This simple experiment will teach kids about convex/concave objects and how they reflect light. They will also learn the difference between concave and convex.
What is the difference between concave and convex objects?
What are some applications of concave and convex parts?
There are many concave and convex objects around us. In fact, we eat with one everyday. That’s right, a spoon is a great example. In fact, all concave objects can be convex and all convex objects can also be concave because everything has at least two sides; it doesn’t matter if it is visible or not.
A dark room
In a dark room, hold a spoon with the bulged-curved side directly facing a flashlight about three inches away. Turn the flashlight on. What do you see?
Now flip the spoon over to the curved-inwards side and shine a flashlight at it as you did in step 1. Now what do you see?