I am a freshman undergrad in physics and want to apply for a summer research scholarship which is given to one or two physics undergraduates in the university. The catch is that you need to have a "proposed faculty supervisor." Tomorrow, I plan to ask my physics professor from last quarter if he would be willing. Do you guys have any suggestions for how I should ask? Should I just knock on his office door with no warning, or should I email him in advance? What kinds of questions should I be prepared to answer? Thanks.