Mastering the Art of Canoeing: The Science of Paddling Upstream and Downstream
Why is paddling a canoe easier near the shores when going upstream?
A. The current is weaker near the edges
B. The water is calmer near the shore
C. There are fewer obstacles near the shore
What is the advantage of canoeing in the middle of the river when going downstream?
A. Faster current in the middle
B. Safer route in the middle
C. Calmer waters in the middle
Answer:
A. The current is weaker near the edges
A. Faster current in the middle
Paddling a canoe upstream is easier near the shores where the current is weaker, while canoeing downstream is more efficient in the middle where the current is stronger.
When paddling a canoe upstream, it is advised to stay close to the shore because the current is weaker near the edges of a river. This is caused by friction between the water and the riverbed as well as the riverbanks, which slows down the flow. Conversely, when canoeing downstream, the middle of the river is usually the deepest part, resulting in a swifter current that can make the trip easier and faster. The central flow can carry the canoe more effectively, allowing for better maneuverability and less paddling effort.