how is soil formed?

Answer 1

Weathering of rocks + organic matter from plants.

Answer 2

The formation of soil happens over a very long period of time. It can take 1000 years or more. Soil is formed from the weathering of rocks and minerals. The surface rocks break down into smaller pieces through a process of weathering and is then mixed with moss and organic matter. Over time this creates a thin layer of soil. Plants help the development of the soil. How? The plants attract animals, and when the animals die, their bodies decay. Decaying matter makes the soil thick and rich. This continues until the soil is fully formed. The soil then supports many different plants.

Weathering:
Weathering is the process of the breaking down rocks. There are two different types of weathering. Physical weathering and chemical weathering.
In physical weathering it breaks down the rocks, but what it's made of stays the same. In chemical weathering it still breaks down the rocks, but it may change what it's made of. For instance, a hard material may change to a soft material after chemical weathering

Answer 3

soil is formed due to weathering of ROCKS
this process takes a lot of time
different ways by which soil is formed are:-
1. During the rains water gets collected in the rocks. as the winters arrive the water freezes and creates cracks witihn the rock.

2. Differtent plant seeds grow on the rocks. As they grow bigger the roots of the plants get embedded in the surface of rocks causing cracks.

3. Natural disaters like earthquake and volcanoes also help in rock formation.

Answer 4

Soil is rock in its final state of decay. After millions of years of weathering it has broken down to fine mineral particles, the composition of the original rock and the processes which have acted on it, have determined its present form. Water, wind, movement, chemical action and varying temperatures act on the rock dividing it into smaller and smaller particles. In most of the British Isles the soil is unlikely to be sedentary, ie. formed directly above the parent rock with a gradient of particles becoming fissured rock as you dig down. The soil here in Northern Ireland is transported soil which was moved great distances during the Ice Ages and has a definite boundary between soil and the bedrock on which it was deposited.

Igneous rocks, eg. bassalt, were the first to form when the molten lava cooled, then the erosion began. The process is sometimes reversed producing sedimentary and metamorphic rocks by compression, chemical action or extreme temperature. Sandstone is formed by chemical action and compression and further pressure changes it to quartzite. Further compression of limestone produces marble. Shale and slate are compressed silt. Fossils are found in these sedimentary rocks, when they were laid down in a short time trapping the original creature or plant,

Answer 5

Soil is formed from the old rocks. soil formation is just the process of withering of rocks. Rocks experience very extreme conditions such as very cold conditions or very hot and sunny conditions or rainy conditions.so these big and huge rocks slowly break up into smaller rocks and process goes on until they become ur very tiny sized soil....

Answer 6

soil is the uppermost layer of the crust on the earth and contains a mixture of mineral matter,such as sand clay.it also contains organic matter such as decayed leaves,flowers,minute bacteria etc.the decayed remains of the plants and animals is called humus.
soil is formed very slowly by the weathering of rocks,and it may even take one thousand years to form a layer of soil.the solid found at the site of their formation or origin are known as sedentary soil.others brought from elsewhere by natural agencies are called transported soil.
let me also tell u bout' the soil profile.
the process Of weathering breaks up exposed rock surfaces into fine particles.thus on the top we have a layer of top-soil or horizon with the particles and mineral matter.rain water percolating through the top-soil washes down some of the finest particles of soil into the second layer,and also dissolves and washes down the soluble materials.this washing process is known as leaching.the second layer called the sub-soil or B horizon,becomes fine and compact due to the materials washed down into it.the third layer termed as C horizon is made up of decomposed and much of the broken rocks known as mantle rocks.D horizon,below the C horizon belong to the unweathered parent rock.
hope u knew a lot bout' soil.if u have any queries iam ready to help u.

Answer 7

Soil is formed by the breaking of rocks and decomposition of dead matters of plants and animals

Answer 8

soil is formed by weathering of rocks a process that takes place very slowly

Answer 9

the bedrock will experience denudation which will result in the breaking down of the rocks...after many years(about thirty years)...a thin layer of soil would be formed...

Answer 10

my un-scientific answer? It is formed when material (such as leaves, twigs, etc.) is naturally composted. It is also formed by erosion when wind and water passes over rock.