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Paleomagnetism refers to the strength and orientation of the earth's magnetic field at some remote past time. Magnetic field reversals are recorded in deep ocean bottom materials which show that at some ancient times the earth's magnetic poles have reversed, north pole becoming south pole and south pole becoming north pole.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoWhen the North Pole and South Pole switch to the opposite charge.
Jeff Hairabedian
Wiki User
∙ 12y agoHigh pressure liquid magnets in a low gravity environment.
Wiki User
∙ 12y agoIt hasn't been that important.
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How were the reversals of the Earth's magnetic field discovered?
The reversals were seen by archeologists in ancient pottery shards.
Why was the pattern of a alternating reversals of earth's magnetic fields?
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How does magnetic dating work?
Paleomagnetic dating utilizes records of "how things were" in a given area across time in the past as a basis for comparison to an unknown sample in order to date it. A link is provided to the Wikipedia article on paleomagnetism, which is the basis for paleomagnetic dating.
What are three characteristics of magnetic reversals?
In the past, the polarity of the Earth's magnetic field has reversed, many times over. This was discovered in samples of the rocks of the ocean floor at mid-ocean ridges, where matching patterns of magnetic polarity were discovered on each side of the mid ocean ridge. It is believed that the magnetic field is caused by electrical currents in the Earth's interior. [We know that the interior is too hot to sustain the magnetism of a bar magnet. As proved by the Curie's.] If these currents circulate parallel to the equator, then they would be pretty stable. but we know that the poles are moving. This may indicate that the path of electrical conduction is not a simple circle. We just have to wait. The earth's magnetic field is caused by the effect of the Earth's rotation on the liquid iron core. This field occasionally flips so that the direction that was magnetic north becomes magnetic south and what was magnetic south becomes magnetic north. This is called a magnetic reversal and these reversals can be detected in Earth's lava rocks which lock in the direction of the current field when they cool and solidify. Earth's magnetic field flips about once every 100 thousand years. The Sun goes through similar magnetic reversal cycles but on the Sun the reversals happen about once every 11 years. Please see the related link for more information.
The area around an object that is affected by the magnetism of that object is the?
A Magnetic Force
What is the study of the Earth's magnetic field is known as?
it's paleomagnetism
What is paleomagnetism used to identify?
The Earth's Magnetic field and magnatizum in the rocks.
How were the reversals of the Earth's magnetic field discovered?
The reversals were seen by archeologists in ancient pottery shards.
Because of the property of paleomagnetism?
The records of the Earth's magnetic field in rocks have been studied.
How does paleomagnetism affect humans?
Paleomagnetism refers to the magnetism found in rocks that was induced by the earth's magnetic field. A deeper understanding of the concepts behind paleomagnetism could positively impact the lives of humans.
How is the polarity of Earth's magnetic field recorded in the sea floor?
The polarity of the Earth's magnetic field is recorded in igneous rocks, and reversals.
What is the study of the magnetic record preserved in Earth's rocks called?
paleomagnetism
Describe how the polarity of earth's magnetic field is recorded in the sea-floor?
The polarity of the Earth's magnetic field is recorded in igneous rocks, and reversals.
What is paleomagnitism?
Paleomagnetism is the study of rock magnetism in order to determine the intensity and direction of Earth's magnetic field in the past.
What is the result of Magnetic reversals?
The north pole becomes the south pole and vice versa. Also any rocks cooling in the reversed field will trap the magnetic polarity prevalent at their time of cooling. This means we can can trace the history of past magnetic reversals.
What has cause the zebra pattern in the rock of ocean floor?
Caused by changes in earth's magnetic field over time, especially reversals of the magnetic poles.
What has caused the zebra pattern'' in the rock of the ocean floor?
Caused by changes in earth's magnetic field over time, especially reversals of the magnetic poles.
