Electricity and circuits

A path that electricity can flow through is called

• An electric current

• An electric circuit

• A wire

• A load

Materials that allow electricity to move easily through them are called what?

• Insulators 
• Conductors 
• Magnetic
• Electronic

In a typical kitchen, which tool demonstrates how electrical energy can be transformed into heat?

• The dishwasher
• The stove
• The telephone
• The light

Tags

NGSS.MS-PS3-3

Most families keep a telephone in their kitchen. This is a tool that transforms electrical energy into ____________.

• Motion
• Heat
• Light
• Sound

Many electrical wires are wrapped with a plastic coating because plastic is -

• More dense than copper

• Able to keep its shape

• Less expensive than steel

• A good insulator

The student arrived home and turned on a light switch, so she could see how to get to her bedroom. The switch allowed electricity to flow and was transformed into-

• Light energy

• mechanical energy

• superior energy

• radiant energy

A/an _________________ is an object that will allow electricity to flow through it.

• insulator
• conductor

A/an _________________ is a material that will not allow electricity to flow through it.

• insulator
• conductor

Which material is a conductor?

• glass
• aluminum
• wood

Which material is an insulator?

• gold
• copper
• plastic