Chapter 20 Electricity

What is static electricity?

• The build-up of charge on insulating materials

• The build-up of charge on conducting materials

• The flow of charge on insulating materials

• The flow of charge on conducting materials

Why do most materials have a neutral overall charge?

• Because they contain only negative electrons

• Because they contain positive protons and negative electrons

• Because they contain only positive protons

• Because they contain only neutral particles

What happens when materials are rubbed together?

• The neutrons are transferred from one material to the other

• The electrons are transferred from one material to the other

• The protons are transferred from one material to the other

• The charge remains the same on both materials

Tags

NGSS.MS-PS1-2

In which type of materials do the electrons flow back after being rubbed off?

• Neutral materials

• Conducting materials

• Insulating materials

• Metallic materials

What causes a spark in static electricity?

• The neutral charge of the materials

• The potential difference between the charged material and the earth

• The transfer of electrons between materials

• The transfer of protons between materials

Why do cars sometimes build up charge?

• Because their metal frame is in contact with the wind

• Because their metal frame is in contact with the sun

• Because their metal frame is in contact with water

• Because their metal frame is in contact with the ground

Tags

NGSS.MS-PS2-3