The watering can as a trumpet © Siemens Stiftung 2018 CC BY-SA 4.0 international

The watering can as a trumpet

Image

Photo:
Child blows into a watering can, thus producing relatively loud trumpet-like sounds.

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2018-07-27
By pressing the current of air between its lips, the child produces the original vibration. In addition, the entire air volume in the watering can is stimulated to start vibrating. The sound gets louder. At certain pitches, the watering can volume vibrates more or less. As in our case it is the lower pitched tones that tend to vibrate, the watering can trumpet produces a relatively muffled sound.

Information and ideas:
Easy experiment to do in class. Then comparisons can be made to various different musical instruments which work on this very principle.

Relevant for teaching:
Sound/acoustics: parameters
Vibrations and waves
Acoustic phenomena
Example
Personal, social and health education (PSHE); Physics
Grade 1 to 4; Grade 5 to 6; Grade 7 to 9; Grade 10 to 13
Elementary school; Middle/high school; Vocational training
Sound
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