Fill in the Blanks game reflection Online version juego de reflexión by Carlos Cristancho 1 light straw you speed notice Another which dense example change light substance because that when apparently glass phenomenon occurs transmitting light is refraction , consists of a of of passing from one medium to another ; This can be air - water - air or air - glass - air . For , if put a straw into a with water , you that the folds . This is passes from a less dense to a one .