3-ELE-02

Outcomes

• Pupils can predict whether the charges will attract or repel
• Pupils can describe dangers and uses of electrostatic charge

Specification References

2.20 recall that insulating materials can be charged by friction 2.21 explain that positive and negative electrostatic charges are produced on materials by the loss and gain of electrons 2.22 recall that there are forces of attraction between unlike charges and forces of repulsion between like charges 2.23 explain electrostatic phenomena in terms of the movement of electrons 2.24 recall the potential dangers of electrostatic charges, e.g. when fuelling aircraft and tankers 2.25 recall some uses of electrostatic charges, e.g. in photocopiers and inkjet printers

Starter

• Revise previos lesson (basics of electrostatics)

Main Body of Lesson

• VDG demos; hair standing, flying pie dish (+ rice crispies), fluorescent tube, Barbie head, candle, Bunsen lighting, discharging
• Uses and dangers of static charge; photocopier, ink jet printer, car spraying, precipitator, refuelling aircraft, paper mill)

Plenary

• Application of electrostatic concepts to real life uses and dangers

Additional Information

Resources Required

• VDG and accesories
• Wimshurst machine

Safety/Hazards

• Beware pacemakes, heart conditions, cochlea implants etc.
• No "human capacitors"