Research as Strategic Exploration:
You want to approach your research as a quest to uncover answers to questions that didn't exist before. Seeking information to answer research questions is fun and it helps you explore your topic fully and focus it more specifically.
Your research questions help you develop a plan or roadmap for you to follow as you research.
The video below explains why you should always begin your search for relevant, credible information by creating a list of research questions that will drive your research.
To make your topic manageable and meaningful you need to focus on particular aspects of it. You'll get too much information if you stick with an overly-broad concept like black death; you'll get too little information if you just try to answer a narrow question like What were the causes of the black death.
Your research questions can help you focus your topic by identifying different aspects of it you want to explore.
Even if your teacher gives you specific questions to answer, you'll need to break them down into smaller questions so that you can explore your teacher's question thoroughly. For example:
Write on the role of the urban working class in the French Revolution.