Question

Sound travels fastest in which of the following substances

• A. Solids
• B. Liquids
• C. Gases
• D. None of the above

Answer 1

The correct option is A

Solids

Speed of sound

1. Sound is the vibration of particles in a transmission medium such as gas, solid, or liquid.
2. Sound waves are longitudinal waves meaning that the particles are displaced parallel to the direction of the wave.
3. Since sound is a vibration, the closer the particles of the medium, the faster the vibration is transferred, thus faster the speed of sound.
4. Simply put, sounds travel the fastest in the denser medium.
5. Since solid is denser than liquid, gas, and itself, sound travels the fastest in solids.

Hence, option A is correct.