Students from the University of Rhode Island will answer questions about oceanography during live broadcasts from the school's research vessel. Eight students from the honors program leave tomorrow for a six-day oceanographic research expedition on the RV Endeavor. They're studying whale and zooplankton interactions with the environment that occur in waters off Rhode Island. The broadcasts are scheduled for 7 p.m. Thursday, 7 p.m. Friday and 6 p.m. Saturday.