5.6b

 A light bulb changes electrical energy into

• light energy only

• heat and chemical energy

• light and heat energy

• light and chemical energy

What is a switch's function in a circuit?

• to make the current hotter or colder

• turn on and off the flow of current

• the pathway that current flows

• to add more power to the circuit

Electric current ____________, or travels smoothly in a closed circuit.

• sends

• insulates

• conducts

• flows

A _____________ lets the electrical current pass through and creates a closed circuit.

• thermal insulator

• thermal conductor

• electrical insulator

• electrical conductor

In a circuit, the flow of electrical charge, is the ______________.

• Current

• Voltage

• Potential difference

• Speed

Which of the following can work as an energy source?

• Battery
  

• Light bulb

• Wire
  

• All of them

What is a current?

• A constant flow of electricity 

• A path that a current can flow along

Tags

NGSS.MS-PS2-3

What is it called when a circuit is complete?

• Closed circuit

• Light bulb circuit

• Open circuit

• Series circuit

Which of these changes to the electric circuit shown above will cause the lightbulb to light up.

• Straightening the wire so that the current can flow more easily

• Adding a switch and more wire so that the current can flow more easily

• Turning one battery so that its positive end connects to the other battery's negative end

• Making the length of wire the same on both sides of the lightbulb

A string of lights with small bulbs is shown below. The bulbs are connected by wire that is covered in an insulator. When the lights are on, electricity travels in....

• a complete circuit

• a sound wave

• a light ray

• an incomplete path

Tags

NGSS.MS-ETS1-1