The grinding and scratching of rock fragments carried by a glacier against rocks or other fragments is called:

Question

Quizplus · Accepted Answer

Abrasion is the process of scraping and grinding of rock fragments by the movement of ice or other agents such as water, wind or waves against rocks. Plucking refers to the process of lifting and removing rock fragments by the glacier's movement while calving refers to the breaking off of ice chunks from the glacier's edge. Retreating refers to the movement of a glacier back uphill rather than advancing downhill.

The Grinding and Scratching of Rock Fragments Carried by a Glacier