Online animation helps the pupil to gain an understanding that sound is made up of vibrations that travel through a medium to reach our ears. *4*Science lesson also provides limited sample questions at the end of the topic.*4**4**1*SOUND*2*Explains that sound reaches our ears via vibrations that objects give off.*4*Explains a vibrating body is called the source.*4*Explains a medium is the substance through which sound vibrates.*4*Explains when sound reaches the ear, the eardrum vibrates and sends messages to the brain.*4*Explains that sound can travel through solids, liquids and gases.*4**4**4*Useful for teachers of science/physics.