Scatter iron filings around a bar magnet and a pattern of curves leaps into view. Those curves are a map of where, and how strongly, the magnet can push on another pole. A small compass lets you trace them one arrow at a time.
A magnetic field is the region around a magnet where a magnetic force acts. Field lines run from the north pole to the south pole outside the magnet, never cross, and are closest together where the field is strongest, near the poles. A compass needle points along the field line.
A magnetic field is the region around a magnet where a magnetic pole experiences a force. Field lines point from the north pole to the south pole outside the magnet, and the closer the lines, the stronger the field.
A plotting compass needle lines up along the field line, pointing in the direction of the field.
Move the compass around the magnet and watch the needle line up with the field at each point.
Four quick checks. Each correct answer earns XP and lights this skill on your star map.
Outside a bar magnet, the field lines point...
Where the field lines are closer together, the field is...
A plotting compass placed in a magnetic field has its needle...
A magnetic field is...
The spacing of the lines tells you the strength, and the arrows tell you the direction.
Outside the magnet the arrows on the field lines point from north to south. The lines never cross, and where they crowd together, near the poles, the field is strongest.
Unlocks once the four checks above are done. Worth more XP, written in the style of Paper 2.
The magnetic field of a bar magnet is strongest...
Field lines around a magnet are drawn and one pair is shown crossing. This must be wrong because field lines...
A compass is placed just off the north pole of a bar magnet. Its needle points...
Magnetic fields are mapped. Keep the chain going.