A riverboat with a steam powered engine that could travel either upstream or downstream was called a steam boat.
A steamboat is a riverboat with a steam powered engine that could travel up or down stream.
Before steam engines came into use, travel on land was mostly powered by horse. On water, it was mostly powered by wind.
steamboat
steamboat
Oars
large boats?
Oars
what was fulton dream for steam powered trave
Because you are adding more water, which makes the discharge greater.
The same circles will form and travel downstream
As pebbles are transported downstream by the flowing water, they collide with each other and with other debris, causing them to break into smaller fragments. This process is known as attrition and leads to the gradual decrease in pebble size as they travel downstream. Additionally, smaller pebbles are also more easily carried by the current, allowing them to be transported further downstream.