence of volcanic rock layers with opposite magnetic fields to Earth's aligns with the hypothesis of geomagnetic reversal. This suggests that Earth's magnetic field has flipped polarity multiple times throughout its history.
What is the evidence of pole reversal?
The evidence for Earth's magnetic pole reversals comes from the Geological record. If you look at the fossil polarity of a section of sea floor taken across and to either side of a mid oceanic ridge, there is a mirror pattern of stripes where the rocks have reversed polar directions. Similarly the poles of the Sun reverse every 11 years as the sun goes through a maxima and minima.
The fact that similar fossils are found on both sides of the ocean is evidence of . global positioning oceanic drifts continental drift magnetic reversal?
continental drift. This is because the presence of similar fossils on opposite sides of the ocean suggests that the landmasses were once connected and have since drifted apart. This phenomenon supports the theory of continental drift proposed by Alfred Wegener.
Which statement provides evidence that the seafloor is spreading out from both sides of the Mid-Atlantic Ridge?
The presence of alternating magnetic stripes on either side of the Mid-Atlantic Ridge provides evidence that the seafloor is spreading out. As magma solidifies to form new oceanic crust, it records the Earth's magnetic field. These magnetic stripes mirror each other on either side of the ridge, indicating a symmetric pattern of seafloor spreading.
What is a sentence for magnetic reversal?
The sun goes through a magnetic reversal twice in every sunspot cycle.
What is a good sentence for magnetic reversal?
The sun goes through a magnetic reversal twice in every sunspot cycle.
Bands of magnetic material in the sea floor that have opposite poles or exhibit magnetic reversal can provide evidence for sea floor spreading true or false?
True. Bands of magnetic material in the sea floor that have opposite poles or exhibit magnetic reversal provide evidence for sea floor spreading. This is because as new oceanic crust forms at mid-ocean ridges, Earth's magnetic field periodically reverses, creating magnetic stripes on the ocean floor that align with the direction of the magnetic field at that time.
How do rocks that formed at mid-ocean ridges show that magnetic reversal have occurred?
Rocks formed at mid-ocean ridges exhibit patterns of magnetic stripes that record Earth's magnetic reversals. As magma rises and solidifies at the ridge, iron-rich minerals align with the Earth's magnetic field, locking in a record of the magnetic orientation at that time. When a magnetic reversal occurs, new rocks forming at the ridge will display the opposite magnetic alignment, creating a symmetrical pattern of alternating magnetic orientations on either side of the ridge. This evidence supports the theory of seafloor spreading and provides a timeline of Earth's magnetic history.
Used as evidence for sea-floor spreading?
Magnetic striping on the ocean floor is used as evidence for seafloor spreading. As new oceanic crust forms at mid-ocean ridges, Earth's magnetic field is recorded in the rocks in alternating patterns of normal and reversed polarity. This provides support for the idea that new crust is continuously being created at mid-ocean ridges and spreading away in opposite directions.
