GEOLOGY

Detailed explanation-1: -Clay is the most porous sediment but is the least permeable. Clay usually acts as an aquitard, impeding the flow of water. Gravel and sand are both porous and permeable, making them good aquifer materials.

Detailed explanation-2: -Clay textured soils have small pore spaces that cause water to drain slowly through the soil. Clay soils are known to have low permeability, which results in low infiltration rates and poor drainage. As more water fills the pore space, the air is pushed out.

Detailed explanation-3: -Explanation: Clay can have a very high porosity. Because its grains are very small, there are a lot of (small) pore spaces in between them. What clay does not have is good permeability, which is a measure of how “connected” these pore spaces are. Clay can hold a lot of water, but it doesn’t let it flow very well.

Detailed explanation-4: -Wet soils arranged from fastest to slowest permeabilities are gravel, potting soil, sand, silt, and clay. Diffusion arranged from greatest to least is gravel, potting soil, silt, sand, and clay.

Detailed explanation-5: -Answer and Explanation: Clay is impermeable, or at least it has a very low permeability. The grains in clay are so fine that the spaces between the grains are extremely small. This makes it difficult for water to squeeze through, so water is more likely to simply run off.