| Answer | Crossword Clue |
|---|---|
| ECHO | Sound wave reflection. |
| ECHO | Radio-wave reflection |
| ECHO | Reflection of a radio wave in radar. |
| ECHOISM | Sound reflection |
| ECHO | Sound reflection |
| SWASH | Wave sound |
| ROTE | Wave sound |
| LAP | Wave sound |
| AFS | Sound-wave frequencies: Abbr. |
| PHEW | Sound in a heat wave |
| DECIBELS | Units of sound-wave intensity |
| WHEW | Sound heard during a heat wave |
| POOF | Sound after a wave of a wand |
