| A | B |
| sound source | anything that vibrates to make sound |
| vibration | a shaking, back and forth movement |
| property | how something looks, feels, tastes and sounds |
| sound receiver | anything that hears or responds to sound |
| sound | something you hear, movement or wave |
| sound discrimination | ability to identify objects and their sounds |
| code | set of symbols representing letters used to communicate |
| volume | how loud or soft a sound is |
| pitch | how high or low a sound is |
| longitudinal wave | a sound wave |