Why does sound travel faster in water?
Show answer & explanation
Answer: Water molecules are closer together
Water molecules are closer together ✓ — Correct! Sound travels by molecules bumping into each other. Water molecules are much closer together than air molecules - water is about 800 times denser. When molecules are closer, they transfer vibrations faster. Sound travels at 343 m/s in air but 1,480 m/s in water - over 4 times faster!
Water amplifies sound waves — Wrong. Water doesn't amplify sound waves. Sound travels faster in water because molecules are closer together, allowing vibrations to transfer more quickly from one molecule to the next.
Pressure pushes sound faster — Wrong. While pressure exists in water, that's not why sound travels faster. The key is molecular spacing - water molecules are closer together than air molecules, allowing faster vibration transfer.
More Physics in Daily Life questions
- In a warm office that already reads 26 C, which change can make people feel cooler without lowering the thermostat?
- Why might 26 C feel acceptable in a breezy naturally ventilated summer building but too warm in a sealed winter office?
- On a warm humid day, why can the same 27 C room feel much worse once you start sweating?
- Why can moving air make a 27 C room feel cooler without changing the thermometer?
- Which hidden factor can make a desk beside a cold window feel chilly even when the thermostat across the room still reads 22 C?
- In the same 22 C room, why might someone who just climbed stairs feel warm while someone sitting in a T-shirt feels chilly?