Topic+1+-+How+Search+Engines+Work



Today when we have a question and we are unsure of the answer, the first thing we do is go to Google. Google is so poplar that its name is synonymous (known) with searching. So often people use the phrase “Google it” when someone asks them a question that they do not know. With all this searching, it is important to know how search engines work and how to make them work for you.

A search engine is a software program that allows you to search the Internet by keywords. Keywords are important words or phrases that are within web documents. Even though all search engines are unique in a certain way, they all have built in keyword searches. Search engines contain two parts that allows them to find and store everything in the Internet. These search engines are called spiders and indexes. A spider is a search engine robot that searches the Internet for keywords. This spider scans each website for its keywords and returns days or weeks later to look for updates or changes to the website. An index is the where the spider stores its information. After each website is scanned it become part of that search engine’s database. A database is a collection of information that is organized and arranged for retrieval by a computer. Some search engines are known to index every word on a webpage and others index only the titles, and every word excluding articles (a, an, the) and conjunctions (and, but, or, yet, etc.).

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