Certified Storm Water Operator Practice Exam

Question: 1 / 400

Which type of particles tends to settle rapidly in a sediment basin?

Clay

Silt

Sand

The rapid settling of particles in a sediment basin is influenced by their size and density. Sand particles, being larger and heavier compared to clay and silt, have a greater settling velocity due to their mass and the influence of gravity. When water flows into a sediment basin, the reduction in flow velocity allows heavier particles like sand to settle at the bottom much more quickly than finer particles.

Clay and silt particles are smaller and have a very low settling rate, leading to prolonged suspension in water. Organic matter can vary widely in size and density, but in many cases, it is also less dense than sand and tends not to settle as rapidly under similar conditions. Thus, sand particles dominate in terms of quick sedimentation in a basin, making it the correct choice in this context.

Get further explanation with Examzify DeepDiveBeta

Organic matter

Next Question

Report this question

Download Certified Storm Water Operator Practice Exam PDF Study Guide
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy