Once you are done reading what a probability cloud is on wikipedia.org I would like to share with you the clever concept of Accessibility versus Accuracy as I heard it from "Made to Stick" by Dan and Chip Heath.
When you are sharing a concept you have to first make a decision, do you want them to get the idea, or get the idea?
Sharing with elementary students how the electrons of an atom revolve around the nucleus much like the solar system will get them close enough to understand. If your audience is comprised of Ph.D. candidates you might want to take the probability cloud approach, which would be more accurate.
Do you have a complex message that you are blessed to share. Consider the benefits of Accessibility versus Accuracy.