Does the earths magnetic pole match the pole of a bar magnet at all times?
if you have a magnet and a magnetic matereal, rub the magnet from one end of it to the other. do this several times and it will eventualy be a magnet.
A bar magnet is made from magnet materials and has a magnetic field at all times. An electromagnetic is not naturally magnet and only has a magnetic field when electricity is passed through it.
there 2 ways... 1:stroke a magnet over the magnetic object many times. 2:connect a wire to a battery and coil the wire around the magnet object.
Yes, both sides are magnetic, unless you bang it like a thousand times on the ground.
Iron is a magnetic material, which means that it can be attracted by magnets. To make it become magnetic so as to attract other objects (i.e. to function as a magnet), the process of magnetic induction can be used. This can involve stroking the iron rod with a magnet several times (e.g. 20 times) in a fixed direction.
If we take a steel nail and tap it with a magnet in the same way a bunch of times, the magnet will align some of the magnetic domains in the nail. The nail will then have become a permanent magnet. The magnetic strength of the nail will not be great like the magnet that created it, but it will be present and will be permanent. The nail could then be used to pick up… Read More
If you drop a magnet many times on the floor, the vibration induced on the magnet causes the magnetic dipoles to randomize, and it will demagnetize. Source: ChaCha
The directive property of magnetism states that when a magnet is suspended in air, it's N and S (north and south) axis's will remain in the same direction as the earths magnetic meridian. I.e. It will continuously point north and south. If you were to mark one side red and one side blue and spin the magnetic 6 times it would still resort back to the original direction it was in.
Yes. In historical times , clay pots have shown that the earth's magnetic field has reversed.
Yes. The Earth's magnetic field changes and has flipped in historical times. Velikovsky noticed this in examining the magnetic oruientation of ancient pottery.
In bar magnets, the magnetic poles are at the ends of the bar. You can cut any bar magnet and it will always have poles at the ends no matter how many times it is divided.
The only similarities are that they both have magnetic fields and they both have a ferrous core. A permanent magnet is magnetic at all times. An electromagnet is only magnetic when there is a current passing through the coil around a ferrous core. Whereas a permanent magnet has a fixed field strength, the field strength of an electromagnet is dependent on the amount of electric current applied to it.
Rub it several times in one direction with a magnet.
The north and south poles have changed places many times in the past.
What do bands of rock on the seafloor showing alternating magnetic orientation indicate about the earths magnetic field?
They indicate that the Earth's magnetic field has undergone shifting of the positions of it's poles several times in the past.
Repeated striking, heating, or using AC current will demagnetize a magnet. A small magnetic field may remain. It can be demagnetised by: -dropping it many times -hammering it many times -heating it over a flame Heat and impact
To make an iron bar into a magnet you need to get a bar magnet and stroke the iron one way when you get to the end of iron take the magnet off and jump it back to the start and stroke repeat this several times and your bar will soon become magnetic. This is only temporary, therefore the iron will become normal after the magnetic field rubs off. This means that making iron into… Read More
Aluminum is non-magnetic, but does interact with magnetic fields. Aluminum isn't normally magnetic, but as you carry a large aluminum tray towards the magnet, you find that the magnet repels the aluminum, why? Lenz's law. The magnet induces a magnetic field in the moving aluminum tray to oppose it's own, effectively pushing it away. As long as the tray doesn't move, it experiences no magnetic forces. But when you drop it, it falls past the… Read More
a permanent magnet has its domains arranged in one direction at all times and is thus able to exercise magnetic properties at all times, but it loses its magnetism if it is heated to a certain extent second way is to hammer it constantly. this disrupts the alignment of the domains (i.e. they are originally aligned in the same direction) and causes them to align in different directions thus destroying the magnetic behavior of the… Read More
Yes, for instance each sunspot on the sun is caused by separate pairs of magnetic poles poking through the sun's photosphere. No, no matter how many times you break up a magnet, it will always have a north and a south pole. No matter how small the magnet is.
The iron ore Magnetite is naturally magnetic and has been known since prehistoric times. Aristotle has something to say about it in his writings.
There are several ways. 1. Stroke the needle in one direction, with another magnet. 2. Place it in a coil of wire and pass a large (DC) current through the coil for a few seconds. (This is how they would do it commercially) 3. Align the needle with the magnetic north/south direction, now hit it several times. It will eventually take on the earths magnetic field as it's own.
No magnet is permanently magnetised. If it is dropped from a great height enough times or heated, it loses it's magentism.
The bar magnet is what is termed a permanent magnet . This means that it is "always on" and can be used to do things like pick up paper clips. The electromagnet is created by winding a coil of wire about a ferromagnetic core and running a direct current through that coil. Only when the current is flowing will the electromagnet be operating. With the current switched off, the magnetic field around the coil of… Read More
Our planet behaves as though a giant bar magnet is buried deep within the earth, and lying slightly out of alignment with the earth's axis of rotation. The points where this imaginary bar magnet's magnetic field lies perpendicular to the earth are named Magnetic North and Magnetic South respectively. These points do not coincide with the earth's geographic poles, which are called True North and True South respectively. It's very important to understand that 'Magnetic… Read More
the magnetic domains are no longer aligned, i.e. they will no longer all point in the same direction as they more upon impact
If it can be magnetized you can heat it up past its' Currie point and let it cool down in a magnetic field. You can swipe a magnet along it in the same direction several times to magnetize it. That aligns the magnetic domains in the material.
