It would not so easy task to write a 500 word essay. But it is a typical essay. 500 words essay include three parts (Introduction, body, and conclusion) which have to describe some object, event or phenomenon in details. You can achieve it by comparing things or making certain associations with the object that you describe. When preparing for your essay for 500 words, put yourself in the reader's place. Think wider. More : domywriting.com/blog/500-word-essay/