Sound Bottles
Eight bottles. Some water. A whole band is waiting in there.
Tap a bottle to ring it. Drag the round handle to add or pour out water.
Songs
Pick a tune. Press Play along. Bars fall toward the gold line. Tap the bottle just as a bar lands.
Sound waves
Last note
Nothing yet
Ring a bottle. Watch the line wiggle.
Why tapping works this way
Tap the glass and it shakes. The water shakes with it. More water is more weight. A heavier thing shakes slower. Slower shaking is a lower note. So more water, lower note.
Why blowing flips it
Blow across the top and the air inside shakes. More water leaves less air. A small pocket of air shakes faster. Faster shaking is a higher note. So more water, higher note. Try both on the same bottle. Your scale will run backward.
What a wave is
Every sound is shaking air. A high note makes a tight, busy wave. A low note makes a slow, wide wave. Poppy says the wave is the sound you can see.