No, parent rock is not weathered particles. It's the source of the weathered particles.

Here's a breakdown:

* Parent Rock: The original, solid rock that is exposed to weathering. Think of it as the foundation.

* Weathering: The process that breaks down the parent rock into smaller pieces. Think of it as the construction crew.

* Weathered Particles: The resulting smaller fragments from the weathering process. Think of the building blocks.

So, the parent rock is the starting point, and the weathered particles are the result of the parent rock being broken down.