College can be very different from high school; you are much more independent and being nervous is normal. They aren’t idiotic questions.
In college, students are still students, but your ‘teachers’ become professors. Professors do assign homework, but they aren’t going to walk around the classroom to check it. They will assign a due date and you will submit it at the beginning of class (in most cases). They’ll return it a week or so later – usually an older student called a teaching assistant (TA, for short) will do the grading.
Most professors know a student by name, yes. Do most professors know all of their students by name? No way! It’s good to know your professors and have them know you, though. Go to office hours, sit in the front of the classroom, and ask engaging questions. If you want them to know your name, it’s easy to make it happen.
At your orientation, you will learn a great amount about campus. Given that you will know your schedule and courses as of student orientation (course registration is part of this), you will have time in the week that you move in to walk around campus and learn where your classes are each day. But no, the professor is not going to kill you if you’re late! They will be very understanding.
At the worst, you have 10 minutes between classes. Many students have a few hours. It’s easy to get between the DCC and West Hall (buildings at the extreme corners of where classes are held) in ten minutes.
Don’t worry – you’ll have plenty of time to settle in and do well here.