2006-11-17 00:47:47 · 4 answers · asked by gate7cy 1 in Social Science ➔ Other - Social Science
It is really Gods football and he left it for us to play with now !
2006-11-17 02:19:00 · answer #1 · answered by Latin Techie 7 · 0⤊ 0⤋
This topic came up recently when scientists were debating whether Pluto should be considered a planet. Objects greater than a certain mass will always be spherical, because of gravitational forces. So one proposed defintion was, if the object was big enough to be "round", it was big enough to be a planet - otherwise, it was just a dwarf planet or sun-orbiting "object".
I think that mass threshhold is right around the size of the largest asteroid, or 8*10^20 kg - the moon has a mass about 100 times that, or 7.3477Ã10^22 kg.
2006-11-17 13:24:04 · answer #2 · answered by mizerock 3 · 1⤊ 0⤋
Well it's been spinning aROUND getting dizzy!!
Did you pick it up??
'Pick wot up??' you ask.
'The Joke!' says Aye, me Lad!
Well it turns so slowly that all the material simply tries to move towards its Centre of Gravity.
A bit of shaking ... and everything falls towards the centre but has to evenly spread around that c of G, because gravity itself, exerts a constant force throughout.
Thereofer the force on avery particle is consistent and thus the behaviour and factors surrounding ultimate settlement of the atoms and particles of a moon or slow-spinning planet are consisten and evenly spread.
Therefore, it becomes round! The result is a most consistent spherical shape.
2006-11-17 08:58:42 · answer #3 · answered by dr c 4 · 0⤊ 1⤋
The moon is spherical in shape just like the earth and it revolves with the earth round the sun. All the planets are spherical in shape, so is moon . Note all that makes up the solar system are spherical in shape.there are also other planets that have moon.(use the word spherical)
2006-11-17 09:51:36 · answer #4 · answered by Stanley n 1 · 0⤊ 1⤋