Does Slope affect erosion & deposition?

In science we are investigating whether different environmental factors affect erosion and deposition of soil.   I have attached photos of the stream tables that were taken during the investigation last week.

Standard Stream table from Science group 1.  Check out the deposition.  Ask your child to identify the alluvial fan.

  
This is the standard stream table from class 2.  Check out the deposition.  Ask your child to identify the location of the canyon. 

This is the canyon on the standard stream table.  Can your child compare and contrast this with the canyon of the sloped stream table? 

  
This is the sloped stream table for group 1.  Compare the location of the alluvial fan with the standard stream table. 

This is the sloped stream table for group 2.  Compare the erosion and deposition with that of a standard stream table. 

Canyon of sloped stream table.  Why does is look so different from the standard stream table?