Give us a few minutes and we'll try to use that bit of information to figure out why you haven't gotton a message back from your parents. Useing wave pool, make waves and observe. Place the corks near either end of pool. Make a wave near one end of pool. Let's make a wave and see how it moves.
Lets make one.
So maybe only some of Rappa's light is going to make it, other parts are going every which way. Pour a known amount of water through a series of paper towels, held by the students. Pour the water back into the cup. Notice the water level difference . Use the water as an analogy to light getting absorbed.