Homemade Light Bulbs Quiz

What is necessary for electrons to flow in an electrical circuit?

• A single battery

• A broken wire

• An open loop

• A closed loop

Which of the following is NOT required for the homemade light bulb experiment?

• Alligator clips

• D batteries

• A light bulb

• A mason jar

What should you do if the graphite pencil refill breaks during the experiment?

• Use a different type of pencil

• Stop the experiment

• Continue with the broken refill

• Replace it with a new one

What happens to carbon molecules in graphite when electricity passes through them?

• They lose energy and cool down

• They gain energy and heat up

• They remain unchanged

• They turn into liquid

What is the result when the carbon molecules in graphite reach an excited state?

• They lose their charge

• They become solid

• They emit light and heat

• They emit sound