PHYSICS RESEARCH HELP!Hey guys please help me with my research...please bear with a friend in need...thanks!?

Question

1. Where are magnetic poles located on a common bar magnet?
2. In what way are magnetic poles very different from electric charges?
3. What is a magnetic domain?
4. Why is iron magnetic and wood not?
5. What happens to the bottom of the magnetic field about an electric current when the direct current is reversed?
6. Why are electromagnets stronger when constructed with super conducting coils?
7. What effect does the magnetic field about the earth have on cosmic ray bombardment?
8. What happens to the direction of deflection when the current in a wire is reversed?
9. What is the function of a galvanometer?
10. What is a galvanometer called when calibrated to read current and voltage?
11. In what way does the galvanometer is similar to the electric motor?
12. What does the magnetic declination mean?
13. What are magnetic pole reversals?
14. What are the Van Allen Radiation Belts?
15. What is the cause of Aurora Borealis?

Answer 1

Not asking for much then?
Okay:
1. The magnetic poles are considered to be at the ends of the magnet. If you cut it in half, the two smaller magnets you get will also have poles at their ends. This brings us on to 2.
2. Magnetism relates to moving charges, while electrostatics relates to static charges, but the big distinction is that, whereas a charge can exist in isolation- a proton for example has a net positive charge; magnetic poles CANNOT. At least, no-one has ever discovered one. As I said in part 1, if you chop a magnet in half, you get two smaller magnets, with north and south poles. You do not get a bit with only a south pole, and a bit with only a north pole.
3. The magnetic domain is a region in a materia, in which all the atoms have aligned their individual magnetic fields.
4. Iron is a material in which all the atoms can have their magnetic fields aligned. Wood can't do that, as it is a complex molecular material, rather than a crystal lattice, and it is not composed of atoms with ferromagnetic properties. (http://en.wikipedia.org/wiki/Ferromagnetism#Physical_origin).
5. Reversing the current will invert (switch), the north and south poles of the electromagnet.
6. The field strength is directly proportional to the current in the coil. For a given voltage, the current is inversely proportional to the resistance. So, less resistance = more current = stronger field.
The resistance of a superconductor is essentially zero.
7. It redirects charged particles towards the earth's
poles, where they tend to spew back out into space, along the earth's axis.
8. If you reverse the current in a magnet, it is exactly the same as keeping the current the same, but turning the magnet and everything associated with it upside down. So, inverting current inverts everything else.
9. It is a device for measuring electric current.
10. I don't know. Sorry.
11. Both devices use the effect of electric current on magnetic field to cause movement. One turns a motor, the other moves a needle on a meter.
12. The geographic North pole is the north end of the axis on which the earth spins. The magnetic north pole is a few miles away from it however, so a compass does not point to the geographic north pole. The declination, is the angle between where your compass is pointing (magnetic north), and where the north pole really is (true north).
13. Apparently, on various occasions in the distant past, the earth's magnetic field has reversed itself, so that north is south and south is north.
14. The earth's magnetic field redirects those particles from the sun away from the earth's surface, but as a result, they form belts of radiation above the atmosphere. These are the Van Allen belts.
15. Some of those charged particles in the van allen region, collide with the atmosphere, causing it to glow. This is the aurora.

Answer 2

Your mom said so

Answer 3

please consider going through http://www.wikipedia.org , www.britannica.com and other sites. This stuff is pretty basic, try to do your homework yourself !