The Light Bulb - Eureka Inventions

What is a common type of light bulb today?

• Incandescent bulbs

• CFL (Compact Fluorescent Lamp) bulbs

• LED (Light Emitting Diode) bulbs

• Halogen bulbs

What is a filament?

• The tiny wire that runs through the center of a light bulb.

• A type of electrical connector used in circuits.

• A component that stores electrical energy.

• A type of light-emitting diode.

Who invented the light bulb?

• Alexander Graham Bell

• Nikola Tesla

• Thomas Edison

• Albert Einstein

What became safer after the light bulb was invented?

• Going outside at night.

• Driving a car during the day.

• Cooking food indoors.

• Reading books in the dark.

What did people use before electric light bulbs?

• Oil lamps and candles.

• Gas lamps and torches.

• Solar-powered lanterns.

• Incandescent bulbs.

What material was commonly used for early light bulb filaments?

• Copper wire

• Carbonized bamboo or whale blubber

• Glass fibers

• Aluminum strips

How did the invention of the light bulb impact society?

• It allowed people to work and read at night safely.

• It made it easier to cook food quickly.

• It reduced the need for public transportation.

• It increased the use of candles and oil lamps.

What is the main advantage of electric light over oil lamps?

• Electric light is more affordable.

• Electric light is brighter and safer.

• Electric light requires less maintenance.

• Electric light is more portable.

Was electric light before Thomas Edison reliable?

• Yes, it was very reliable and bright.

• No, it was very unreliable, dim, and expensive.

• Yes, it was somewhat reliable but not widely used.

• No, it was only used in large cities and was very costly.

What is the main component of a light bulb that produces light?

• The filament.

• The glass bulb.

• The base.

• The tungsten wire.