Question: Water moves rapidly down the steep slopes near a stream's source, and it moves more slowly on the gentle slopes near the mouth. What explains the different particle sizes seen in the streambed of a mountain stream near its source: Mountain stream - Wikipedia versus near its mouth?: Stream mouth on Clonea Strand © Oliver Dixon cc-by-sa/2.0 :: Geograph Ireland Question options: There is more water near a stream's source so it transports larger particles there There is more water near a stream's mouth so it transports larger particles there The faster water near a stream's mouth moves larger particles than the slower water near a stream's source The faster water near a stream's source moves larger particles than the slower water near a stream's mouth