I just like to know what kind of field I'm going to part of before I commit to it, that's all.
If you're looking to decide on a specialty based on style of rounds, I agree that it's way too early to be worrying about that.
If you're wondering about the basics of being a physician, suffice to say it varies tremendously depending on the field.
I'll bite and answer your question on rounds just because this thread will go nowhere otherwise.
That, and I feel a certain obligation as I'm the mod.
"Rounds" usually consist of seeing patients, one at a time, while asking pertinent questions and doing a focused physical exam. You document your findings in the chart as a progress note, complete with vital signs, lab/imaging study results, and then you include your assessment and plan. (To read more about this, look up "SOAP" or "progress"
Rounds can be conducted by yourself, early in the morning (usually "pre-rounds"), with other residents ("team rounds"), the chief resident ("chief rounds"), or the attending ("attending rounds"). The style, length, intensity and focus will vary depending on what specialty you're in.
In some fields (e.g. Internal Medicine), rounds act as a springboard for further discussion. On some rotations, you'll spend all day rounding and discussing interesting patients, diseases, treatments, etc. In other fields (e.g. surgical ones), you quickly round in the morning before heading off to the OR at around 0715. You'll likely check up on any sick patients throughout the day.
I should add that I just did a search with the keyword "rounds" (both in the med student and resident forums), and there are tons of hits. Those threads will also have the info you're looking for.
Edit: I just noticed that you're still in high school and deciding what to major in during undergrad. So it's a little early to be worrying about rounds.