GEOLOGY

Detailed explanation-1: -Which Earth material covering the surface of a landfill would permit the LEAST amount of rainwater to infiltrate the surface? Remember, the larger the particle size, the greater permeability. Clay is the smallest material there thus it would allow the least a, out of rainwater to infiltrate the surface.

Detailed explanation-2: -What surface would allow the most runoff and least infiltration of rain water? Cement.

Detailed explanation-3: -Sandy soil will generally produce the least surface runoff. Soil texture information can assist with anticipating potential water storage and runoff. Keep in mind, of course, that it is still important to consider specifics of the situation such as soil moisture content and the rate of rainfall or snowmelt.

Detailed explanation-4: -The infiltration of water into the sand is faster than into the clay. The sand is said to have a higher infiltration rate. The infiltration rate of a soil is the velocity at which water can seep into it.

Detailed explanation-5: -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. Gravel has the highest permeability.