1 These classes teach students about goal-setting, using campus resources, and making the most of the college experience.  Do make a list of alternative class choices in case the classes you select are full. At many schools itâs not uncommon for underclassmen to have trouble getting into their first choices.
Upstream vs downstream. Upstream direction is the end of the waterway from where the flow of water originates. Where the flow ends, at the opposite end of the waterway. For exemple, from Kingston to Toronto you are heading upstream, the water emptying from a river back into the ocean. Kingston to Cornwall is downstream.
What is the difference between a dam, a weir and a barrage? A weir is an impervious barrier constructed across a river to raise the water level on the upstream side. The water is raised up to the required height and the water then flows over the weir. In a weir the water overflows the weir, but in a dam the water overflows through a special place called a spillway. Weirs have traditionally been used to create mill ponds.