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ok for starters all magnets have a posative + and a negative - end these simbalise the magnetic charge of the magnet. blue is negative and red is posative. ok
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How does a magnetized needle work?
The magnetic field of earth exerts a torque on the needle, pulling one end or pole of the needle toward the Earth's North magnetic pole, and the other toward the South magnetic. The needle is mounted on a low-friction pivot point, in better magnetized needle a jewel bearing, so it can turn easily. When the magnetized needle is held level, the needle turns until, after a few seconds to allow oscillations to die out, one end points toward the North magnetic pole.
What makes the needle in a compass move?
When the needle of a compass points in a certain direction that means that the poles of earth have alined it so the point is pointing to the north pole (because earth is a magnet) so In conclusion the poles of earth are being attracted to the opposite pole of the needle because opposites attract and the needles in compasses are designed to point the "pointy" part at the north pole. (pretty smart for an 11year old). To be a little more technical, all magnets have a magnetic field going out from its North Pole and entering back in at its South Pole. When in another magnetic field, the fields will exert a force to try to align the field lines. If near a ferromagnetic material, such as iron, the field lines are distorted and exert a force between the magnet and the metal to realign the fields. Since the compass needle has a small mass, and easily spins, it is usually the object which will move.
What happens when a compass is near a magnet?
Then the compass would react according to the magnetic field of the magnet.Then the compass would react according to the magnetic field of the magnet.Then the compass would react according to the magnetic field of the magnet.Then the compass would react according to the magnetic field of the magnet.
How could magnetic rocks affect a compass and why?
In a regular magnetic compass, the needle is a magnet. One end is the south pole and the other end is the north pole. Magnets are affected by other magnets. If a magnet is placed near a magnetic compass, the north pole of the compass's needle is attracted by the south pole of the magnet, and the south pole of the compass's needle is attracted by the north pole of the magnet.
What is a magenetic field?
Magnetic field is the region where a magnetic material such as iron is getting influenced. When current flows through a conductor then magnetic field is created around it. Michael Faraday introduces the magnetic lines of force which are imaginary lines. These start from north pole and end at south pole. North and south poles cannot be isolated from one another. When we bring a small magnetic needle in a magnetic field it will be aligned in the direction of the magnetic field with its north-south poles parallel to the magnetic lines of force.
How does a magnetized needle work?
The magnetic field of earth exerts a torque on the needle, pulling one end or pole of the needle toward the Earth's North magnetic pole, and the other toward the South magnetic. The needle is mounted on a low-friction pivot point, in better magnetized needle a jewel bearing, so it can turn easily. When the magnetized needle is held level, the needle turns until, after a few seconds to allow oscillations to die out, one end points toward the North magnetic pole.
Which pole of a compass magnet is attracted to earth's magnetic north pole?
The pole of the compass that is attracted to the earth's magnetic north pole must be a south magnetic pole. But here's the thing. In the compass, the south magnetic pole of the needle is marked "N" because that end of the compass needle points to earth's magnetic north. The only way the needle can point to earth's magnetic north is if that end of the needle, the one marked with an "N" on it, is a magnetic south pole. It almost seems counter intuitive, but think it through and it will become clear.
Which pole of a compass magnet is attracted to Earth's magnetic north pole?
The pole of the compass that is attracted to the earth's magnetic north pole must be a south magnetic pole. But here's the thing. In the compass, the south magnetic pole of the needle is marked "N" because that end of the compass needle points to earth's magnetic north. The only way the needle can point to earth's magnetic north is if that end of the needle, the one marked with an "N" on it, is a magnetic south pole. It almost seems counter intuitive, but think it through and it will become clear.
Is a sewing needle magnetic?
Sewing needles are almost always made of steel, which is a magnetic alloy of iron, which is, itself, magnetic. Sometimes we put a bowl of water on the table, rub and tap a sewing needle with one end of a permanent magnet for a few seconds, float the needle on the water (a hint of oil on the needle might help), and construct a homemade magnetic compass.
What direction does the needle of a compass point?
One end points to magnetic north and the other end points to the south.
How does a compass work off of magnetism?
There is a magnetic field surrounding the Earth. The positive pole of this magnetic field (called the north magnetic pole) is near the North Pole. A compass has a freely rotating needle that is magnetized such that one end of the needle points toward the north magnetic pole.
At which end of a compass needle is there a north pole?
The red or pointy end of the needle is really the magnetic north pole, it will always point to the south pole of a bar magnet. Confusion occurs because the geographic north pole is really the earth's magnetic south pole.
What does the painted point of a compass always always point North?
The painted end of the compass needle is magnetized. That magnetism is drawn toward the earth's magnetic field, which is to the north.AnswerA compass needle is a tiny magnet, with a north pole and a south pole. These poles are named after the direction in which they point, so the 'painted end' (north) of a compass needle points north because the needle aligns itself with the earth's magnetic field. Magnetic North is the name given to a location, close to True North, whose magnetic polarity is south -which is whyit attracts the north pole of the compass needle.
What if a magnetic needle is kept in a non uniform magnetic field?
A magnetic needle kept in uniform magnetic field will experience zero net force but non-zero net torque........Since the magnetic lines are uniform,the force acting on each end of the needlewill be equal and opposite.So it will cancel each other resulting zero net force.
How can you tell which is the North Pole on a magnet if it is not marked?
A magnet's north pole will attract the south pole of a compass needle (i.e. the end of the needle that points to Magnetic South).
What is the difference between an Australian compass and British compass?
The needle of a compass must be free to rotate so that it can point to magnetic north. The magnetic field of the earth not only rotates the compass needle horizontally but also pulls one end down. If it pulls the needle down it can stop it from turning freely so on many compasses the needle is balanced for use in a specific zone. There are 5 zones. Austraila and Britain are in different zones. This means the needle may not be level if used in the other's zone. Needles are balanced by making one end of the needle longer or by adding weight to one end of the needle.
What is the name given to the end of the compass that seeks the north?
First of all, it's important to understand that 'Magnetic North' is a location (or, more accurately, a direction), and not a magnetic polarity.The end of the compass needle (or magnet) that points in the direction of 'Magnetic North' was, for obvious reasons, originally called its 'North-seeking pole'. Over time, the term 'seeking' has fallen into disuse, and we now simply call it its 'north pole', which by general agreement is also the magnetic polarity of that end of the needle (or magnet). Because, unlike poles attract, this means that the magnetic polarity of the location we call 'Magnetic North' is south.
