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Originally Posted by The Ultimate Warrior
strong force and weak force? aren't those just degrees of force?
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Nope.
Strong force is what is responsible for holding the nuclei of atoms together. It's very important on a micro scale. Essentially, it's the glue of the universe holding everything together. It's the strongest of the 4 forces by far. But it only has a very small radius of interaction. Like only on the subatomic level.
Weak force is responsible for radioactive decay. That's what allows stars like the sun to produce energy. It's the force that changes a neutron in an atom to a proton and electron, which causes an energy release. That energy fuels the entire universe.
Ironically, gravity is actually the weakest of all 4 forces. But it has an added advantage in that it interacts across very vast distances. As opposed to the other forces which interact on a much smaller scale. So gravity is very important because all the bodies in the universe are affected by it. It's the force that's most evident.
Anyway, I hope that explains it a little better...