There are several ways you can take your topic/phenomenon and develop that into a research question. A very simple method is to use the acronym TAPP:
|Time - Is there a time period that interests you?|
|Aspect - Is there a particular aspect of the topic that interests you?|
|Place - Is there a specific geographic region or area that interests you?|
|Population - Is there a specific population that interests you?|
Good research begins with good keywords. This brief video from the University Library at UNC Greensboro explains how to turn your research question into useful keywords. Transcript.
If you would like more practice with keywords, check out the rest of their tutorial!