Mrs. Morgan rubbed her feet on the carpet while wearing socks. She then touched the doorknob and felt a small shock. Why did Mrs. Morgan feel a shock when she touched the doorknob?
Because an electric charge was created when she rubbed her feet on the carpet.
Marc rubbed a balloon with a wool cloth to give it an electrical charge. He placed the balloon next to a wall. The balloon stuck to the wall. Explain why the balloon stuck to the wall.
The negative charges in the balloon were attracted to the positive charges in the wall causing it to stick.
Bob emptied the clothes dryer and noticed a sock and a shirt stuck together. Why did the items stick together?
Because the sock and shirt have different charges.
A student rubs a balloon against her hair and hears a crackling sound. She also notices that the balloon now sticks to her hair. Which explains these observations?
The opposite charges were transferred, causing the hair and balloon to pull on each other.
Annie wore a wool hat to school. When she took the hat off, her hair crackled and stood on end. Why did removing the hat make Annie’s hair stick out around her head?
The hat removed negative charges from Annie’s hair.
What will most likely happen when a negatively charged balloon is pushed toward a positively charged balloon?
The two balloons will pull toward each other.
A student charges two balloons by rubbing them against his hair. Which explains what happens when the balloons are placed close to each other?
The balloons will push away from each other because they have the same charge.
What will most likely happen when two electrically charged objects are near each other?
Two objects with different charges will attract each other or two objects with the same charge will repel each other.
A student lays four balloons beside each other on a table. Each balloon has either a positive charge or a negative charge. What could the charges be in order from left to right that will keep the 4 balloons together?
Negative, positive, negative, positive or
positive, negative, positive, negative
How will a balloon charged with static electricity affect small pieces of paper?
By attracting them
What can be the result when static electric charges build up in storm clouds?
Lightning will strike.
A metal sphere is negatively charged. Which object will most likely be repelled by the metal sphere?
Another negatively charged object.
In which way are magnets like electrically charged particles?
They attract and repel.
What could cause two electrically charged objects to repel each other?
They have the same electrical charge.
Copper wire was wrapped around an iron nail and both ends of the wire were attached to a battery. What happened when this was set up?
An electromagnet was created that was in a closed circuit and it could pick up something magnetic. An electromagnetic field was created.