Formation Of Rocks
Gbogbo ọrọ náà
The ground beneath your feet is not as still as it looks. Granite kitchen worktops, the slate on a roof, the limestone in a cathedral and the marble of a statue all began as something else and were made over by heat, pressure, water and time. Geologists group every rock on Earth into just three families, and each family tells the story of how it was born. Learn to read those stories and you can pick up almost any rock and say where it came from.
In this lesson you will see how igneous, sedimentary and metamorphic rocks form, and how the rock cycle links all three so that one rock type can slowly become another. You will also meet permeability, the property that decides whether water soaks through a rock or runs off it. These ideas underpin everything that follows in this unit, from where we mine metals to where groundwater is stored.
Ebumnobi
- 1.1.1 Describe the formation of named igneous, sedimentary and metamorphic rocks, limited to: (a) igneous: granite and basalt (b) sedimentary: limestone, sandstone and shale (c) metamorphic: marble and slate.
- 1.1.2 Describe and interpret the rock cycle, limited to: (a) weathering (b) erosion (c) transportation (d) sedimentation (e) compaction (f) cementation (g) crystallisation (h) deposition.
- 1.1.3 Define permeability as the ability of water to pass through the pore spaces of rock and soil.
- 1.1.4 Classify rocks as permeable and impermeable, limited to: (a) permeable: most sedimentary rocks (limestone and sandstone) (b) impermeable: igneous, metamorphic and some sedimentary rocks (shale).
Nkuzi Olu
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Maapụ uche
E seela isiokwu a ka ị hụ otu echiche si ejikọta.
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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 Formation Of Rocks. 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.
- Which rock type is formed when molten magma cools and solidifies? A. Sedimentary B. Metamorphic C. Igneous D. Fossil Answer: C
- A rock contains visible large crystals and no layers. It most likely formed by: A. Rapid cooling of lava at the surface B. Slow cooling of magma underground C. Compaction of sediment D. Heat and pressure on shale Answer: B
- Which of the following is an impermeable sedimentary rock? A. Limestone B. Sandstone C. Shale D. Granite Answer: C
- Limestone is changed into marble by: A. Weathering and erosion B. Compaction and cementation C. Heat and pressure D. Melting and crystallisation Answer: C
- Permeability is best defined as the ability of: A. A rock to resist scratching B. Water to pass through the pore spaces of a rock C. A rock to contain fossils D. Crystals to form on cooling Answer: B
Rue ajuju ndi a n'ime ngwa ahu
Rue ajuju ndi a n'ime ngwa ahu
Akwụkwọ A Na-atụ Aro
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara Formation Of Rocks? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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