Circuits and Energy

What is a circuit?

• an outlet or switch
• a path which an electric current flows
• a poor conductor

What is an electric current? 

• the flow of electricity 
• electricity moving in only one direction
• a switch that gives power

What is a switch? 

• part of the toaster that you plug into the wall
• an outlet that gives power
• part of a circuit that starts or stops the electricity

Electric current moves in only one direction. 

• True
• False

A conductor is ____________

• something that allows electric current to flow easily
• something that limits the flow of electricity

Electrical energy can make heat energy. 

• True
• False

All metals conduct electricity equally well. 

• True
• False

What are filaments? 

• resistor's in the toaster's circuit
• wires that heat up when they conduct electricity
• both 

Tags

NGSS.MS-PS3-3

Which of these items radiate heat energy? 

• oven, hair dryer, toaster
• shower, toaster, vacuum
• sun, toaster, TV

The lever on a toaster is a ____________

• switch
• resistor
• conductor