WONDER #1753: Why Does a Black Light Make Things Glow?

Question 1 of 3

Black lights emit most of their light waves in the form of what type of light?

1. x-rays
2. visible
3. ultraviolet
4. radar

Question 2 of 3

Although humans can’t see ultraviolet light, we can see its reflection off of objects containing what?

1. phosphors
2. silk
3. cotton
4. radioactivity

Question 3 of 3

Which of the following has NOT been linked to excessive exposure to ultraviolet radiation?

1. skin cancer
2. eye damage
3. skin aging
4. tendonitis

Check your answers online at https://www.wonderopolis.org/wonder/why-does-a-black-light-make-things-glow.