You have probably studied prewriting strategies--techniques to be performed before you begin drafting your essays. These strategies are meant to generate, or give birth to, ideas, to get you started. As everyone knows, nothing is more frightening than the blank page.
Questioning is just one of these prewriting techniques.
When investigating a topic and beginning to develop supporting points and details, it is often a good idea to ask questions about the topic. That way you can consider several aspects of what you are describing. Become a journalist and ask the standard investigative questions about a topic of your choice--
Who is involved or impacted?
What is happening? What is important? What matters?
When are activities occuring that are essential to understanding the matter?
Where are these activities happening? Where should they be happening?
Why? Become philosophical here. Why does any of this matter? Why should people care?
How can anything be resolved? or improved?
If you would like more information about prewriting, you may want to view the short video below: