Tell me everything that u guys know about sand and dirt. I want everything....?

Answer 1

The most common constituent of sand, in inland continental settings and non-tropical coastal settings, is silica (silicon dioxide, or SiO2), usually in the form of quartz, which, because of its chemical inertness and considerable hardness, is resistant to weathering. The composition of sand varies according to local rock sources and conditions. The bright white sands found in tropical and subtropical coastal settings are ground-up limestone. Arkose is a sand or sandstone with considerable feldspar content which is derived from the weathering and erosion of a (usually nearby) granite. Some locations have sands that contain magnetite, chlorite, glauconite or gypsum. Sands rich in magnetite are dark to black in color, as are sands derived from volcanic basalts. The chlorite-glauconite bearing sands are typically green in color, as are sands derived from basalts (lavas) with a high olivine content. The gypsum sand dunes of the White Sands National Monument in New Mexico are famous for their bright, white color. Sand deposits in some areas contain garnets and other resistant minerals, including some small gemstones.

Soils tend to develop an individualistic pattern of horizontal zonation under the influence of site specific soil-forming factors. The composition of these individual soil horizons, and their relationship with the soil profile is key to understanding behavior of your self Soil color, soil structure, and soil texture are especially important components of soil morphology. There are many characteristics of soil and there is a complete website full of information. Check it out on http://www.krishiworld.in

Soil color is the first impression one has when viewing soil. Striking colors and contrasting patterns are especially memorable. The Red River (Mississippi watershed) carries sediment eroded from extensive reddish soils like Port Silt Loam in Oklahoma. The Yellow River in China carries yellow sediment from eroding loessal soils. Mollisols in the Great Plains are darkened and enriched by organic matter. Podsols in boreal forests have highly contrasting layers due to acidity and leaching.

Soil color is primarily influenced by soil mineralogy. The extensive and various iron minerals in soil are responsible for an array of soil pigmentation. Color development and distribution of color within a soil profile result from chemical weathering, especially redox reactions. As the primary minerals in soil-parent material weather, the elements combine into new and colorful compounds. Iron forms secondary minerals with a yellow or red color; organic matter decomposes into black and brown compounds; and manganese forms black mineral deposits. These pigments give soil its various colors and patterns and are further affected by environmental factors. Aerobic conditions produce uniform or gradual color changes while reducing environments result in disrupted color flow with complex, mottled patterns and points of color concentration.

Soil structure is the arrangement of soil particles into aggregates. These may have various shapes, sizes and degrees of development or expression. Soil structure influences aeration, water movement, erosion resistance, and root penetration. Observing structure gives clues to texture, chemical and mineralogical conditions, organic content, biological activity, and past use, or abuse.

Surface soil structure is the primary component of tilth. Where soil mineral particles are both separated and bridged by organic-matter-breakdown products and soil-biota exudates, it makes the soil easy to work. Cultivation, earthworms, frost action and rodents mix the soil. This activity decreases the size of the peds to form a granular (or crumb) structure. This structure allows for good porosity and easy movement of air and water. The combination of ease in tillage, good moisture and air-handling capabilities, good structure for planting and germination are definitive of good tilth.

Soil texture refers to sand, silt and clay composition in combination with gravel and larger-material content. Sand and silt are the product of physical weathering while clay is the product of chemical weathering. Clay content is particularly influential on soil behavior due to a high retention capacity for nutrients and water. Due to superior aggregation, clay soils resist wind and water erosion better than silty and sandy soils. In medium-textured soils, clay can tend to move downward through the soil profile to accumulate as illuvium in the subsoil. The lighter-textured, surface soils are more responsive to management inputs, but also more vulnerable to erosion and contamination.

Texture influences many physical aspects of soil behavior. Available water capacity increases with silt and, more importantly, clay content. Nutrient-retention capacity tends to follow the same relationship. Plant growth, and many uses which rely on soil, tends to favor medium-textured soils, such as loam and sandy loam. A balance in air and water-handling characteristics within medium-textured soils are largely responsible for this.

Answer 2

Basicly sand is just erroded rock. Through chemical and mechanical means, the same rock that has built a mountain is reduced to fine grains of sand.

Dirt aka soil, is a completely different thing. Soil is 50% air and/or water, biological chemical compounds from the surrounding foliage, the simple oraganisms that break down plant and animal mass, micro-organisisms that live off of simple organisms, chemical nutriants, and a bit of sand for filler.

Soil is different everywhere. It is entirely dependant on the biological system that it is a part of. The plants and animals that live inand on soil depend on it and the soil depends on the life it helps suport.

It's a circle of life thing.

Answer 3

Kids get in trouble for playing in dirt, especially if they have a perfectly good sand box to play in. Also dirt is a lot dirtier than sand and sand is a lot sandier than dirt. I hope this clears up this rather dirty subject for you.

Answer 4

Think about what dirt is made of. What are the inorganic components? (minerals, etc.) What are the organic components? (animals, dead or alive)
What does dirt have that sand doesn't?

Answer 5

Thats imposible. People earn pHD's for that kind of stuff.

Answer 6

when forcefully injected in head through your nostrils, you'll prob. suffocate and die