Let them pull the thread tightly and pluck it with their free hand; - What do they feel and hear? - Do they feel ... In musical instruments the vibrating body might be strings, the skin of a drum or the column of air inside an organ pipe. ... When a body vibrates, it produces a certain number of vibrations or sound waves; a sound.
|Title||:||Science Matters STD 2|
|Author||:||A. Ojwang & F. K’Opiyo|
|Publisher||:||East African Publishers -|