Question

How sound travels in space?

Answer 1

Sound

1. When a body undergoes vibration, it transfers this vibration energy to the air particles around it.
2. These air particles suffer compression and rarefaction.
3. By repeated compression and rarefaction they transfer their energy into the neighboring particles.
4. In this way, the sound energy travels a distance through the medium and sound can be heard.

Propagation of Sound in Space

1. The speed of sound in air is $340m/s$, their speed in water is $1480m/s$ and in solid is around $6000m/s$.
2. We know that in space there is vacuum.
3. Hence, no particles in a medium are present to transfer this sound energy at a distance.
4. Therefore, propagation of sound in space is not possible.