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When igneous (born from lava) rocks cool, the iron in them points to the magnetic north pole. By examining these patterns in layers of rock, we can see that these patterns have gradually changed over time. This field of study is called PaleoMagnetism.
The magnetic poles can also flip, reversing the north and south directions relatively quickly. These are also recorded in the rock.
What else can I help you with?
Why does the north needle on a compass point to the geographic north pole?
Magnets, man...
What Three properties of a magnet?
1. Magnets attract iron and other ferromagnetic materials such as neodymium and cobalt. 2. Magnets attract or repel other magnets. 3. In addition one part of a magnet will always point north when allowed to swing freely.
Does a compass needle always point directly northward in the absence of other nearby magnets or currents?
In the absence of interference from other magnetic fields or currents, a compass needle will align itself with the Earth's magnetic field and point towards the magnetic North Pole. However, it may not always point directly northward due to local magnetic anomalies or declination.
How do magnets help explorers?
Magnets are used in compasses because if a magnet can move freely, its north pole will always swing round to point towards the Earth's North Pole. Then, you know which way is north, making a compass a very useful tool. You can test this out by hanging a bar magnet on a piece of string.
Which is the point to which a compass always points?
The point to which a compass always points is the magnetic North Pole. This is because the compass needle aligns itself with the Earth's magnetic field, which is directed towards the magnetic North Pole.
Does a compass always tell you which ways north?
No it odesn't, if you had lots of magnets surrounding it it wouldn't point to North on the magnets
Why do the magnets of a compass attract to the north pole but the bars repel?
A compass will always point to the south pole of a magnet.
Why does a compass point the way it does?
A compass point is lightly magnetised and is attracted the the magnetic north pole, so provided there are no other stronger magnets nearby the compass will always point north, and knowing where north is you can then work out all the other directions.
What did the vikings call magnets?
As a compass. They dangled the metallic stone from a string, knowing it would point north.
Why does the north needle on a compass point to the geographic north pole?
Magnets, man...
Where does the north pole of a freely swinging magnet always point?
It will point along the magnetic field lines. If there are no other magnets around, it will usually point to the north. More precisely, toward's Earth's magnetic SOUTH pole; from most geographical location, this point is more or less towards the NORTH.
What Three properties of a magnet?
1. Magnets attract iron and other ferromagnetic materials such as neodymium and cobalt. 2. Magnets attract or repel other magnets. 3. In addition one part of a magnet will always point north when allowed to swing freely.
How do you find north pole in bar magnets?
Use a compass. It will point to a magnet's south pole.
Where does the pointer of a compass always point?
north
Compass rose always point where?
north
Does a compass needle always point directly northward in the absence of other nearby magnets or currents?
In the absence of interference from other magnetic fields or currents, a compass needle will align itself with the Earth's magnetic field and point towards the magnetic North Pole. However, it may not always point directly northward due to local magnetic anomalies or declination.
What way will a compass point in Uruguay?
the compass would point north because it Always points north unless you are at the north pole. :)
