When.com Web Search

  1. Ads

    related to: erosion demonstration for first grade

Search results

  1. Results From The WOW.Com Content Network
  2. Water Resources Development Act of 1974 - Wikipedia

    en.wikipedia.org/wiki/Water_Resources...

    NATIONAL SHORELINE EROSION CONTROL DEVELOPMENT AND DEMONSTRATION PROGRAM Pub. L. 93-251, title I, Sec. 54, Mar. 7, 1974, 88 Stat. 26, known as the Shoreline Erosion Control Demonstration Act of 1974, directed the Secretary of the Army, acting through the Chief of Engineers, to establish and conduct for a period of five fiscal years a national ...

  3. Tetrapod (structure) - Wikipedia

    en.wikipedia.org/wiki/Tetrapod_(structure)

    A tetrapod is a form of wave-dissipating concrete block used to prevent erosion caused by weather and longshore drift, primarily to enforce coastal structures such as seawalls and breakwaters. Tetrapods are made of concrete , and use a tetrahedral shape to dissipate the force of incoming waves by allowing water to flow around rather than ...

  4. Denudation - Wikipedia

    en.wikipedia.org/wiki/Denudation

    Techniques for measuring erosion and denudation include stream load measurement, cosmogenic exposure and burial dating, erosion tracking, topographic measurements, surveying the deposition in reservoirs, landslide mapping, chemical fingerprinting, thermochronology, and analysis of sedimentary records in deposition areas. [26]

  5. Soil erosion - Wikipedia

    en.wikipedia.org/wiki/Soil_erosion

    Bank erosion is the wearing away of the banks of a stream or river. This is distinguished from changes on the bed of the watercourse, which is referred to as scour. Erosion and changes in the form of river banks may be measured by inserting metal rods into the bank and marking the position of the bank surface along the rods at different times. [17]

  6. Exhumation (geology) - Wikipedia

    en.wikipedia.org/wiki/Exhumation_(geology)

    Exhumation by tectonic processes refers to any geological mechanism that brings rocks from deeper crustal levels to shallower crustal levels. While erosion or denudation is fundamental in eventually exposing these deeper rocks at the Earth's surface, the geological phenomenon that drive the rocks to shallower crust are still considered exhumation processes.

  7. Bank erosion - Wikipedia

    en.wikipedia.org/wiki/Bank_erosion

    There are two primary mechanisms of stream bank erosion: fluvial erosion and mass failure. Fluvial erosion is the direct removal of soil particles by flowing water. The rate of fluvial erosion is determined both by the force of the flowing water (e.g. faster flow equals more force) and the resistance of the bank material to erosion (e.g. clay is generally more resistant to erosion than sand).