physica Flashcards
1
Q
what is a permanent magnet
A
a magnet that produces its own magnetic field/ always has a magnetic field
2
Q
what happens when you take a permanent magnet
A
all induced magnets loose all or most of their magnetism quickly
3
Q
what is an induced magnet
A
-an object that becomes a magnet when placed in a magnetic field
-induced magnetism always causes force of attraction
4
Q
4 types of magnetic material
A
iron, steel, colbalt, nickel can all be made into magnets induced or permanent
5
Q
what is a magnetic field
A
a region around a magnet where a force acts on a magnets or magnetic material
6
Q
what effects strength of magnetic field
A
the distance from the magnet
7
Q
how do you find direction of magnetic field
A
using a compass
8
Q
A
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15
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