| A | B |
| sound | Form of energy produced by VIBRATIONS thru matter |
| wave length | The distance between 2 compressions |
| wave | A place where molecules in matter are disturbed [vibrate] |
| vibrate | To move back and forth |
| crest | The highest point of a wave |
| trough | The lowest point of a wave |
| pitch | The highness or lowness of a sound |
| low pitch [low sound] | The type of sound produced by fewer vibrations per second |
| high pitch [high sound] | The type of sound produced by more vibrations per second |
| compression wave | The area of wave with increased pressure [like a bunched up slinky] |
| rarefaction wave | area of a wave with decreased pressure [ stretched out slinky] |
| frequency | Number of vibrations per second |
| resonance | The strengthening of sound waves |