MAKE A RAINBOW
Fill the glass all the way to the top with water.
Put the glass of water on a table so that it is half on the table and half off of the table. Be careful that the glass doesn't fall.
Then, make sure that the sun can shine through the glass of water.
After you do that, place the white sheet of paper on the floor.
Adjust the piece of white paper and the glass of water until a rainbow forms on the paper.
Why does this happen? Light is made up of a lot of colors. Specifically, the colors are red, orange, yellow, green, blue, indigo and violet. When light passes through the water, it is broken up into the colors seen in a rainbow.