Bring two magnets together and they either snap shut or push your hands apart, depending on which ends you offer. That push and pull, acting across a gap with nothing touching, is the first clue to how magnetism works.
Every magnet has a north pole and a south pole. Like poles repel and unlike poles attract, and the force acts at a distance without contact. Repulsion is the only sure test that a material is itself a magnet.
A magnet has a north pole and a south pole. Like poles repel and unlike poles attract, and this force is a non-contact force.
A magnet also attracts an unmagnetised magnetic material, so only repulsion proves a material is magnetised.
Bring poles together and apart, and watch whether they attract or repel.
Four quick checks. Each correct answer earns XP and lights this skill on your star map.
Two north poles brought close together will...
A north pole and a south pole brought together will...
The force between two magnetic poles is...
The only certain test that a steel bar is a magnet is that it...
Two magnets can attract or repel, but a magnet also attracts plain iron, so only repulsion is a true test.
Repulsion is the only certain test that a material is magnetised. Attraction is not enough, because a magnet also attracts an unmagnetised magnetic material such as iron.
Unlocks once the four checks above are done. Worth more XP, written in the style of Paper 2.
A bar X attracts both a steel paperclip and one end of a known magnet, but repels the other end of that magnet. This shows that X is...
Two bars attract each other whichever ends are presented. The bars are...
The south pole of a magnet is brought near the north pole of another. They...
The first magnetism skill is lit. Keep the chain going.