1. Dangerous Sports
Which are the most dangerous sports in a thunderstorm? Can you explain why?

2. Surviving Lightning
Lightning is caused when the charge on the cloud is connected to Earth – We say the charge is Earthed. The charge will take the easiest route. Air is a bad conductor. Most other materials are better conductors.
A small current (.05A) through the heart is enough to stop it.
Why is a prayer position the best position to adopt in a lightning storm?

3. 4.3 Uses and dangers of static electricity
15 April 2017
4.3 Uses and dangers of static electricity
Static electricity is used in paint spraying, electrostatic precipitators (reducing pollution) and photocopiers.
It can cause explosions when sparks are produced.

4. Are you ever shocked by static electricity?
Can you explain when and where this happens?
A spark from a fuel tanker was thought to have started the Buncefield oil depot fire in The explosion was reported to have been heard in the Netherlands!

5. Using static electricity
Electrostatic paint sprayer.
Metal panels are painted
using charged paint. The
panel is made negative
and the paint positive. + - - + -
Why are they given opposite charges?
Page 91/92 AQA Additional Science guides. Read the descriptions of how a smoke precipitator works and a photocopier. Explain both in your books.

6. Dangers of static electricity
15 April 2017
Dangers of static electricity
A moving powder or liquid can charge pipes. This can cause a spark which might explode the substance.
Some anaesthetic gases are explosive. Operating theatres have an antistatic floor to stop charge building up.
Questions
Why is the rubber hose of a petrol pump made of a conducting rubber?
Why must a petrol tanker be earthed before delivering fuel?

7. 4.3 Uses and dangers of static electricity
15 April 2017
4.3 Uses and dangers of static electricity
Static electricity is used in paint spraying, electrostatic precipitators (reducing pollution) and photocopiers.
It can cause explosions when sparks are produced.