Whenever we have the movement of objects or the flow of fluids, we are in danger of building up a static charge. If the charge becomes too great then it may jump between conductors creating a __________. This is called __________.
If the spark/arc is near something __________ then this can ignite it. This principle is used in lighting gas hobs.
To prevent the charge building up, objects should be earthed. This consists of a conductor connecting the object to __________. Any build up of charge can then flow there without causing a __________.
Examples of hazards include: