At the end of this activity, students should be able to: û explain the movement of a wave reflected at a fixed and at a free end of a string. û describe the movement of a wave along a string made of segments of different density. û state Huygens’ principle. û describe the reflection and the refraction of waves in two-dimensional areas. û explain the concepts of echo and reverberation.

Originally released by Learnetic, 2016.