Soil Formation
Muhtasari
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.
Malengo
- (a) explain soil formation from parent material by physical, chemical and biological agents of weathering.
Maelezo ya Somo
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Tathmini ya Somo
Hongera kwa kukamilisha somo la Soil Formation. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.
Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.
Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.
- 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
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Inapatikana kwenye programu ya Green Bridge
Pakua programu ya Green Bridge CBT kwenye simu yako au kompyuta yako ili kupata maelezo kamili ya masomo, maswali ya mazoezi, na mengi zaidi.
Vitabu Vinavyopendekezwa
Fanya Mazoezi ya Maswali ya Majaribio
Ungependa kufanya mazoezi ya maswali ya majaribio kuhusu Soil Formation? Pakua programu ya Green Bridge CBT ili kupata maswali ya majaribio na tathmini kamili za mazoezi kuhusu mada hii.
Pakua Programu Kwenye Google Playstore
Kila kitu unachohitaji ili kufaulu katika JAMB, WAEC & NECO.
