What tiny particles move between materials when a balloon is rubbed with a cloth?

What is the name for a buildup of electric charge on an object?

Use the plus and minus symbols in the diagram. What is Object A's overall electrical state?

Examine Object B's plus and minus symbols. What overall charge does it carry?

A rod starts with balanced charges, then loses some particles carrying minus signs. What overall charge does it gain?

The suspended objects in the diagram are free to swing. How will their electrical interaction affect their separation?

Read the charge symbols on the two objects. What happens when they are brought near each other?

Two small charged objects keep their charges. How does the electric force between them usually change when their distance decreases?

When a rubber balloon is rubbed with wool, what usually happens to electrons?

A negatively charged balloon approaches the neutral wall shown. How will the wall's charges become arranged near the balloon?

After rubbing a balloon on her hair, Ana notices individual strands spreading apart. Why do the strands separate?

A rubbed plastic rod approaches small uncharged foam pieces without touching them. What effect can it have?

Would a balloon-and-cloth experiment usually hold its charge better on a dry day or a humid day?

Two rubbed balloons hang apart. What should Paolo do to help remove their charge so they hang together again?

A negatively charged balloon approaches a neutral aluminum can. Which movement inside the can helps it roll toward the balloon?

A thin water stream bends toward a negatively charged balloon. At the same distance, how would an equally positively charged balloon affect it?

Small paper scraps jump onto a rubbed comb. Must the scraps have an overall charge before the comb approaches?

A rubbed balloon sticks to a wall, then gradually loses its excess charge. What happens to the electrical pull holding it there?

After walking across a carpet, Ben touches a metal doorknob and feels a brief shock. What happens during the shock?

Which plan fairly compares how wool and cotton charge identical, initially uncharged balloons?