![Diagram showing standing waves in a trumpet and flute.](http://static.sciencelearn.org.nz/images/images/000/004/101/full/PHYSICS_SOUND_ART_03_Sound_resonance_instruments-CORRECTED_v2.jpg?1674173134)
A trumpet makes different notes by changing the length of the instrument using valves. The flute opens holes to make shorter standing waves.`
A trumpet makes different notes by changing the length of the instrument using valves. The flute opens holes to make shorter standing waves.`