How search engines work

Google, bing, Yahoo

Why do the search results come up in order?

The website is rated on the links it has and how good the links are. The ones with the best links will come up first on the search results. Wikipedia is the website which is usually the website that pops up for every web search.

How quick do results come up?

Under 1 second

The results of what you type in comes up in bout 0.5 seconds. For instance if you type in 'How old can we get?' It will come up in under 1 sec with millions of results.