Musical Bottles

Introduction

Have you ever blown across a bottle's top and made a pleasant, resonant sound? If so, have you wondered how that note is made exactly? A bottle is actually what is called a closed-end air column. Clarinets and some organ pipes are examples of musical instruments of this type. In this science activity, you will use bottles to investigate how the length of a closed-end air column affects the pitch of the note that it makes.

Credits

Materials

• Narrow-neck bottles (3). They can be glass or plastic.
• Permanent marker
• Ruler
• Water
  
  

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