Vibrations

This half term we are learning about sound.

In this lesson the children took part in three experiments to help them understand how sound is produced.

In the first experiment, children placed rice on top of a drum and banged the drum.

They observed the vibrations causing the rice to move.

They experimented by changing the force of the drumstick on the drum, to see if this changed the vibrations.

   

In the second experiment, children plucked guitar strings and watched them vibrate.

They experimented with making the noise quieter and louder, watching the strings vibrate each time.

In the third experiment, children tried to make a musical instrument out of a straw.

They experimented with how the vibrations travelled down the straw by cutting it to different lengths.