. Anything that makes a sound is called a sound source
. Sound waves can travel in all directions
. High energy sounds can travel further than low energy sounds
. Sound is a type of energy that can be heard
. Volume is a measure of the loudness or energy of a sound
. Sound is measured in decibels
. Infra sound is to low pitch for us to hear.
. Sound is produced when something vibrates
. There is no sound in the vacuum of space
. Sound waves can travel through solids, liquids and gasses.
By Josh . Bell P7
