WONDER #1273: What Makes a Light Bulb Light Up?

Question 1 of 3

Light bulb filaments are usually made of which metal?

1. aluminum
2. iron
3. argon
4. tungsten

Question 2 of 3

Who invented the light bulb?

1. Sir Thomas Swan
2. Thomas Edison
3. both (A) and (B)
4. neither (A) nor (B)

Question 3 of 3

Which of the following is NOT a component of a light bulb?

1. tungsten filament
2. metal contact
3. argon gas
4. generator

Check your answers online at https://wonderopolis.org/wonder/what-makes-a-light-bulb-light-up.