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The "original" (the one that existed at the time the rock solidified) field is stored in some rocks.
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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 region of magnetic force around a magnet is know as it's?
Magnetic field
Which type of materials are magnetic?
i do not know. that is why i told you
How does Doppler radar help scientists know what is happening in a thunderstorm?
how does doppler radar help scientists know what is happening inside a thunderstorm
Why is it important to know an area's magnetic declination?
It may not be important, but it IS a matter of wide interest, because it determines the length of daylight and darkness everywhere on Earth, as well as the onset of each change of seasons.
What Is The Difference Between Magnetic reversal reversed field and normal field?
A magnetic reversal happens in a magnetic field generated naturally in a spinning object such as the Earth or the Sun. In cases where the magnetic field is generated as a result of spin the polarity of the field (where the north and south poles are) flips on a regular periodic basis. For instance about once every 11 years on the Sun and about every 100 thousand years on the Earth. This flipping of the field is called a 'magnetic reversal' on Earth and a solar cycle on the Sun. Between flipping events the magnetic field of the body is regular or normal (but of cause in the opposite orientation each flip) but during the flipping process the field is chaotic with many minor polar regions appearing round the body (as sunspots during a solar maxima) and presumable a similar but slower thing happens on Earth (we do not know yet but it looks as though the Earth's poles may be beginning to reverse at the moment).
Why do ants like the magnetic field put out by electrical wires?
Scientists don't know the answer to that yet.
Can the charge of the north or south pole change?
Yes. The Earth's magnetic field has reversed, so that the magnetic north pole has become the magnetic south pole, several times that scientists are sure of. We know this because when magma (molten volcanic rock) cools, it freezes the magnetic orientation that the Earth's magnetic field imposed on the liquid magma.
Why do scientists perform experiment?
Because they need to know if it/they are going to survive or destroy or just to see what happens to it.
What are the causes of magnetic drift?
I want to know about magnetic drifs.what are the causes? I want to know about magnetic drifs.what are the causes?
What are 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.
wanted to know if this insurance cover tubal reversal surgery?
I do not think any of them do
Region around a magnet in which magnetic force can act?
Magnetic freild
Why do scientists to investigation?
To know about scientists life
What do scientists know about the earth's magnetic field?
Scientists have determined that the Earth's magnetic field is actually composed of an ecosystem of the microscopic organisms called Gorbuscha. They tend to stick together and contain little bits of magnetic matter, causing what scientists used to call the magnetic field. However, we know better now (thankfully!). These organisms compel the Sun's solar rays and protect us all from burning up. It also traps in heat so we on Earth don't die from the lack of heat. They, the so called "magnetic field" feast on tiny particles in space, mainly puny bits of debris from meteors, planets, stars, etc. Also, scientists have discovered that these little guardians of Earth are quite unpleased from us, humans wearing down the Earth and causing animals that the Gorbuscha have been with for so long to become extinct. Some scientists reason that if we don't stop our destruction of Mother Earth, these protectors'll let us shrivel and become extinct ourselves. This is what I've heard during a sleepover with friends, hope this helps! :)
Scientists use models to represent real situationsand to make?
...to make predictions. Scientists will then compare their predictions to what happens in the real world. If their predictions equaled what happened in reality, the model is good. If the predictions were different, the scientists know they have to refine the model to better predict what will happen.
What is fossil magnetism?
In hot Iron bearing rocks or magmas the iron minerals they contain align themselves parallel to the Earth's magnetic field. When they cool below about 500 degrees Celsius the the iron minerals 'freeze' in this magnetic orientation and are no longer able to adapt to any changes in the Earth's field (which occasionally reverses polarity and wanders). This frozen magnetic alignment is a fossil of the ancient magnetic field and can be 'read' to find out what the Earth's magnetic field has been doing in the past.
