# Set of Three Sound Hoses

• Twirl this hose to make 5 different tones
• Learn about the science of sound and Bernoulli’s Principle
• Whirl the 30-inch plastic “hose” over your head to hear different tones based on how fast you can twirl!

SKU: WSPH-750

### Product Description

Twirl this 30-inch plastic “hose” over your head at different speeds and make at least five different tones, depending on how fast you can twirl! This is a fun science activity that’s also guaranteed to get your arm in shape! Recommended for children ages 6 and up.

### What’s Included?

• 3 Sound Hoses in assorted colors and designs

### How Does It Work?

Twirl the tube above your head and the air molecules drifting inside are in for a ride! They begin to bump against each other and vibrate, creating sound waves that you can hear. The faster you move the Sound Hose, the higher the pitch. Experiment with different speeds to pick up the whistle.

### What Does It Teach?

Learn about Bernoulli’s Principle, and how fast moving air molecules create lower pressure. In this experiment, the free end of the hose is moving faster than your hand, so the higher pressure (where you hold the hose) sucks up the air from the free end (lower whistle) and makes the whistle.

### Experiment:

Stand outside your classroom door and start twirling as fast as you can. Don’t stop! Everyone inside will be amazed at your capacity to whistle!

## What others are saying

1. ### Question

Alan Diamant

What are the diameters of each of the three hoses?

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• Staff Lisa – Customer Service Manager

The Sound Hoses are 30.25″ long and the diameter is 1.25″.

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2. ### Question

June Guralnick (verified owner)

Are the 3 hoses that come in the package different in any way (other than color)?

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• Customer Service

They’re all the same, the color is the only difference.

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