Have you ever imagined what your voice would sound like if you could stand safely on an alien planet? Although we can’t go to other planets yet, sonologists can provide us with some conjectures.
Earth
When you whisper in class, it is easy for teachers to find out, because the earth’s atmosphere is too suitable for human beings.
When we make a sound, the vocal cords will vibrate, so that the air vibrates together and propagates to a distance to form sound waves; The distance that sound waves can travel is limited. Molecules in the air will absorb part of the vibration of sound waves, making the sound smaller and smaller as it goes farther. On earth, the air is rich in nitrogen and a small amount of carbon dioxide. The density is just good. It will not absorb too much vibration, so that the sound can spread smoothly.
Venus
On Venus, volcanic eruptions everywhere release a large amount of carbon dioxide, making the density and temperature of the atmosphere much higher than the earth, like a pot of boiling soup. The air pressure here is equivalent to the water pressure 900 meters below the earth’s water. If you can speak normally in such an environment, the tone will be much lower; On the other hand, there is a strong wind everywhere on Venus, the wind speed can reach 100 meters / second, and your voice will become like the cry of a duck.
Mars
On this red planet, talking to others requires “whispering”. Students stand a little farther away. If you want to chat, you can only yell at each other.
Mars’s atmosphere is not only very thin, but also 95% of it is carbon dioxide. It can effectively absorb sound waves and vibrations. Even if you break your throat, people 10 meters away can’t hear it at all. Other components of the Martian atmosphere will also reduce the frequency of sound waves, making your voice sound low and hoarse, that is, a child’s voice may sound like an uncle.
Titan
Titan, also known as Titan, is one of the most earth like planets in the universe. However, its atmospheric density is 50% higher than that of the earth’s air. The thick and cold atmosphere will slow down the vibration of vocal cords and the speed of sound propagation, making your voice deep. Titan has more nitrogen than Earth’s air, which will make the sound go further.
Other planets
In addition to these planets, almost all other planets in the solar system are silent worlds. Because sound wave is a kind of “mechanical wave”, which needs to be transmitted by media, such as air, water, wood and so on; Those planets do not have enough atmosphere to carry sound waves, which is basically equivalent to the vacuum environment in outer space. Therefore, the explosion of space war in many science fiction movies may not appear. No one can hear your scream in space.
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