2007-09-30 15:01:08 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
if there is air on that planet then yes.
2007-09-30 15:05:05 · answer #1 · answered by Anonymous · 3⤊ 0⤋
If you define "sound" as the impact of pressure waves on an ear drum which is then interpreted by a brain, then you'd need an ear drum and a brain on the planet to talk about sound.
If you simply mean a train of compression waves carried by a medium, and of such frequency that we humans would interpret as sound if we were there, then yes.
In fact, using the second definition, there are sound waves inside the sun that propagate all around, bouncing off the surface (from the inside) and going back in. These waves can be detected with the proper equipment.
When comet Shoemaker-Levy-9 crashed into Jupiter, each of the bigger pieces made a "splash" in the upper atmosphere, left a black hole that was seen for weeks (months in some cases) and, in some cases, created a "wave" that moved away at the speed of sound. It was seen on some pictures.
Had you been in that layer of the atmosphere (some distance away), you would have heard a sound as this "wave" would have passed your position.
But you were not there (and nobody else was), so this pressure wave did not hit any eardrums.
Back to the forest question. Is there a sound if no one is there to hear it? Depends on the definition.
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If a big enough boulder rolls on the Moon, it will create sound waves in the Moon's crust. An astronaut standing on the Moon, may hear the sound as the compression wave passes his boots and gets transformed into a compression wave in the air inside his suit.
2007-09-30 22:25:57 · answer #2 · answered by Raymond 7 · 1⤊ 0⤋
If the planet has an atmosphere, then the fall would create waves of compression and rareification in the atmosphere. These are commonly called 'sound waves', but some people will always insist that, if no one hears it, it isn't really sound. A lot of that is definition(s) and semantics âº
Doug
2007-09-30 22:23:39 · answer #3 · answered by doug_donaghue 7 · 2⤊ 0⤋
It depends on if the planet has an atmosphere because a sound wave is created by the compression and rarefraction of air particles. If it has an atmosphere then yes, if not then no.
2007-09-30 22:24:13 · answer #4 · answered by JTK 1 · 1⤊ 0⤋
Yes, but only if there is enough air to propagate the sound.
On a world without some kind of atmosphere there would be no sound.
2007-09-30 22:56:31 · answer #5 · answered by Anonymous · 1⤊ 0⤋
Assuming an atmosphere, there would be sound. There just might not be anyone there to witness it rolling.
2007-09-30 22:08:47 · answer #6 · answered by Iris the Librarian 4 · 2⤊ 0⤋
Actually it does. Earth is simply too far away for us to hear it.
2007-09-30 23:03:45 · answer #7 · answered by Woodman 5 · 1⤊ 0⤋
yes it makes a sound, but if people can't hear it they presume that it is silent.
2007-10-01 21:24:30 · answer #8 · answered by cassandra8507 2 · 0⤊ 0⤋
yes, and if you listen closely you can hear it, white noise
2007-09-30 22:22:06 · answer #9 · answered by Eric M 2 · 1⤊ 0⤋