..get a compass?
Have you ever seen a magnet? Did you see the field? There you go. While you can't see the field itself directly, you can see the effects of the field if you use iron filings or something like that; they'll line up with the magnetic field lines
The Earths magnetic field is generated by the cores fluid metal rotating like a dynamo. The fields generated make an impressive electromagnet. We use it for navigation. The Aurora Borealis is caused when cosmic rays strike it. That aids our understanding of both cosmic radiation and the flux density of the field.
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You can show that the Earth has a magnetic field by looking at a magnetic compass.The north end of the compass points to the north magnetic pole, and does so everywhere on Earth. It does this by aligning itself to the Earth's magnetic field. If there weren't a magnetic field, then a compass needle would not point to any consistent direction.See related links.
a magnetic field that is produced by flowing electrons
Compasses use the magnetic field to navigate always pointing North.
You can't. The only thing the earth's magnetic field can tell you is the direction from where you are toward the earth's magnetic pole. That doesn't tell you anything about where you are.
Earth's magnetic field created by earths magnets deflects cosmic rays which damage our biosphere.
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One navigation guide for animals during migration is the earths magnetic field. Many animals are sensitive to the magnetic fields and use them in navigation. The invention of cellphones with their towers are beginning to cause issues with some migrations due to the altered magnetic field around them.
non the compass uses the earths magnetic field that is why the north pole and south pole is the most important directions because the north and south pole have the most highest magnetic feilds
You can use a magnetic field to move salt water. Magnetohydrodynamics.
Have you ever seen a magnet? Did you see the field? There you go. While you can't see the field itself directly, you can see the effects of the field if you use iron filings or something like that; they'll line up with the magnetic field lines
You can make magnetic field lines with a magnet. You an use a permanent magnet, or an electromagnet.
a compass
Magnetic compasses will become unuseful when near a magnetic field.
Many (but not all) birds, fish,, insects, etc. have the ability to sense earth's magnetic field. They use this ability for navigation purposes, much as we use magnetic compases.