| A | B |
|---|
| magnet | is a material that attract iron and materials that contain iron |
| magnetic pole | the ends of a magnetic object, where the magnetic force is the strongest |
| magnetic force | a force produced when magnetic poles interact |
| magnetic field | the region around a magnet where the magnetic force is exerted |
| magnetic field lines | invisible lines that map out the magnetic field aound a magnet |
| atom | the smallest partical of an element |
| element | one of about 100 basic materials that make up all matter |
| nucleus | the core at the center of every atom |
| proton | a positively charged particle that is part of an atom's nucleus |
| neutron | the small uncharged particle that is found in the nucleus of an atom |
| electron | a negatively charged particle that is found outside the nucleus of an atom |
| magnetic domain | a region in which the magnetic fields of all atoms are lined up in the same direction |
| ferromagenetic material | a material that is strongly attracted to a magnet and which can be made into a magnet |
| temerary magnet | a magnet made from a material that easily loses its magnetism |
| permanent magnet | a magnet made of a material that keeps its magnetism |
| compass | a device with a magnetized needle that can spin freely |
| magnetic declination | the angle between geographic north and the north to which a compass needle points |
| van allen belts | two doughnut-shaped regions 1,00 to 25,000 kilometers above Earth that contain electron and protrons traveling at high speeds |
| solar winds | streams of electrically charged particles flowing at high speeds from the sun; solar wind pushed against Earth's magnetic field and surrounds it |
| mangetosphere | the region of Earth's magnetic field shaped by the solar wind |
| aurora | the glowing region produced by the interaction of charged particles from the sun and atoms in the atmosphere |
