Static Electricty

• What leads to static electricity when insulators are rubbed together?

  Movement of electrons from one insulator to another
• What happens to a man's hair when he holds a Van de Graaff generator?

  His hair stands on end
• Why are metals considered good conductors of electricity?

  Electrons can easily flow through metals
• Why can't electrons move through insulators like cloth?

  Electrons cannot move through them
• What happens when plastic is rubbed with cloth?

  Electrons move from plastic to cloth
• What charge does cloth acquire after rubbing with plastic?

  Overall negative charge
• What charge does plastic have after losing electrons?

  Overall positive charge
• What is static electricity?

  Charge build-up due to electron movement
• What can cause an electric shock after walking on a carpet?

  Static electricity build-up
• What happens to the top region of the Van de Graaff generator over time?

  It becomes positively charged
• What role does the metal dome of the Van de Graaff generator play?

  Stores positive charge and spreads it out
• Why does the man's hair repel each other when he holds the generator?

  They are all positively charged
• Under what condition can static electricity cause a spark?

  When electrostatic charge builds up
• Why are both the refueling truck and airplane earthed?

  To prevent charge build-up and sparks
• What is the overall charge of the cloth after rubbing with plastic?

  Negative charge
• What is the overall charge of the plastic after rubbing with cloth?

  Positive charge
• What is the effect of static electricity on a person's hair?

  Hair strands repel each other
• How does the Van de Graaff generator demonstrate static electricity?

  It transfers electrons to create charge
• What can happen if static electricity builds up during aircraft refueling?

  A spark can trigger an explosion
• What is the charge of the top roller in the Van de Graaff generator?

  Positive charge
• What happens to electrons in the Van de Graaff generator's moving belt?


  They pass from the top roller to the belt
• How does the Van de Graaff generator demonstrate the principle of static electricity?

  By transferring electrons to create charge
• What is the significance of the belt in the Van de Graaff generator?

  It transfers electrons to create charge
• What is the charge of the bottom roller in the Van de Graaff generator?

  Neutral charge
• What happens to the charge on the dome of the Van de Graaff generator?

  It allows positive charge to spread out
• How does the Van de Graaff generator demonstrate the concept of charge distribution?

  By allowing charge to spread across the dome
• What is the relationship between static electricity and electric fields?

  Static electricity creates electric fields around charges
• What is the effect of static electricity on objects?

  It can cause attraction or repulsion
• How can static electricity be dangerous during refueling?

  It can cause sparks that ignite fuel
• What precautions are taken to prevent static electricity during aircraft refueling?

  Both the truck and airplane are earthed
• What is the role of earthing in preventing static electricity hazards?

  It prevents charge build-up and sparks
• What is the charge of the cloth after rubbing with plastic?

  Negative charge
• What is the charge of the plastic after rubbing with cloth?

  Positive charge
• What happens to the hair on a person holding a Van de Graaff generator?

  It stands on end due to repulsion
• How does the Van de Graaff generator illustrate the principles of static electricity?

  By transferring electrons to create charge
• What is the significance of the charge on the dome of the Van de Graaff generator?

  It allows charge to spread out evenly
• What is the overall charge of the plastic after rubbing with cloth?

  Positive charge
• What can happen if static electricity builds up during aircraft refueling?

  A spark can trigger an explosion
• What precautions are taken to prevent static electricity during aircraft refueling?

  Both the truck and airplane are earthed
• What is the role of earthing in preventing static electricity hazards?

  It prevents charge build-up and sparks