The Earth is not a magnet. Its magnetic field is generated by electrical currents generated in the interior; or rather by the net sum of a number of separate electrical current processes. Nor is the strength or direction of the magnetic field fixed; it varies with time, and is well known to have reversed in polarity many times. The 'axis' of the Earth's magnetic field is not coincident with the spin axis - it is… Read More
I don't think this is possible. All magnetism is somehow related to the flow of current; in a permanent magnet, the electrons orbiting around the atoms counts as a "current". If you want to make magnet, point a iron bar towards magnetic north if you are in the northern hemisphere or towards magnetic south pole if you live in the southern hemisphere, then strike the bar on the end with a hammer several times. The… Read More
A nail can be magnetized by being hit with a magnet 50 or so times, alternately, if a nail or other piece of metal which is attracted to magnets (these metals are called ferromagnetic by scientists) is left near a strong magnet for a long period of time (a few days to a few years depending on how strong the magnet is) it will become magnetic.
This has happened several times in the past at irregular intervals, so it seems likely it will happen again in the future.
rub against needle with strong magnet i guess 1. Hold a needle by the eye and stroke it gently 30 times with your magnet, in the same direction. Do the same with the second needle, making sure that you use the same end of the magnet. 2. Test your needle-magnets on some pins before you use them for other experiments.
Yes. Larger the magnet greater the magnetism. For example: Both the Sun and the Earth are powerful magnets. But the Sun's magnetism is 100 times greater than the magnetism of Earth. This is because the size of the Sun is also about 100 times greater than the Earth. Another Answer The intensity of a magnetic field is measured in terms of its flux density, which is defined as the flux per unit area. This corresponds… Read More
A magnet can be weakened by heat or dropping it alot of times
You can demagnetize a magnet by: -dropping it many times -heating it over a flame -hammering it many times
It's called a magnetic strip for a reason, and usually checkouts that use anti-theft devices will have a sign that says keep magnetic strips away from a certain area (the cashier usually rubs the item over the area to disable the device). You can do the same thing. Use a strong magnet, and rub it several times over the strip.
A note about terminology - magnetic energy is the energy stored in a magnetic field. I have never heard of magnetic power. However, I assume you are asking how to get electrical power from magnetic phenomena. The way this works is directly from maxwell's equations. Faraday's law says that the rate of change of flux through a loop (field through loop times area of loop) is proportional to the electric field around that loop, which… Read More
You can remagnetize a magnet by rubbing a good magnet along the bad one. Do this a few times. Be sure to rub the magnet in only one direction.
Drop the magnet from the table to the floor many times.
An Iron becomes a magnet when the iron piece is rubbed by a magnet continuously for more than fifty times.
They form by the cooling of ferrous rock at the time it transitions from a molten state to a solid state. The ferrous particles are trapped in the orientation of the earths current magnetic field. The earths magnetic field alternates every certain number of years (a huge number like 500,000 years.) Since rock will cool at different times alternating layers of rock can have a completely opposite magnetic orientation. They are useful because you can… Read More
it doesn't, it points to Magnetic North which is somewhere in the north of Canada. A compass may point 20 degrees or more different from geographic north. The North pole of a magnet will point to magnetic north. The next question is why is the Earth magnetic, and why does it have a south pole magnetic near the North pole. I haven't seen a really good explanation. Something to do with the centre of the… Read More
No it is not magnetic. However often times nickel is underneath rhodium plating on jewelry causing a magnetic attraction. : )
it represents the fact that the magnetic poles of the Earth must "flip" from time to time - the iron in the magma that cools to become the ocean floor aligns with the poles so stripping would show that the poles have changed direction over time. Some scientists suggest the times when the poles "flip" match up with cataclysmic events in the Earths geologic history.
To find north you will need the magnet, a needle, a piece of very thin paper & a bucket of water. First you need to take the positive side of the magnet and slide it across the first half of the needle, as if you were striking a match, fifty times. Then do the same with the negative side of the magnet and the other side of the needle. Afterwards, put the needle in the… Read More
stroke a magnet over a magnet responsive metal 1,000's of times in the same direction.
A magnetic field is a field created as a result of some type of uniform motions of charges. Take the electron, the basic "moving charge" we know so well. When an electron moves (or when any charge particle moves), it generates a magnetic field around its path of travel. Every time. All the time. It cannot be helped. And when electrons move in a conductor, and the conductor is wound around a ferromagnetic core, we… Read More
Jupiter's magnetic field is about 20,000 times as strong as Earth's
3 times: regular match, hell in a cell, and a casket match
Use the magnet to stroke the iron nail many times and you try to attract something