How Does Google Search
Google has over 30 trillion pages, and is still getting more pages of answers to your question. Google finds your answer by crawling. By crawling Google looks at the word you searched and finds the best pages of websites that you might use. Google sorts the pages of answers of by which websites are used the most by people.
How does all of Google Functions Work?
Google has a whole ton of different functions that it can do. Images,Search, Mail, Documents, Calender, and much, much more. How Does it do all of this stuff? By a lot of information stored on several different web pages. When you search in the search bar it finds the exact page you want.
Google Image's finds any picture you are looking for.
Google Drive/Document lets you type documents and easily share them on a Gmail Account.
Gmail Is your Basic email just through Google.