A delta is usually formed when a river empties its water into an ocean, a lake or any other body of water. Some of the river's sediments are deposited at its mouth, forming a delta.
A delta is a wetland, which means an area of land that is saturated or covered by water. There are three kinds of delta, fan-shaped or arcuate, cuspate and bird's foot. The fan-shaped delta is formed when a river splits numerous times at its mouth, forming a fan effect. An example is the Niger Delta. An arcuate delta is tooth-shaped and the pointed version is the cuspate type, for example, the Tiber Delta. An example of the bird's foot type is the Mississippi Delta, which has a few, broadly spaced tributaries that seem bird-like.Learn More
The four layers of soil from top to bottom are the O, A, B and C Horizons. The soils vary in color, mineral content, structure and texture; characteristics that play an important role in their function.Full Answer >
Sandy soils are granular soils that contain small rock and mineral particles. The texture of sandy soils is usually gritty. This soil feels course whether it is dry or wet.Full Answer >
Quicksand is real, but contrary to certain myths, quicksand is not prevalent in deserts. Quicksand can be found in damp areas such as lakes and beaches. The difference between quicksand and regular sand is the amount of water surrounding the sand particles.Full Answer >
Soil is created from the erosion of rocks by weather or mechanical processes. Over a very long time, the surface of the rock softens, decays and becomes soil.Full Answer >