Science (086) — AI-generated practice question

The curved pattern of iron filings reveals that a magnetic field exists in the region surrounding the magnet. This region, where the magnet's force can be detected, is called the magnetic field, and the curved lines traced by the filings are the magnetic field lines.

The filings align this way because the magnet exerts a force on them in the surrounding region. Each iron filing behaves like a tiny magnet and orients itself along the field lines — emerging from the north pole and merging into the south pole. Where the filings (field lines) are closer together, the magnetic field is stronger.

Source: Chapter 12, Section 12.1 – Magnetic Field and Field Lines (Activity 12.2)

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• 3 marks = ~3 key points: (1) the pattern shows a magnetic field exists around the magnet, (2) filings align because the magnet exerts a force on them, (3) the lines go from north to south pole / closeness shows field strength.
• Always use the term magnetic field lines — examiners look for correct terminology.
• Do NOT over-explain; the answer above is the right length. Adding more risks wasting time and doesn't earn extra marks.