October 12-16, 2015
Light and Dark
What a brilliant group of "pupils" we have at Joyful Noise! This week in Nutrition Expedition, we learned all about how the pupils in our eyes dilate !
We first discussed how our pupils change size, depending on how light or dark it is. When it gets dark, our pupils get larger in order to allow more light to enter our eye. The opposite happens when it is light or we look into a bright light; our pupils get smaller in order to allow less light into our eye. This is actually caused by the iris (the colored area of our eye) opening and closing. I showed them a video of this very thing occurring in an eye. Now it was their turn to experiment! I gave each child a mirror and a flashlight, and they observed their own pupils dilating! So much fun :)
Super Sleuth Questions
1. What is the black circle in the center of your eye called? (answer: your pupil)
2. What happens to your pupil when it is dark? (answer: it gets bigger)
3. What happens to your pupil when it is light or bright? (answer: it gets smaller)
