Final answer:
The product of weathering does include clastic sedimentary grains like sand and silt, thereby forming clastic sedimentary rocks. These rocks are composed of broken-down fragments of older rocks carried by natural forces to new locations where they eventually deposit and consolidate.
Step-by-step explanation:
The statement that the product of weathering includes clastic sedimentary grains such as sand and silt is true. Clastic sedimentary rocks are formed through various processes. Initially, pre-existing rock undergoes both chemical and mechanical weathering caused by natural elements like roots, acid rainwater, gravity, wind and water. During these processes, the rock is broken down into smaller particles. Examples of such particles are quartz and feldspar which, after being altered by weathering, form sand and clay respectively.
Transport of these particles occurs when they are carried by water or air to locations where the current is slow enough for deposition. Over time, this material accumulates and is consolidated into distinct sedimentary rocks such as sandstone, which is composed largely of sand-sized grains, and siltstone, which is composed of smaller silt-sized particles. This explains how clastic sedimentary rocks are formed, comprising fragments derived from older rocks.