Q:

Which agent of erosion creates sand dunes?

A:

Quick Answer

Wind is the agent of erosion that creates sand dunes. The wind blows grains of sand into a sheltered or otherwise secure location, allowing gradual accumulation.

Know More
Which agent of erosion creates sand dunes?
Credit: David Brossard Flickr CC-BY-2.0

Full Answer

Each dune features a windward face and a slip face. The windward face is the area where the sand is blowing and pushing materials upward. The slip face is the side that does not experience wind. Dunes that are formed underwater experience a similar phenomenon but through currents of water instead.

Sand dunes are classified by shape. Crescentric dunes are crescent-shaped, while linear dunes are mostly straight. Star dunes occur when wind from many different directions blows sand. Dome dunes are circular, lacking a slip face. Parabolic dunes are formed by wind that blows outward from their center.


Is this answer helpful?

Similar Questions

  • Q:

    What are wind and water erosion not likely to affect?

    A:

    Wind and water erosion are least likely to affect igneous sills and cooled lava flows. Limestone, basalt and quartzite are also unlikely to undergo erosion or weathering, as are sandstone and chert. Soil and soft rocks such as clays erode very quickly without protection.

    Full Answer >
    Filed Under:
  • Q:

    What is erosion?

    A:

    Erosion is a natural process in which rocks or soil are moved from one location to another by wind or water. Material may move through erosion for distances ranging from a few feet to thousands of miles. Erosion often is most noticeable along shorelines, but it occurs in a variety of areas throughout the world.

    Full Answer >
    Filed Under:
  • Q:

    How is wind erosion different from water erosion?

    A:

    Wind erosion happens when pieces of the Earth are worn away by strong winds over time, and water erosion happens when moving water such as ocean waves wear away rock instead of seeping into the ground. Water is a more powerful erosion force than wind.

    Full Answer >
    Filed Under:
  • Q:

    What is riverbank erosion?

    A:

    Riverbank erosion is the deterioration of the banks of a river or stream. It occurs when the top soil that encloses a river or stream washes away. Riverbank erosion is a natural occurrence that allows rivers to flow on a proper course. However, when accelerated because of unnatural causes, the water system is susceptible to a disproportionate sediment supply, stream channel instability and habitat loss, according to the EPA.

    Full Answer >
    Filed Under:

Explore