We expect Earth would still have a magnetic field during a reversal, but it would be weaker than normal with multiple magnetic poles. Radio communication would deteriorate, navigation by magnetic compass would be difficult and migratory animals might have problems. Many migratory animals use the geomagnetic field to orient themselves. However, even if Earth's magnetic field began a reversal, it would still take several thousand years to complete a reversal.
The Earth's magnetic field has changed polarity hundreds of times in the geological past. This phenomenon is known as geomagnetic reversal. The frequency at which these reversals occur is not regular, but on average, it is estimated to happen every few hundred thousand years.
There is no scientific evidence to suggest that the polarity of Earth's magnetic field will change in 2012 or any time soon. The Earth's magnetic field has undergone numerous reversals throughout its history, but these events occur over thousands of years, not within a single year.
In rock formed when the sea floor is being built, such as at the mid-Atlantic ridge, the minerals preserve the magnetic polarity. Since the flipping of the poles is fairly regular, the count of the bands can give a time.
The Earth's magnetic field is weakening in strength, particularly in the South Atlantic region. This weakening has been observed over the past few centuries. Scientists believe this weakening is a natural process and could be a sign that the Earth's magnetic poles are preparing to reverse.
The Earth's magnetic field is strongest at the North and South magnetic poles, which are not the same as the geographic North and South poles. The magnetic field strength varies at different locations on the Earth's surface.
accorsing to the earths magnetic field
every 250,000 years :)
Yes it can reverse from North to South
250,000 years
People use Earth's magnetic field for navigation, such as in compasses to find direction. Animals, like birds and fish, can sense Earth's magnetic field to navigate during migration or find their way in the ocean.
The Earth's magnetic field has changed polarity hundreds of times in the geological past. This phenomenon is known as geomagnetic reversal. The frequency at which these reversals occur is not regular, but on average, it is estimated to happen every few hundred thousand years.
The process of the reversal of the Earth's magnetic poles is called a magnetic flip. This occurs every 4 or 5 times per million years.
Earth's magnetic field reverses its polarity irregularly, with north and south magnetic poles switching places every few hundred thousand years. This phenomenon is known as geomagnetic reversal. The last complete reversal happened around 780,000 years ago.
If Earth's magnetic field was fixed without reversals, newly-formed seafloor basalts would only show one magnetic orientation. This uniformity would make it harder to track the movement of tectonic plates or determine the age of the seafloor using magnetic stripes. It would also impact our understanding of plate tectonics and Earth's geology.
The phenomenon you're referring to is known as geomagnetic reversal or magnetic pole reversal. This occurs when the Earth's magnetic field flips its polarity, causing the magnetic north and south poles to switch positions.
compasses point to it. its at the north pole in the arcticNo It's not, the Magnetic North Pole is at this moment just off Ellesmere Island heading towards Russia at a rate of 40 miles (60 km) per year.AnswerIt depends what you mean by 'magnetic north pole'. If you mean the location, called 'Magnetic North' (arctic), then its polarity is south. If, by 'magnetic north pole', you mean its magnetic polarity, then it's located at Magnetic South (antarctic).
You must not confuse 'Magnetic North' with 'north magnetic pole', as these two things are completely different! 'Magnetic North' is a location, while 'north magnetic pole' refers to the magnetic polarity of the earth's 'Magnetic South'.'Magnetic North' is the point on the earth towards which magnetic compasses point. It is not a fixed position. It is presently (2012) in Canada and is drifting toward Siberia. It should not be confused with Grid, Geographic, or True North, which is a fixed point located at the axis about which the earth revolves. The same applies to the Magnetic South.The term, 'Magnetic North' describes a location, and has absolutely nothing to do with its magnetic polarity. The magnetic polarity of the location we call Magnetic North is actually a south pole, which is the reason it attracts the north pole of a magnet or compass needle.