WONDER #1429: Why Do Your Pupils Get Bigger in the Dark?

Question 1 of 3

The circular membrane that gives your eyes their color is called the what?

1. iris
2. pupil
3. retina
4. cornea

Question 2 of 3

When the pupil dilates, it does what?

1. gets smaller
2. gets bigger
3. stays the same size
4. turns inside out

Question 3 of 3

At what time of day would your pupil likely be the largest?

1. mid-morning
2. noon
3. mid-afternoon
4. midnight

Check your answers online at https://wonderopolis.org/wonder/why-do-your-pupils-get-bigger-in-the-dark.