Incandescent Light Bulb Quiz

What does an incandescent light bulb use to produce light?

• Chemical reactions

• Solar energy

• Electricity

• Combustion

Who is credited with inventing the more efficient incandescent lightbulb in the 1880s?

• Humphry Davy

• Thomas Alva Edison

• Benjamin Franklin

• Nikola Tesla

What is the main material used in the filaments of incandescent light bulbs?

• Copper

• Tungsten

• Aluminum

• Iron

What is the function of the filament in an incandescent light bulb?

• To reflect light

• To generate heat

• To conduct electricity and produce light

• To insulate the bulb

Before the invention of the electric arc light and incandescent lightbulb, what were two common sources of light?

• Gas lamps and fireflies

• Candles and oil lamps

• Sunlight and moonlight

• Bioluminescent plants and animals

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What component in a landline telephone converts sound waves from your voice into electrical energy?

• Receiver

• Transmitter

• Dry cell battery

• Telephone line

In a landline telephone, what is the name of the thin metal disk that sound waves are carried to?

• Magnet

• Carbon grains

• Diaphragm

• Receiver

What happens to the electrical energy in a landline telephone after it travels over wires to another phone?

Where can the sound waves, which were originally converted into electrical energy, be heard after being reconverted at the other end of a landline telephone?

• Inside the transmitter

• At the dry cell battery

• On the telephone line

• By someone on the other end of the phone