sound

Hear the Ocean

Have you ever been told that you can hear the ocean when you put a seashell to your ear? If you have tried it, you probably heard something that sounded like the ocean. What did you really hear?

Feeling Sound Waves

This experiment is one that I have noticed while doing my electricity shows. I use a balloon in the show to demonstrate positive and negative static charges. While holding this balloon, I noticed that I could feel a variety of sounds, especially when I was using a microphone and loud speaker.

Cone of Sound

Today I was playing with sound experiments, and had so much fun with this one that I thought I would share it.  It is based on the original phonographs, which used a very similar setup to play recordings of music or voices.  They used a large cone to increase the volume of the sound.

Comb Kazoo

I was talking with a group of educators about demonstrations. The conversation led to an interesting discussion, and this experiment. It is one that we did back when I was a kid, and it is still fun.

Whistle Stick

This experiment is a trick that my Grandfather taught me when I was very young. He called it a "whistle stick", and making one brought back delightful memories from my childhood. This experiment requires the use of a sharp knife, so if you are young, you may need adult assistance. It is not difficult, but even adults should keep safety in mind.

A Real Tuning Fork

If you have ever played with a tuning fork, you know that they are interesting and fun, but they can also be expensive. For this experiment, we will use a regular fork from your kitchen to produce a beautiful tone.

Making a Screamer

It has been a while since I did one of the noisy, annoying sound experiments which kids love and parents hate. Just keep in mind, that it is all in the interest of science.

You will need:

- a piece of paper about one inch wide and about 5 inches long.
- scissors

Spoon Bells

Any time you hear a sound, it is because something is vibrating. Place your fingers against your throat and hum. You will feel your throat vibrate. We usually hear sounds from vibrations that travel through the air, but solids can be much better at carrying vibrations.

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