Sound

  • WM7.1 Chime

    This is a small xylophone. Different pitches and sounds can be heard and qualitatively analyzed.

  • WM7.2 Tuning Forks

    Tuning forks are instruments made in such a way that they vibrate to produce only one pitch. There is a variety of forks. Two forks of the same frequency are mounted onto boxes, one end open, the other closed. Qualitative analysis with these can be expounded. The other benefit of the mounted forks is that when placed next to each other and one is struck, the other will pick up the vibration. If the class is very quiet, strike one, let it vibrate, and then stop it by placing a hand on it. The class can faintly hear the other one.

  • WM7.3 Xylophone

    This is a bit different from chimes. Whereas the small xylophone is just metal bars of different length, the big xylophone also has long metal pipes hanging down to enhance the sound. If class is really bored, have a musically inclined volunteer play a tune and then qualitatively analyze it.