Sound - Vibrations, Frequency, and Pitch

​Sound is created through vibrations.

If something vibrates, sound is created. ​

Sound​

Frequency is the amount of times an object vibrates in a given amount of time.​

​

​

Sound​

​What is pitch?

Pitch is the highness or lowness of a sound. The higher the frequency of the sound, the higher the pitch. The lower the frequency of the sound, the lower the pitch.

​

Higher Frequency = High Pitch

Lower Frequency = Low Pitch​

Science​

Sound​

1. ​Choose some different size rubber bands.

   2. ​Wrap the rubber bands around objects. Create sound by vibrating the rubber bands.

   3. Using your rubber bands, create sounds that are low pitch. What did you do to get low pitch sounds?

   4. Using your rubber bands, create sounds that are high pitch.​ What did you do to get high pitch sounds?

​Thick rubber bands usually create lower pitch sound because the frequency is lower.

​​Thick Rubber Bands

​Thin rubber bands usually create higher pitch sound because the frequency is higher.

​​Thin Rubber Bands

​

​Looser rubber bands usually create lower pitch sound because the frequency is lower.

​​Looser Rubber Bands

​

​Tighter rubber bands usually create higher pitch sound because the frequency is higher.

​​Tighter Rubber Bands

​

​Thicker, Looser = Low Pitch

Thinner, Tighter = High Pitch​