Electromagnets using James Bond as a starting point - Lesson plan
Daniel Hannard teaches physics at Woodkirk High Specialist Science School in UK. Below he shares with us one of his favourite lesson plans: Electromagnets using James Bond as a starting point.
The objective of this lesson is to show that an electromagnet can be turned on and off, and to give the ways that an electromagnet can be made stronger, using a short extract from a James Bond film as a starting point.
- Show the pupils a “short, educational video clip”, likea extract from a James Bond film. Ask the pupils to spot where science is being used to solve a big problem.
- Questions & Answers:
- How can a magnet be turned on and off?
- What must Jaws’ teeth be made from? (not just any “metal”)
- What other uses do these type of magnets have?
- Introduce electromagnets with fields around straight wire and coil (use coil mounted on Perspex with plotting compasses on OHT to indicate field)
- Practical – pupils use equipment provided to build the strongest magnet possible (number of paperclips lifted). Use low voltage to avoid heating, shocks and damage to power packs
- Share ideas on how to increase strength – more turns, more current, soft iron core
- Return to Bond – demo with shop-bought electromagnet and model Jaws. Shark infested water optional. How has this magnet been made as strong as possible?