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How do sound produced by hitting the bottle with a pencil differ from those produced by blowing across the top?
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Why does the pitch change when a bottle is hit on the outside as opposed to blowing over the top of it?
This must be because hitting the bottle makes it ring at it's natural frequency, which is determined by the glass envelope itself, whereas blowing across the top sets up a standing wave in the air inside the bottle. Thus they are two quite separate and different phenomena.
Why is sound produced when you blow across a bottle?
Bottle is just like a closed organ pipe. So stationary waves will be formed and hence sound is produced with a particular frequency
Why do bottles whistle when you blow in them?
Because sound is caused by the vibration of air. When air is caused to vibrate by blowing across the bottle top sound is formed.
How do you do the coin in a bottle from across the room magic trick?
Magic
Why does a window left slightly open whistle on a windy day?
While there are a few ways to think about what sound is, for our purposes we will think of it as the rapid back and forth movement of a group of air molecules. What is happening in the case of the window is that the flow of air hitting an edge on the window is unstable. As you can imagine the fluid mechanics involved is quite complicated and quite frankly beyond me. However, the principle is the same as when you generate a sound by blowing on the top edge of an empty bottle. In that case what is happening is that part of the stream of air is quickly flipping back and forth between going over the lip of the bottle and going into the bottle. When it starts going over the lip of the bottle, forces are created the causes it to start going into the bottle. However when it starts going into the bottle, there are forces that are created that cause it to start going over the lip of the bottle. This happens over and over again very quickly. The forces that pull the air stream back and forth are called "negative feedback" forces. All wind instruments use the combination of air flow and negative feedback to generate their sounds. How quickly the flow moves back and forth depends on the dimensions of the cavity, the size of the column of air hitting the edge and the speed of the air flow.
Why does the pitch change when a bottle is hit on the outside as opposed to blowing over the top of it?
This must be because hitting the bottle makes it ring at it's natural frequency, which is determined by the glass envelope itself, whereas blowing across the top sets up a standing wave in the air inside the bottle. Thus they are two quite separate and different phenomena.
Why does a conch shell make that weird noise when you blow in it?
The sound produced when blowing into a conch shell is due to resonance. The shape of the shell acts as a natural amplifier, enhancing the sound of the vibrations created by your breath. This phenomenon is similar to blowing across the top of a bottle to produce a similar sound.
Which woodwind instrument is by blowing in the opening just like you blow across the top of a soda pop bottle?
Flute
Which woodwind instrument is played by blowing in the opening just like you blow across the top of a soda bottle?
Flute
Which woodwind instruments is played by blowing in the opening just like you blow across the top of a soda pop bottle?
Flute
Which woodwind instrument is played by blowing the opening just like you blow across the top of a soda pop bottle?
Flute.
Why is sound produced when you blow across a bottle?
Bottle is just like a closed organ pipe. So stationary waves will be formed and hence sound is produced with a particular frequency
Which woodwind instrument is played by blowing in the opening just like you blow across the top of a soda pop bottle?
flute
How do pipes work?
The noise is simply made by air vibrating down tubes of different lengths and diameters. Blowing across the tops of the tubes sets up a vibration. The frequency (pitch/note) is determined by the physical dimensions of the tubes. If you blow across the top of an empty bottle you will hear a note. Try blowing across the top of a different sized bottle, or a bottle partly filled with water and you will get a different note. Pan pipes are constructed to take advantage of this phenomenon.
Why do bottles whistle when you blow in them?
Because sound is caused by the vibration of air. When air is caused to vibrate by blowing across the bottle top sound is formed.
What can a two-liter bottle be used for?
A two liter bottle can be used for many things. Such as, making a cyclone, drinking out of, hitting a friend (or enemy), cutting in half, blowing into to make a sound, etc. My best advice is to try things out. In other words, experiment.
How does the volume of the water in the glass bottles affect the pitch?
The pitch is governed by the length of the column of air in the bottle, so you can change that by adding or removing a liquid like water. Are you blowing across the top or striking the bottle?
