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gravity makes all gas and liquid form into sphere, because on the surface of the sphere the strength of gravity is equal. gravity will make solid matters attract together, but not enough to break the structure of the matters, so they stay same shape.that's why all the stars and planets are sphere.
There are many different underlying factors that lead to spherical bodies.Gravity causes large bodies to adopt a spherical shape because the sphere allows every part to be as close as possible to the center. Any deviation from the sphere increases the distance from whatever moved to the center (the only way to move is away, or "up").Intermolecular forces (the underlying cause of "surface tension") cause bodies of water or other liquids to adopt spherical shapes because the sphere allows the greatest number of molecules (or atoms) to be next to other molecules (or atoms) of the same type, which is favorable. For instance, a water molecule is "happiest" or most stable, when it is in contact with two other water molecules. This means that there is an "energetic tax" for having water molecules with only one neighbor (water molecules at the surface). So the shape with the least amount of surface area will be the most stable (and this happens to be a sphere).Of course, this spherical preference can be overridden when other forces are at play. For instance, most lakes are not spherical, because the gravity of the Earth is strong enough to collapse a sphere of water large enough to be a lake. For smaller amounts of water (drops/droplets) the spherical preference overrides the gravitational force.
Why does a flame not flow up in microgravity.it curls into a sphere?
Quote from: gazza711 on 06/07/2015 19:54:09Why does a flame not flow up in microgravity.it curls into a sphere?Because by definition there is no "up" in microgravity - or at best only a "micro-up" - so the process of combustion takes place symmetrically.
Ok.how would you heat up the interior of iss if no convection?