| A | B |
|---|
| sound | something that can be heard |
| vibration | a quick movement back and forth |
| water | a kind of liquid |
| outer ear | the part of your ear you can see |
| noise | an unpleasant sound |
| brain | the part of the body that hears sound |
| pitch | how high or low a sound is |
| volume | how loud or soft a sound is |
