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Old 03-15-2012, 06:51 AM
HeyHomie HeyHomie is offline
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Is There Sound (audible to the human ear) on Mars?

Check out this awesome picture of a tornado on Mars.

From what I understand, the atmosphere on Mars is about 1% as dense as that of the Earth. Would such a thin atmosphere carry sound waves that are audible to the human ear? If I were standing near that tornado, would I have been able to hear it?*

*Of course not- I'd have been in a space suit. But you get what I mean.
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  #2  
Old 03-15-2012, 07:04 AM
Sizzles Sizzles is offline
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Nasa put a microphone on the Polar Lander;

http://mars.jpl.nasa.gov/msp98/lidar...mic_found.html

Don't know if it worked.
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Old 03-15-2012, 08:19 AM
Si Amigo Si Amigo is online now
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There is an atmosphere so yes there would be sound; sound is basically the displacement of molecules.
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Old 03-15-2012, 08:51 AM
carnivorousplant carnivorousplant is online now
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Quote:
Originally Posted by Sizzles View Post
Nasa put a microphone on the Polar Lander;

http://mars.jpl.nasa.gov/msp98/lidar...mic_found.html

Don't know if it worked.
The Polar Lander crashed.
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Old 03-15-2012, 09:02 AM
UncleRojelio UncleRojelio is offline
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Originally Posted by carnivorousplant View Post
The Polar Lander crashed.
My bad. Sorry.
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Old 03-15-2012, 09:07 AM
Fear Itself Fear Itself is online now
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Quote:
Originally Posted by carnivorousplant View Post
The Polar Lander crashed.
I bet that made a sound.
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Old 03-15-2012, 09:17 AM
kenobi 65 kenobi 65 is offline
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Originally Posted by Fear Itself View Post
I bet that made a sound.
If a spaceship crashes on Mars, but there's no one to hear it, does it make a sound?


Last edited by kenobi 65; 03-15-2012 at 09:17 AM..
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  #8  
Old 03-15-2012, 09:19 AM
Happy Lendervedder Happy Lendervedder is offline
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Age old question. If a Polar Lander crashes onto a planet with a very thin atmosphere and no one could actually survive standing on the surface of that planet without wearing a spacesuit that cancels out most outside noise, does it make a sound?
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Old 03-15-2012, 10:44 AM
chrisk chrisk is offline
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I found this interesting article - theoretical results rather than experimental, but I found it interesting - a sound that would carry 1 kilometer on Earth would travel approx 15 meters on Mars.
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Old 03-15-2012, 11:14 AM
Freddy the Pig Freddy the Pig is offline
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Quote:
Originally Posted by Si Amigo View Post
There is an atmosphere so yes there would be sound; sound is basically the displacement of molecules.
But with only 1% of earth-atmosphere density would human ears be able to hear that sound? Would sounds just be 1% as loud?
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Old 03-15-2012, 11:24 AM
Mangetout Mangetout is offline
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Originally Posted by Freddy the Pig View Post
But with only 1% of earth-atmosphere density would human ears be able to hear that sound? Would sounds just be 1% as loud?
I imagine the relationship between volume and density won't be linear. The speed of sound will certainly be slower in a less dense medium.
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Old 03-15-2012, 11:28 AM
chrisk chrisk is offline
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I suspect that distance might be the factor - that despite the sparse air, a sound that you're very close to is almost as loud as on Earth, but it falls off quickly as it travels.
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Old 03-15-2012, 11:36 AM
Si Amigo Si Amigo is online now
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Quote:
Originally Posted by Freddy the Pig View Post
But with only 1% of earth-atmosphere density would human ears be able to hear that sound? Would sounds just be 1% as loud?
Depends upon the individuals hearing perception. I for one have trouble hearing the grass grow over the screams of the butterflies.
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Old 03-15-2012, 08:53 PM
Saint Cad Saint Cad is online now
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There was a website that simulated what a windstorm on Mars would sound like. Sounded very meh. I'll see if I can find it.

http://www.youtube.com/watch?v=s2jNQMTnhdQ


Here's another one to compare sounds
http://sprg.ssl.berkeley.edu/marsmic/sound.html

Last edited by Saint Cad; 03-15-2012 at 08:58 PM.. Reason: found it
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