The high-pitched sound you hear is created by the paper vibrating.

At home 5-11 11-14

The box amplifies the vibrations from the string as the cloth is pulled along it, making a sound that our ears can hear.

At home 5-11 11-14

You can’t hear the bell as you have created a partial vacuum inside the bottle. Without the air in the bottle, the sound is...

At home 5-11 11-14

As the been swinger moves through the air, the rubber band starts to vibrate. The card amplifies the sound so that you can...

At home 5-11 11-14

The easier it is for the glass to vibrate when you tap it, the higher the frequency. So the bottle with less water in will...

At home 5-11 11-14

Tapping the rim causes vibrations around the cup, but at the handle the movement is always at a minimum. So tapping at the...

At home 5-11 11-14

Blowing through the Loud Lollies makes the elastic band vibrate and create a sound. Moving the straws closer together shortens...

At home 5-11 11-14

Pulling the cloth along the string makes it vibrate and produce a faint sound. But the cup and air around it also vibrate so...

At home 5-11 11-14

It sounds louder because vibrations travel through the metal and string more easily than through air.

At home 5-11 11-14

Yna, ysgydwch y botel eto. Ni allwch glywed y gloch am eich bod wedi creu gwactod rhannol yn y botel. Heb aer yn y botel, ni...

Adnoddau Cymraeg 5-11 11-14