Sonobuoy and internal combustion engine: what they have in common

1. Step 1. Sonobuoy — has part — Hydrophone. A hydrophone.
2. Step 2. Hydrophone — is part of — Echo sounder. A hydrophone listens for the echo.
3. Step 3. Echo sounder — uses — Sound wave. A sound pulse.
4. Step 4. Sound wave — is used in — Silencer. It damps sound waves.
5. Step 5. Silencer — is part of — Internal combustion engine. A silencer.

Open Evothings