Mchanga Dar na miji mingine ya pwani umetoka wapi?

Mchanga Dar na miji mingine ya pwani umetoka wapi?

Sandali Ali said:
Mchanga upi?
Huu tunaojengea unatoka machimbo ambazo kwa wingi wake ziko mkoa wa Pwani.
Kuhusu mchanga mwingine ambao upo mitaani ni nature ya ardhi ya mkoa huu.
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Hii ardhi ya kichanga ipo karibu ukanda wote wanaolima minazi. Hivyo utaona mkoa wa pwani wote hadi Moro kuna ardhi ya kichanga. Na huu mchanga unafanana kwa rangi na ule wa baharini. Bahari imewahi fika huko? Kama haijawahi, mchanga ule umetokea wapi?
 
Unamaanisha mchanga mweupe? Unaofanana na ule wa fukweni?

Mikoa ya Pwani Ina ardhi zinazofanana..ndio maana hata ukienda Chamazi,Mbande,Chanika n.k unaweza kuta eneoblina mchanga mweupe Kama ule wa ufukweni
 
Elimu ya Tanzania ni ya kukariri na usikute mtu Kama huyu amemaliza form four kaenda form six na kafika chuo kikuu

Kwa kukusaidia mtoa mada na watu wengine mchanga kama ulisoma soil form three kwenye physical geography utaelewa mchanga umetokana na miamba

Mchanga wa dar umetokana na miamba iliyoko eneo la dar hili ni SoMo la form three
 
Sand is a result of the breakdown of Earth’s crust. Sand is formed over a long period of time by water, wind, gravity, and tectonics, among other forces. Water provides movement of sediment from the beginning of streams and inland areas down through the land. As sediment is transported it becomes more worn. While heavier sediment settles along river banks and streams, lighter sediment gets carried to the ocean. Gravity assists the motion of material down streams, rivers, and cliff sides. The smashing of rocks together causes fragmentation of rocks. Like gravity, wind contributes to the movement of materials in powering waves, currents, and the eroding of surfaces. Fine sand is also transported to various locations by the wind. Plate tectonics work together with gravity and water to push rocks upward and then wear them down. These are some common causes that construct sand but depending on location others may exists, such as animal involvement.

These forces cause decomposition of the Earth’s crust to make fine sediment we refer to as sand. Depending on where you are located sand can look different. Different region’s sands are composed of various materials. California for example has many beaches composed of quartz grains. Quartz grains are minerals found in many different kinds of sedimentary rocks and igneous rocks found in Earth’s crust. Once the sedimentary and igneous rock is weathered away, quartz grains are what remains due to ability to resist weathering. Other locations such as the Hawaiian Islands have beaches that are composed of parrotfish poop. Parrotfish consume coral when biting and scraping algae off dead coral, this coral is then passed through their intestines and excreted. Other beaches in New Zealand are referred to as black sand beaches because of their black color which is a result of being composed of volcanic lava fragments. Yet others are made entirely of shells like those in West Australia. Thus, every beach with its abundant sand always has a story of how it came to be formed.
 
simplemind said:
Sand is a result of the breakdown of Earth’s crust. Sand is formed over a long period of time by water, wind, gravity, and tectonics, among other forces. Water provides movement of sediment from the beginning of streams and inland areas down through the land. As sediment is transported it becomes more worn. While heavier sediment settles along river banks and streams, lighter sediment gets carried to the ocean. Gravity assists the motion of material down streams, rivers, and cliff sides. The smashing of rocks together causes fragmentation of rocks. Like gravity, wind contributes to the movement of materials in powering waves, currents, and the eroding of surfaces. Fine sand is also transported to various locations by the wind. Plate tectonics work together with gravity and water to push rocks upward and then wear them down. These are some common causes that construct sand but depending on location others may exists, such as animal involvement.

These forces cause decomposition of the Earth’s crust to make fine sediment we refer to as sand. Depending on where you are located sand can look different. Different region’s sands are composed of various materials. California for example has many beaches composed of quartz grains. Quartz grains are minerals found in many different kinds of sedimentary rocks and igneous rocks found in Earth’s crust. Once the sedimentary and igneous rock is weathered away, quartz grains are what remains due to ability to resist weathering. Other locations such as the Hawaiian Islands have beaches that are composed of parrotfish poop. Parrotfish consume coral when biting and scraping algae off dead coral, this coral is then passed through their intestines and excreted. Other beaches in New Zealand are referred to as black sand beaches because of their black color which is a result of being composed of volcanic lava fragments. Yet others are made entirely of shells like those in West Australia. Thus, every beach with its abundant sand always has a story of how it came to be formed.
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Shukrani mkuu. Sasa hili linaeleza vizuri mchanga kuwepo baharini na mitoni au kwenye maziwa. Ma kwenye pwani za bahari na maziwa. Lakini halisemi mchanga unafikaje sehemu kama kibaha, au kwa Dar, makumi ya kilomita ambako hakuna maji wala upepo wa kusema utavunjavunja miamba. Mchanga umekuwaje kuwako huko?
 
Red Giant said:
Shukrani mkuu. Sasa hili linaeleza vizuri mchanga kuwepo baharini na mitoni au kwenye maziwa. Ma kwenye pwani za bahari na maziwa. Lakini halisemi mchanga unafikaje sehemu kama kibaha, au kwa Dar, makumi ya kilomita ambako hakuna maji wala upepo wa kusema utavunjavunja miamba. Mchanga umekuwaje kuwako huko?
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Mchanga unatokana na miamba na kila sehemu Kuna miamba,
Na rangi ya mchanga inaakisi rangi ya miamba ya sehemu husika
 
Mwanzo 1:9 "Mungu akasema, Maji yaliyo chini ya mbingu na yakusanyike mahali pamoja, ili pakavu paonekane ikawa hivyo."

Kwa mstari huu ni dhahiri kwamba dunia yote hapo mwanzo ilifunikwa na maji.
 
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