Nothing - The polarity of an electromagnet depends on the direction of current flow and you can effect the same change in orientation to the earth's field by moving the electromagnet rather than the earth's field.
opposing magnets i guess?
This is FALSE. TWICE!The Earths magnetic Field is not Electromagnetic.A compass can be deflected by any Magnet.
Any magnet will always align itself to north south direction of earths magnetic field. Magnetic needle will always be perpendicular to the direction of current. Stronger magnets attracts weak magnets towards itself if the weak magnet is placed in stronger magnets magnetic field.
Earth's magnetic field created by earths magnets deflects cosmic rays which damage our biosphere.
It is done with a device that harnesses the earths magnetic field and separates the individual north pole and individual south pole magnets. You can read about it at GOD BASED MAGNETISM.
Most magnetic alloys are based on one or more of the following:ironnickelcobaltHigh field strength modern alloys also contain rare earth metals.
Earth's magnetic field can make magnets out of ferromagnetic material and it affects the movements of electrically charged particles in space.
The molten iron and medals inside the earths core are the reasons for the earths magnetic core.
magnets are used in everyday life lots like, sticking on your fridge, playing with, tapes, credit cards, door patches, to clip/hold things together, magnetic earings, to help find your keys, the tubes, you can even find a magnetic force in some animals as they are able to detect the earths magnetic field. ------------------------------------------------------------------------------------------------------------------ dude definitely the wrong answer for this question.
they can sense the earths magnetic field.
It is Earths' "Magnetosphere".
which of the list of rare earths are magnetic