Rhetorical questions carry the purpose of persuasion, which you obviously don't need in a research paper, where everything is based on fact. This usually applies in the case of discursive essays, or narrations. Plus, an audience listening to a research paper will probably only be interested in the information strictly, and will be irritated by rhetorical questions.
A research paper is fact and nothing but the fact. A research paper is just giving information about a topic. However, rhetorical questions are used to persuade the reader to believe or agree with something, mainly in a discursive essay; but in a research paper, you aren't persuading, you are educating.
the creaks of the wood planks, the wind and ots ghostly whistle, the old style and how descriptive it is. not to forget about the examples of how the wind sounded.
To practice using formal and informal style, write two short paragraphs in your journal summarizing a topic on the Civil War (3-4 sentences). Write one paragraph as if you are writing for a textbook on the Civil War. Write the second paragraph as if you creating a video script for young kids to get them interested in the Civil War.