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. 1  Grade Meaning. 2  Grade level is the grade you are currently in, or are going into. 3  Contact the school your going to.  It's probably the grade you will be going 1  into. I Think it means you can move onto 10th.  well you should probably know what that means by 10th grade..