Silt. Silt is granular material of a size somewhere between sand and clay whose mineral origin is quartz and feldspar. Silt may occur as a soil or as suspended sediment in a surface water body. It may also exist as soil deposited at the bottom of a water body.
In North America, a grade-separated junction may be referred to as a grade separation or as an interchange â in contrast with an intersection, at-grade, a diamond crossing or a level crossing, which are not grade-separated. 1 Effects.
Report Abuse. Grade level is the grade you are currently in, or are going into. Grade levels range from Grade 1 to Grade 12. Grade 12 being the highest. If you have completed a Grade then you have been promoted to the next grade, in your case you have completed Grade 9 and starting at your next school you will be in grade 10.