You will be told if your answer is correct or not and will be given some comments. On the bottom near the middle. On the bottom near the shore. On the surface near the middle. On the surface near the shore.
Velocity is usually uniform throughout.
In the middle of the river channel. On the inside of the bend. On the outside of the bend. Both lakes and waterfalls are created by stream erosion. Both lakes and waterfalls are destroyed by stream erosion.