Q:

What is Darcy's law?

A:

Quick Answer

Darcy's law is a constitutive equation that explains how fluids are able to flow through a porous medium, such as a rock or sand. This law can be used to describe how water flows through aquifers and reservoirs.

  Know More

Full Answer

The equation demonstrates that the amount of flow a fluid has between two points shares a directly proportional relationship to the distance between the two points, the pressure difference between the two points and the permeability of the flow paths in the rock. Darcy's law is only valid when the fluid's flow is slow and viscous. This law is useful in earth sciences because most groundwater flow is slow and viscous.

Learn more about Soil

Related Questions

  • Q:

    What are the four basic types of soil?

    A:

    The four basic types of soil are sand, silt, clay and loam. Loam, considered a perfect soil, is a mixture of silt, clay and sand. Sand is gritty and contains small particles of minerals and rocks, where silt is smoother than sand and is more fertile.

    Full Answer >
    Filed Under:
  • Q:

    What causes soil erosion?

    A:

    Wind, water, ice and waves carry off soil particles and cause soil erosion. Although this is a natural process, human activities that disturb the surface of the earth increase the rate of soil erosion. Activities such as mining, construction, deforestation and intensive agriculture leave the topsoil exposed and vulnerable to the agents of erosion.

    Full Answer >
    Filed Under:
  • Q:

    What is the importance of evergreen forests?

    A:

    Evergreen forests are important for the protection and sustenance they provide for a wide variety of species ranging from birds to mammals. Evergreens also provide a number of decorative and practical uses for people.

    Full Answer >
    Filed Under:
  • Q:

    Where is iron found in nature?

    A:

    Iron is found throughout the earth, comprising about 32 percent of the earth's crust and up to 80 percent of the Earth's core. It is the second most abundant metal on earth.

    Full Answer >
    Filed Under:

Explore