Which phrase best describes the mass movement of particles? sediment flowing down a slope sediment collecting on an existing surface transporting materials to a new location breaking materials into smaller particles

Mass movement of particles is the sediment flowing down a slope.

Explanation:

Mass movement is the process in which sand, soil, rock or other particles under the influence of gravity move in the downward direction.

Therefore, mass movement of particles is the sediment flowing down a slope.

When these particles reach downward slope they are collected by some transporting agent and are shifted to other place.  

a.sediment flowing down a slope

how about u try it first

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.