A vibrating tuning fork is struck and then placed in water. The vibrations disturb the water, producing visible ripples and sometimes splashes. This shows how sound is caused by vibrations and how energy can transfer between different media.

1. Strike a tuning fork gently against a rubber pad or soft surface to set it vibrating.
2. Lower the vibrating tuning fork into a container of water.
3. Observe the water splashing and rippling due to the fork’s vibrations.
4. Explain that the tuning fork transfers its vibrational energy to the water.

Tuning fork in water demonstration - SiouxScience:

• Use different tuning forks (different frequencies) to compare vibration strength and water effects.
• Place the vibrating tuning fork against other surfaces (wood, glass, metal) to hear how sound changes.
• Submerge only one prong in the water to show localized disturbance.

• Strike the tuning fork against a rubber stopper or soft surface, not a hard object, to avoid damage.
• Ensure the container of water is stable to prevent spills.

• What causes the sound of the tuning fork?
• Why do ripples appear in the water when the tuning fork touches it?
• How is this similar to how sound travels through air?
• What happens if you use tuning forks of different sizes or pitches?