GEOLOGY

Detailed explanation-1: -Gravel and sand are both porous and permeable, making them good aquifer materials.

Detailed explanation-2: -So, how to define permeability? Its meaning could pertain to the ease of the fluid to flow through pores. For example, an extremely porous rock with unconnected pores has low or no permeability. On the other hand, a rock with few connected pores will ease the flow of fluids through the rock.

Detailed explanation-3: -The permeability of a soil can be determined by calculating its infiltration rate. Soils with sandy textures have large pore spaces that allow rainfall to drain very quickly through the soil. Sandy soils are known to have high permeability, which results in high infiltration rates and good drainage.

Detailed explanation-4: -Physical characteristics of soil par-ticles, such as size and shape, influence the porosity and permeability of soils and rocks. Coarse materials, like gravel and sand, tend to be both porous (they have large pore spaces that can fill with water) and permeable (water passes easily between the large particles).