Informative speeches give the speaker a chance to tell an audience about something interesting, useful or unique. An informative speech teaches the audience about a particular topic by providing facts. It does not attempt to persuade or convince the audience of something.
There are four main topics of informative speeches: objects, processes, events and concepts. Speeches about objects talk about things that exist in the world. Informative speeches regarding processes talk about different patterns of action and sometimes offer how-to advice. Speeches about events deal with things that have already happened, are happening or are expected to happen. An informative speech about a concept focuses on a particular belief, idea or theory. Informative speeches about concepts tend to be more abstract than the others.