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What are Other than earth is also known to have magnetic pole reversals?
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∙ 6y ago
The sun (correct for Apex)
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During various times in the geologic past the polarity of Earth's magnetic field has been reversed - True or False?
True. These are known as magnetic reversals. Please see the related link for more information.
Does geomagnetic reversals represent a source of information on the rate of sea-floor spreading?
As mid ocean ridges create new seafloor over extended periods of time, the magnetic poles of the Earth reverse back and forth. The rocks on either side of a mid ocean ridge show the opposite magnetisms and appear striped. From knowing the approximate ages of these magnetic reversals, one can estimate the approximate age of each stripe.
Why do the magnetic poles move around?
Because the metals in the hot center of our earth are moving arround.
The dynamo theory states that Earth's magnetic field is created in the layer known as the?
core
The Dynamo theory states that Earth magnetic field is created in the layer known as the?
core
During various times in the geologic past the polarity of Earth's magnetic field has been reversed - True or False?
True. These are known as magnetic reversals. Please see the related link for more information.
What causes the magnetic striping noticed about the mid ocean ridges?
These "stripes" formed the pattern known as magnetic striping. ... They hypothesized that the magnetic striping was produced from the generation of magma at mid-ocean ridges during alternating periods of normal and reversed magnetism by the magnetic reversals of the Earth's magnetic field.
Does geomagnetic reversals represent a source of information on the rate of sea-floor spreading?
As mid ocean ridges create new seafloor over extended periods of time, the magnetic poles of the Earth reverse back and forth. The rocks on either side of a mid ocean ridge show the opposite magnetisms and appear striped. From knowing the approximate ages of these magnetic reversals, one can estimate the approximate age of each stripe.
What is it called when Earth's magnetic poles chang places?
This is known as magnetic reversal when earth's magnetic poles change places.
How does magnetic reversals found in the sea floor rocks cause continental drift?
Magnetic reversals found in the sea floor do not cause continental drift. It does however provide evidence that sea floor spreading occurs (and hence is evidence for the theory of plate tectonics). This is because the iron rich minerals in basaltic rocks (such as magnetite) are at high temperatures when they are first intruded into the crust and at these high temperatures they record the orientation of Earth's magnetic field. As they cool, this record of the orientation of the magnetic field is "locked" in place. The Earth's magnetic field is known to "reverse polarity" - the north and south magnetic poles switch over time and so the orientation of the magnetic field in newly cooled rocks will change to match this. Geophysicists had recognised that there were alternating bands of rocks with these reversed orientations of the magnetic field. These bands ran parallel to the Mid-Ocean-Ridges. In the 1960s after significant magnetic survey work was undertaken it was realised that the alternating bands on one side of the oceanic ridge were a mirror image to the bands on the other side. So why is this evidence for sea floor spreading / plate tectonics? Well it was realised that if the newly intruded rock was to move away from the Mid-Ocean-Ridge (M-O-R) and be replaced with new younger rock, this rock would continue to record the orientation of the Earth's magnetic field as and when reversals occurred. As such this would lead to the stripes of alternating magnetic orientation that are symmetrical about the M-O-R. As such movement of the plates away from a M-O-R and the reversals of Earth's magnetic field best explained the presence of these bands and so confirmed the idea that sea floor spreading was occurring. For more information, please see the related link.
What is it called when earths magnetic poles change poles?
This is known as magnetic reversal when earth's magnetic poles change places.
How did the earth get the magnetic field?
Because there's a magnet in the centre of the earth which is known that it's the source of gravity. It's magnetic field is around the earth obviously.
What is the study of the Earth's magnetic field is known as?
it's paleomagnetism
How does a sun flare effect earth and other planets?
solar flare... sends out a blast of magnetic field, it has been known to cause power outages on the planet of Earth
Why do the magnetic poles move around?
Because the metals in the hot center of our earth are moving arround.
The dynamo theory states that Earth's magnetic field is created in the layer known as the .?
core
The dynamo theory states that Earth's magnetic field is created in the layer known as the?
core
