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This happens about once every 50 to 100 thousand years and is called a magnetic reversal.
It would appear that the self generated magnetic fields formed by rotating bodies all undergo pole reversals. For instance the Sun does this about every 11 years.
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True or false the magnetic poles are not located exactly at the geographic poles?
True. The magnetic poles move constantly.
How does earths magnetic axis compare to its rotational axis?
The magnetic axis is relatively unstable compared to the rotational axis. The magnetic poles move around quite a bit from decade to decade. In fact, geologists have discovered that the alignment of the molecules in some sedimentary materials shows that the north and south magnetic poles actually switch places every few tens of thousands of years.
The angle of difference between the geographic and magnetic poles is called the declination How does the declination change as you move north from where you live?
The angle between the geographic and magnetic poles extends more towards the east, as you move to the north. The magnetic pole is actually near Greenland.
What recent evidence is there that the poles are moving?
Ok, lets clear this up once and for all. The North and South Geographic Poles are not moving.What is moving are the North and South Magnetic Poles, which is something entirely different.A Magnetic Pole is the point on the Earth's surface at which the Earth's magnetic field points vertically downwards. So it does not matter very much if these points move, which they have done many times over the Earths history.A Geographic Pole is defined as the imaginary point on the Earths surface, where the Earth's axis of rotation meets the Earth's surface. While these points do move around a few metres, due to Earth's spin wobble, it is nothing to be alarmed about.For the geographical poles to move, something pretty catastrophic will have to happen, ie an asteroid strike.So all the 'doom merchants' and 'the end is nigh supporters' out there will once again have egg on their faces, until they find the next thing to support.
Why do the geographical poles move?
The Earth are two North Poles: the geographic North Pole and the magnetic north pole. The geographic North Pole does not move. The magnetic North Pole (this is the North Poles that allows a compass to work) does move. It moves (very slowly) due to changes in the Earth's magnetic field caused by the movement of liquid metal beneath the Earth's surface. (The Earth's magnetic North Pole is currently near the geographic South Pole, near Antarctica. Conversely, the Earth's magnetic South Pole is currently near the geographic North Pole.)
Why is it hard to read a compass when standing at one of the earths poles?
Because the earths magnetic poles move around from year to year, and even day to day.
Do earths magnetic poles stay where they are?
No, they move slowly. The North Magnetic Pole, for example, is currently drifting a little west of north at about 40 km/year.
Why do the magnetic poles move around?
Because the metals in the hot center of our earth are moving arround.
True or false the magnetic poles are not located exactly at the geographic poles?
True. The magnetic poles move constantly.
How does earths magnetic axis compare to its rotational axis?
The magnetic axis is relatively unstable compared to the rotational axis. The magnetic poles move around quite a bit from decade to decade. In fact, geologists have discovered that the alignment of the molecules in some sedimentary materials shows that the north and south magnetic poles actually switch places every few tens of thousands of years.
Does earths geographical North Pole move 10 km each year?
The geographic poles move hardly at all ... fractions of a millimeter in response todrastic geological events, such as extreme earthquakes.The Earth's magnetic poles can move hundreds of meters in the span of a year.
The angle of difference between the geographic and magnetic poles is called the declination How does the declination change as you move north from where you live?
The angle between the geographic and magnetic poles extends more towards the east, as you move to the north. The magnetic pole is actually near Greenland.
Can the earths magnetic field move?
Yes it can reverse from North to South
What happens when you move two opposite magnetic poles closer together?
they move away from each other!
What happens when you move unlike magnetic poles closer together?
They will attract each other.
What recent evidence is there that the poles are moving?
Ok, lets clear this up once and for all. The North and South Geographic Poles are not moving.What is moving are the North and South Magnetic Poles, which is something entirely different.A Magnetic Pole is the point on the Earth's surface at which the Earth's magnetic field points vertically downwards. So it does not matter very much if these points move, which they have done many times over the Earths history.A Geographic Pole is defined as the imaginary point on the Earths surface, where the Earth's axis of rotation meets the Earth's surface. While these points do move around a few metres, due to Earth's spin wobble, it is nothing to be alarmed about.For the geographical poles to move, something pretty catastrophic will have to happen, ie an asteroid strike.So all the 'doom merchants' and 'the end is nigh supporters' out there will once again have egg on their faces, until they find the next thing to support.
Which location is the magnetic field the strongest?
A magnetic field is generally strongest (most concentrated) at a pole. Note that, while familiar magnets have two poles, it is also possible for a magnet to have more than two. Whether a magnet could have only pole is controversial. The Earth's magnetic field is strongest at the north and south magnetic poles, which are near the north and south geographic poles. The magnetic poles move over time and are generally not located precisely at the geographic poles.
