Soil Formation
Gbogbo ọrọ náà
Every crop a farmer grows draws its life from a thin skin of soil, yet that soil did not appear overnight. It is the slow product of solid rock being broken down over hundreds or thousands of years by the weather, by water and air, and by living things. Understanding how soil is made helps a farmer see why some land is deep and rich while other land is shallow and stony, and why soil is a resource that must be protected rather than taken for granted.
In this lesson you will learn what parent material is and how the three agents of weathering, physical, chemical and biological, attack it to release the mineral grains that form the skeleton of soil. You will see how plants, animals and humus then turn weathered rock into a living topsoil, and you will be able to explain soil formation in the clear, ordered way that the 0600 exam rewards.
Ebumnobi
- (a) explain soil formation from parent material by physical, chemical and biological agents of weathering.
Nkuzi Olu
Gee ntị na nkuzi a na ngwa
Maapụ uche
E seela isiokwu a ka ị hụ otu echiche si ejikọta.
Mepee maapụ uche na ngwa
Kaadị ncheta
Omume ncheta ngwa ngwa n'ihe a na-anwale n'isiokwu a.
Mee omume kaadị ndị a na ngwa
Akwụkwọ Ọmụmụ
Ndetu Nkuzi Zuru Ezu di na Ngwa Green Bridge
Nweta ngwa Green Bridge CBT na ekwenti gi ma o bu kompiuta maka ulo akwukwo IGCSE zuru oke: akwukwo ule ndi gara aga, usoro nyocha, eserese uche, kaadi omumu na nkuzi olu.
Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na Soil Formation. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- The rock from which the mineral part of a soil is formed is called the: A. Humus B. Parent material C. Subsoil D. Topsoil Answer: B
- Which of these is an example of physical weathering? A. Acid rain dissolving limestone B. Roots producing acids C. Freeze-thaw splitting rock D. Bacteria releasing nutrients Answer: C
- Chemical weathering of rock is caused mainly by: A. Wind-blown grains rubbing the surface B. Weak acids and oxygen reacting with minerals C. Earthworms mixing fragments D. Heating and cooling of the surface Answer: B
- Dark, decayed organic matter that makes topsoil fertile is called: A. Clay B. Silt C. Humus D. Bedrock Answer: C
- Breaking rock into smaller pieces speeds up weathering mainly because it: A. Increases the surface area exposed to air and water B. Adds nutrients to the rock C. Removes humus from the soil D. Lowers the temperature of the rock Answer: A
Rue ajuju ndi a n'ime ngwa ahu
Rue ajuju ndi a n'ime ngwa ahu
Akwụkwọ A Na-atụ Aro
Mụtakwuo ihe site na isi mmalite mepere emepe
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Akụkụ akwụkwọ
The Soil
Describe how soils are formed
"Biology: The Soil" by OpenStax, OpenStax, Rice University, licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source: https://openstax.org/books/biology/pages/31-2-the-soil. Access for free at https://openstax.org/books/biology/pages/1-introduction
Ndị otu ndị ọzọ bipụtara ha n'okpuru ikike mepere emepe, anyị na-ekele ha dị ka ha si chọọ. Njikọ na-emepe saịtị ha.
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Soil Formation? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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Ihe nile ichoro iji nwee ihe ịga nke ọma na JAMB, WAEC & NECO.
