Which particle size range corresponds to the term "Gravel"?

The term "Gravel" in the context of particle size classification is defined based on established standards in soil and material science. Gravel is comprised of larger particles that typically range from 4.75 mm to 75 mm in diameter. This classification is crucial for various applications in civil engineering, such as in aggregate for concrete, drainage systems, and road construction.

The specified range encompasses both fine gravel (4.75 mm to 20 mm) and coarse gravel (20 mm to 75 mm). Such a range is significant because it indicates that gravel provides good drainage properties, strength when compacted, and a relatively high resistance to the forces exerted on it, making it suitable for construction and engineering projects.

Understanding this classification helps engineers select appropriate materials for specific applications, ensuring structural stability and effective drainage. The other options reflect different size classifications, such as sand or silt, which fall outside the gravel range defined by established standards.