Magnets

Question 1

Magnetism

Answer 1

An attraction or repulsion between objects caused by the motion of electric charges

Question 2

Ferrous materials

Answer 2

A metal that contains iron with small magnetic domains e.g iron, cobalt, nickel

Question 3

Domains

Answer 3

Regions of a magnet where the charges are all lined up. Mini magnet because it has a north and south pole

Question 4

Magnetic field

Answer 4

A 3D area in which a magnet has affect which is created when domains are lined up

Question 5

Temporary magnetism

Answer 5

A material that becomes magnetic when exposed to a magnetic field but loses it after it is removed

Question 6

Diagram of magnets

Answer 6

Arrows go from north to south. Geographical north = magnetic south. Closer lines = stronger magnetism. Strongest at the poles.

Question 7

Example of magnets on domains

Answer 7

If the north pole of a magnet hit a piece of iron, the south poles of its domains would be attracted to the magnet

Question 8

Electromagnet

Answer 8

A temporary magnet magnetized by running an electric current through or around it

Question 9

Electromagnetism

Answer 9

Pushes and pulls electrons resulting in faster moving electrons which is higher levels of magnetism

Question 10

Ways to increase strength of elecromagnet

Answer 10

More coils around the ferrous material, increased voltage and current

Question 11

Current

Answer 11

Amount of charge in a circuit will always take the path with the least resistance. The number of electrons passing a given point in one second and measured with an ammeter

Question 12

Voltage

Answer 12

Difference of potential energy when a current flows through a component and measured with a voltmeter

Question 13

Short circuit

Answer 13

Created when current flows down an unintended path with little to no resistance. Can cause fires and shocks