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Originally Posted by Vonnie  I've just discovered that explaining the concept of gravity to a 5 year old is quite a challenge. |
Start off by explaining that each and every piece of matter attracts any other piece of matter with a force which is directly proportional to the sum of their masses and inversely proportional to the square of the distance between them. Once he's got that you can move on to Einstein's general theory of relativity and the curvature of space-time around massive objects, which is where we start really getting to the roots of what gravity is all about.
Explain that a hypothesised particle, the graviton, is responsible for the force of gravity but one has yet to be detected.
