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A compass would do a good job, but it only gives you a local picture. You would have to walk the compass and record the needle direction to map the field.
Another way for a bigger picture -- scatter fine iron particles on a flat surface; they will align themselves more or less along the magnetic lines. Gentle tapping on the surface will help speed up the process.
add It is worth noting that the lines of magnetic force repel each other. This is why they spread out towards spherical away from the poles.
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Why can't electricity pass threw a magnetic field?
An electric current has no trouble at all passing through a magnetic field, however it is deflected. This is how the old CRT picture tubes that used to be used in TVs and computer monitors operated. In space electric currents deflected by magnetic fields actually follow helical paths along the lines of magnetic flux.
Why do orienteering maps have magnetic North Pole instead of the true North Pole?
That is because the map is used with a magnetic compass. Since the needle on the compass points in the direction of magnetic north it is easier to use the map with the compass if the lines drawn on the map indicate magnetic north.
How can you see magnetic lines?
The magnetic lines of force are invisible, you can not see them; but you can do the following experiment that will show you the effect that the magnetic lines of force have on iron filings.Here is a simple experiment to observe magnetic lines of force from a magnet.Take a piece of cardboard and tape a bar magnet on one side.Now flip over the board and keep it horizontal such that the magnet is on the lower side.Place some white paper on top of the board and use clips, staples, tape or glue to keep it in place.Now lightly sprinkle some iron filings on the paper. They would arrange themselves randomly at first.Now, keep tapping the edge of the board very lightly, just enough to make the iron filings move a little.After a while, you will see the iron filings arrange themselves in a pattern. The pattern will be made up of somewhat elliptical (or circular) lines from one pole of the magnet to the other.These lines are where the invisible magnetic lines of force are located.They never intersect each other because the magnetic field of the magnet acts to repel each other.
Why does the compass point north in the southern hemisphere?
The direction of magnetic flux or lines of force is from north polarity to south polarity, and a compass needle will always align with that direction, wherever it is used. Since the magnetic polarity of the location we call Magnetic North is a south, a compass needle will point in that direction.
Which tool would be used to find information on which cations or anions will replace othe cations or anions in a chemical reaction?
A tool that would be used to find information on which cations or anions will replace others in a chemical reaction is a displacement table.
Where in the Earth do magnetic fields occur?
Magnetic field lines are not a real observable thing, they are a tool used in physics to picture magnetic fields. A magnetic field is a continuous entity; it has no discrete force lines.
Function of a magnetic compass?
The function of a magnetic compass is to show the direction toward the magnetic poles of the Earth. It is used as a navigation tool.
What European invention helped tell explorers in what directions they were traveling?
they used astrolabes, which is a tool that help you use the sun and stars find your location, and they used magnetic compasses.
What tool can be used to construct parallel lines?
ruler
What best describes magnetic field lines?
Magnetic fields are produced because of moving electric charges, and visualizing the very complex mathematical relationships that fall under the magnetic field might become much easier if magnetic field lines were used. A higher density of field lines means a stronger magnetic field. Keep in mind that those lines do not actually exist; they are drawn only to visualize the strength of the magnetic field.
What tool is used to make long straight lines?
Ruler
What type of filing that's most often used to demonstrate the lines of magnetic force around a magnet is?
Iron filings will demonstrate the lines of magnetic force around a magnet.
What is a tool that always points north used in the 15th century?
The answer you are looking for is 'magnetic compass'.
What is used to represent magnetic field lines on a diagram?
Curved lines are used to represent magnetic field lines. The closer together they are, the stronger the magnetic field. Arrows are added to show the direction a north pole would move if placed at that point.
What tool is used for marking straight lines on wood?
A sharp pencil or a scribe.
A compass is a scientific instrument used to locate the what?
The magnetic north pole of the Earth.add. Actually the compass aligns itself with the lines of magnetic force at your location. From this we may infer the direction of the magnetic poles.
What sewing tool is used to transfer marks such as dart lines to the fabric?
a tracing wheel
