Sound propagation: glass pairs © Siemens Stiftung 2018 CC BY-SA 4.0 international

Sound propagation: glass pairs

Image

Graphic:
Why does a second glass connected to the first glass with a wire vibrate when we hit the first glass?

English, Spanish (CREA), German
Image (43.1 kByte)
2018-04-22
This experiment makes it clear that sound is conducted via solid bodies. The glass starts to vibrate when it is rubbed, the wire conveys the vibrations to the second glass.
It must be remembered that the vibrations of the second glass only occur if the glasses have the same pitch level when they are struck or rubbed (use water to adjust levels if necessary)!
Close observation will show that even the water in the second glass starts to vibrate.

Information and ideas:
Setting up the experiment: Two glasses are put at a small distance from each other. A knitting needle or something similar is laid over the two glasses.
Using a moist finger, rub the first glass gently along its rim. A sound is produced, and after a short time the needle begins to vibrate on the second glass as well.

Relevant for teaching:
Acoustic phenomena
Sound/acoustics: parameters
Vibrations and waves
There are no other media directly related to this file.
Illustration
Personal, social and health education (PSHE)
Grade 1 to 4; Grade 5 to 6; Grade 7 to 9; Grade 10 to 13
Elementary school; Middle/high school; Vocational training
Sound; Sound (basic phenomenon); Sound propagation
Siemens Stiftung Media Portal
MediaHouse GmbH
© Siemens Stiftung 2018
Stay up-to-date!

About four times a year, we inform you about new media on this portal as well as current studies and events related to OER and STEM.

Media Portal newsletter – register now

About four times a year, we inform you about new media on this portal as well as current studies and events related to OER and STEM.

*Required fields


Language

Liebe Nutzerin, lieber Nutzer,
El Portal de Medios – das spanische Medienportal – ist umgezogen und heißt nun CREA.
Auf CREA finden Sie weiterhin hochwertige Medien für den MINT-Unterricht und vieles mehr.

Dear User,
El Portal de Medios - the Spanish Media Portal - has moved and is now called CREA.
On CREA, you will continue to find high-quality media for STEM education and much more.

Estimado usuario, estimada usuaria,
El Portal de Medios – en español – ha sido trasladado y ahora se llama CREA.
En CREA seguirá encontrando medios de alta calidad para la enseñanza de STEM, y mucho más.

Zu CREA wechseln / Switch to CREA / Cambiar a CREA
CREA - El Portal de Medios para la Enseñanza STEM

Hierbleiben / Stay here / Quédate aquí:
Fenster schließen / Close window / Cerrar ventana