Simplify the following text for a Grade 7 native English-speaking person.
Original: The effects of static electricity are familiar to most people because we can feel , hear , and even see the spark as the excess charge is neutralized when brought close to a large electrical conductor ( for example , a path to ground ) , or a region with an excess charge of the opposite polarity ( positive or negative ) .
Simplified: The effects of static electricity are familiar to most people because they can see , feel and even hear the spark . This spark happen when the excess charge is neutralized .