A research assignment needs more than just a topic. Research is problem-solving with information. It is more than a simple report of what is already known.
As you brainstorm a topic, you will probably find something within that topic to investigate. This is called an angle. The angle is a smaller, more specific element within the larger topic. The angles is what you will investigate with the context of the larger topic.
Once you have an angle, create a question about what you want to investigate. This research question shapes and guides your search for sources and ultimately your paper.
The process flow is illustrated in these images.