Charging by Rubbing

What happens when two non-metallic objects are rubbed together according to the concept of "Charging by Rubbing"?

• They repel each other

• They conduct electricity

• They are attracted to each other

• No change occurs

What ancient observation led to the naming of electric forces?

• The observation of stars moving in the sky

• The observation of amber attracting thread when rubbed

• The observation of water flowing in rivers

• The observation of fire burning wood

What does the Greek word "elektron" refer to?

• Water

• Fire

• Amber

• Air

What common modern-day example illustrates the concept of electric charge due to rubbing materials together?

• Turning on a light switch

• Taking clothes out of a dryer

• Boiling water

• Freezing ice cubes

What happens when dissimilar materials are rubbed together according to the text on electric charge?

• They do not interact.

• They attract each other.

• They repel each other.

• They become neutral.

What was eventually named "charge" as described in the text?

• The material itself.

• The force of attraction and repulsion.

• Something that was being exchanged between the materials.

• The process of rubbing materials together.

According to the text, what happens if similar materials are rubbed together?

• They attract each other.

• They repel each other.

• They exchange charges.

• Nothing happens.

What does the text suggest about the nature of "charge"?

• It is a single type.

• It is always neutral.

• It comes in two types.

• It can be destroyed.

What did American Ben Franklin notice about a rubber rod when rubbed by animal fur in the 18th century?

• It acquired a positive charge

• It acquired a negative charge

• It remained neutral

• It conducted electricity

What happens when a glass rod is rubbed by silk?

• The glass rod acquires a negative charge

• The glass rod acquires a positive charge

• The glass rod loses its electrical properties

• The glass rod becomes a conductor