https://padlet.com/shiprayadav/soil Group Activity Year 9 en-us 2016-10-12 07:12:23 UTC 2023-02-13 17:02:53 UTC hello@padlet.com https://padletuploads.blob.core.windows.net/aws/93728086/beb20604b70f71975787ac39db6e35a8/soilbnr2.jpg https://padlet.com/shiprayadav/soil/wish/130066805 Definition of:-
Soil: the upper layer of earth in which plants grow, a black or dark brown material typically consisting of a mixture of organic remains, clay, and rock particles.
Humus:The organic component of soil, formed by the decomposition of leaves and other plant material by soil microorganisms.
Nutrients: A substance that provides nourishment for growth or metabolism. Plants absorb nutrients mainly from the soil in the form of minerals and other inorganic compounds, and animals obtain nutrients from ingested foods.

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Chemical weathering is caused by rain water reacting with the mineral grains in rocks to form new minerals (clays) and soluble salts. These reactions occur particularly when the water is slightly acidic.

]]> 2016-10-12 09:44:30 UTC https://padlet.com/shiprayadav/soil/wish/130067069 https://padlet.com/shiprayadav/soil/wish/130067106 Topsoil
Eluvation layer
SubSoil
Regolith
Bedrock
These layers form through the help of each other one way or another
(Group 5 Sahel Raphael)

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The soil profile is an important tool in nutrient management. By examining a soil profile, we can gain valuable insight into soil fertility-
For instance, a highly weathered, infertile soil usually contains a light-colored layer in the subsurface soil from which nutrients have leached away.]]> 2016-10-12 09:45:29 UTC https://padlet.com/shiprayadav/soil/wish/130067245 https://padlet.com/shiprayadav/soil/wish/130067273 All soils initially come from rocks, this is termed the ‘parent material’. The Parent Material may be directly below the soil, or great distances away if wind, water or glaciers have transported the soil.

In addition to the soil parent material, soil formation is also dependent upon other prevailing processes affecting soil formation. The soil formation process is termed 'pedogenesis'. Climatic conditions are important factors affecting both the form and rate of physical and chemical weathering of the parent material.

The formation of soils can be seen as a combination of the products of weathering, of structural development of the soil, of differentiation of that structure into horizons or layers, and lastly of its movement or translocation. In fact there are many ways in which soil may be transported away from the location where it was first formed.


]]> 2016-10-12 09:45:36 UTC https://padlet.com/shiprayadav/soil/wish/130067273 https://padlet.com/shiprayadav/soil/wish/130067458  ]]> 2016-10-12 09:46:32 UTC https://padlet.com/shiprayadav/soil/wish/130067458 https://padlet.com/shiprayadav/soil/wish/130067870 When parent rock material is exposed to the atmosphere or when organic matter and/or minerals are deposited on the earth's surface, soil formation begins. The type of parent material and how the soil is formed will greatly influence the properties of the soil.]]> 2016-10-12 09:48:46 UTC https://padlet.com/shiprayadav/soil/wish/130067870 https://padlet.com/shiprayadav/soil/wish/130067952 The soil profile is one of the most important concepts in soil science. It is a key to understanding the processes that have taken in soil development and is the means of determining the types of soil that occur and is the basis for their classification. The soil profile is defined as a vertical section of the soil from the ground surface downwards to where the soil meets the underlying rock. The soil profile can be as little as 10 cm thick in immature soils and as deep as several metres in tropical areas where the climate is conducive to rapid alteration of the underlying rock to form soil. In temperate areas, the soil profile is often around a metre deep and in arid areas somewhat shallower than this.]]> 2016-10-12 09:49:15 UTC https://padlet.com/shiprayadav/soil/wish/130067952 https://padlet.com/shiprayadav/soil/wish/130068803 Soil is a mixture of clay and sand and rotting vegelaterring 
Humus it's is the thin layer of vegetation such as grass
Nutrient a substance that provides nourishment for life and growth ]]> 2016-10-12 09:54:15 UTC https://padlet.com/shiprayadav/soil/wish/130068803