Any research or scientific inquiry begins with a problem to solve, or a desire / need to discover new information. One of the best way to start this inquiry is by posing questions which will guide or direct the research, so it is important to ask the RIGHT questions.
The Knowledge Compass Question Toolkit, and associated website provides a range or question frameworks that teachers can use with students to guide them in creating powerful questions for thier inquiry / research.
Introduction to questioning
Research Process Templates
Research Process Questions
Defining your research task (template)
Developing your focus questions (template)
Evaluating your research task (template)
Quotes about Questions (19 quote pages)