Magnetism Flashcards
what is electric force?
it arises from charge…it either attracts or repels
what is magnetism?
phenomena caused by a magnet.
what forms a magnetic field?
moving electrons
what is a magnet?
an object that can exert a force on other objects containing Iron, Nickel or Cobalt
name the two poles of a magnet
north and south
what is the north pole of a magnet actually attracted to? (like in a compass)
the geographic north…which is actually the magnetic south
do like poles in a magnet attract or repel?
repel
as distance between poles increases, the magnetic force….
decreases
what causes earth’s magnetic field?
moving molten iron in the outer core. it shields us from space debris and radiation
what happens if you cut a magnet exactly at it’s poles?
it’ll create two smaller magnets with two poles
when it comes to magnetism, list the three types of substances.
non magnetic
magnetic
ferromagnetic
describe a non magnetic material
it’s not attracted nor repelled by a magnet
describe a magnetic material
it could be attracted or repelled by a bar magnet
describe a ferromagnetic material
it’s attracted by a magnet. it could be magnetized temporarily and must contain iron, cobalt or nickel
what are magnetic fields?
the space around a magnet where its forces are felt. it has a direction: it points away from north towards south
