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What else can I help you with?
Is a compass accurate?
the compass can be very accurate once the correct steps are taken when using it =) ty
What happen to iron bearing minerals that are heated at curie point?
Iron-bearing minerals lose their magnetic properties when heated to the Curie point, which is around 770°C for iron. At this temperature, the atomic magnetic moments become disordered and the material becomes non-magnetic. Once cooled back down below the Curie point, the mineral may regain its magnetic properties.
Can a magnet attract to a demagnetized iron rod?
Yes. In this case, the magnet will induce magnetism in the iron, which is originally unmagnetized. Once the magnet is removed, the iron may return to an unmagnetized state; unless the magnetic field near the piece of iron is very strong.
Is iron a permanent magnet?
No, iron is not a permanent magnet. It can be magnetized in the presence of a magnetic field but will lose its magnetism once the external magnetic field is removed. Permanent magnets, on the other hand, retain their magnetism without the need for an external magnetic field.
How can magnetism be induced in non-magnetic iron?
Iron can be demagnetised by heating for an extended period of time. _______________________________________________________________ You have to melt it and and allow it to re-solidify and it will be demagnetized. If you heat it to near melting and allow it to stay that hot for awhile then it will demagnetize of time (this is because bits of it will be hot enough to melt and demagnetize and that heat will disperse somewhere else to demagnetize a different spont). The temperature at which a ferromagnetic material, which is a material that retains an applied external magnetic field (like iron), loses its magnetization is called the Curie temperature.
Is soft iron magnetic?
Yes, soft iron is magnetic. Soft iron has high magnetic permeability, which means it can easily generate a magnetic field when exposed to an external magnetic field. However, soft iron loses its magnetism once the external magnetic field is removed.
Does a compass remain stable or it fluctuate?
A compass is stable in it's attraction to a specific magnetic pole. Any instability detected is the fluctuation of the always moving magnetic field. Or probably more typically has been induced by vibration of the compass
Name 3 magnetic metals?
All ferrous metals like iron, steel and to some extent stainless steel. Nickel and cobalt are magnetic too. Apart from these there are rare magnetic earths or rocks like 'neodymium'. Magnetite, which was first used by man as a magnetic material (for compass-like purposes) is an oxide of iron. In New Zealand all our "copper" coins are magnetic. This would apply to the coins of any country where they contain high levels of nickel. I once lived on a property in Queensland where lumps of 'gravel' would often cling to my spade ... the soil was heavily laden with magnetite!
What metal has the lowest magnetic retentivity?
Generally, non-magnetic metals like aluminum and copper have low magnetic retentivity compared to magnetic materials like iron and nickel. They do not retain magnetism once a magnetic field is removed.
How can a piece of iron be induced into becoming magnetized?
A piece of iron can be induced to become magnetized by placing it in a magnetic field. The magnetic field aligns the magnetic domains within the iron, creating a net magnetic field in the same direction as the applied field. Once the external magnetic field is removed, the iron will retain some level of magnetization.
How can iron become a magnet?
Iron can become a magnet when its magnetic domains align in the same direction. This can happen when iron is placed in a magnetic field, causing its domains to line up and create a magnetic field of its own. Once aligned, the iron will remain magnetized even after the external magnetic field is removed.
Iron nails can be made into magnets because of their?
Iron nails can be made into magnets because of their ferromagnetic properties, meaning they can be magnetized and retain the magnetic field once aligned. When exposed to a magnetic field, the domains within the iron align, creating a magnetic field that persists even after the external field is removed.
Why would lightning storms change the direction of a ships compass needle?
Lightning can create a strong magnetic field when it strikes a ship, causing the ship's compass needle to temporarily change direction. The intense electromagnetic field generated by the lightning can interfere with the magnetic field that the compass relies on for navigation. Once the lightning subsides, the compass should return to its normal direction.
How do you adjust for magnetic declination when navigating with a compass?
To adjust for magnetic declination when navigating with a compass, you need to determine the angle between true north and magnetic north in your location. This angle varies depending on where you are on the Earth's surface. Once you know the declination angle, you can either add or subtract it from the compass reading to find the correct direction. This adjustment ensures that you are navigating accurately and heading in the right direction.
If iron is heated and then cooled can a magnet still attract?
Yes, heating and then cooling iron can affect its magnetic properties. This process can lead to the iron losing its magnetism temporarily or becoming slightly demagnetized, but it can regain its magnetic properties once exposed to a magnetic field again.
How could you magnetise a needle to make your own compass?
Rub the needle across a magnetic surface...always in the same direction, don't go back and forth. This will magnetise the needle. Then float the needle in a dish of water. And presto you have your own compass
Is a compass accurate?
the compass can be very accurate once the correct steps are taken when using it =) ty
