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If an object has the same number of positive and negative charges, its electrical charge is...

• positive
• negative
• neutral or no charge
• opposite

What can happen when you touch a metal doorknob after rubbing your shoes on the carpet?

• The doorknob sends a burst of electric current into your body

• Millions of electrons go from your finger into the doorknob

• Our negatively charged body becomes positively charged

• Our finger becomes negatively charged

Which of the following is caused by static electricity?

• a magnet attracts a paper clip

• glue holds two pieces of paper together

• socks taken from a clothes dryer stick together

• ice sticks to a cars windshield on a cold winter day

What is static electricity caused by?

• A balance of power

• A balance of positive and negative charges

• An imbalance of positive and negative charges

• An imbalance of protons and neutrons

Lightning is _____.

• a buildup of neutrons
• harmless
• a high-voltage electric current
• a large discharge of static electricity

What makes a charged balloon stick to the wall?

• Protons transferred to the balloon when it was rubbed on metal.
• Extra electrons on the surface of the balloon push away electrons in the wall, leaving a positively charged area.
• The rubber in the balloon has a magnetic field that pulls on the wood in the wall.
• Electricity in the balloon creates a magnetic field that attracts the metal in the wall.