Places of steep drops in elevation in the course of a river are called ______

Bodies of seawater of considerable volume moving along and parallel to the shore are called ______

There is a spontaneous change from liquid to vapour state and back to liquid state at the point of fall of waterfall.

The mechanical loosening and removal of the material from the rocks due to pressure exerted by the running water is call…

The type of reefs that occur from a distance of shore and have flat-topped ridges are ______

What is the principal method of stream erosion and involves wearing away of the bedrocks?

The variously shaped depressions of different dimensions that are developed in the riverbed are called ______

Every major river is associated with a valley of its own.