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Aardrykskunde

Graad 5

Hulpbronne

Module 18

Natuurlike hulpbronne: minerale

Minerale as natuurlike hulpbron

Suid-Afrika is ryk aan minerale soos goud, yster, steenkool, platinum en diamante. Soos die kaart op die volgende bladsy duidelik aandui, is die minerale van Suid-Afrika in die noordoostelike deel van ons land gekonsentreer. Steenkool en goud maak ‘n baie groot persentasie van ons land se minerale rykdom uit.

Minerale van Suid-Afrika

Sommige van die minerale word op die oppervlak gedelf (diamante), terwyl ander diep onder die grond onder baie gevaarlike omstandighede gemyn word.

Yster, wat ‘n kernkomponent in die vervaardiging van staal is, is weer nie so volop nie. Staal word vervaardig deur ystererts en ander minerale in groot oonde saam te smelt. Plat plate staal word hieruit vervaardig, wat weer later gebruik word om ander produkte te vervaardig. Staal vorm ‘n baie belangrike komponent in die moderne vervaardigingsproses. Dink maar net weer aan die motor waarna ons vroeër in die module verwys het. Sonder staal sal die produksielyn vir motorvoertuie buite produksie wees.

Daar is twee hoofmetodes van mynbou:

oop myne;

tonnelmyne.

Minerale soos yster, koper, asbes en diamante word somtyds in oop myne gedelf. Dit is bloot ‘n groot oop gat in die aarde wat op so ‘n manier gegrawe word dat daar ‘n spiraalpad na die diepste deel van die gat lei. So kan voertuie dan tot op elke vlak van die myn beweeg om erts en materiaal te vervoer na die plek van prosessering.

Wanneer minerale egter baie diep onder die grond gevind word, is dit nodig om ‘n skag in die aarde te maak sodat die mynwerkers by die minerale kan uitkom. ‘n Skagtoring word opgerig en ‘n diep gat word in die grond geboor. Uit hierdie gat word dwarsgange en tonnels deur skaggrawers gegrawe tot by die riwwe met delfstowwe. Hierdie gange en tonnels lê op verskillende vlakke.

Die minerale word met dinamiet losgeskiet en dan uitgegrawe. Die “gruis” word dan op ysterbakke (koekepanne), wat soos ‘n trein op ‘n spoor loop, gelaai en met hysbakke na die oppervlak van die grond gehys waar dit verwerk word en oortollige rots op mynhope gegooi word. Die waterige oorblyfsels gaan na ‘n slykdam .

Aktiwiteit

Om 'n diagram van byskrifte te voorsien

[lu 1.1]

  • Raadpleeg weer die vorige paragrawe en voorsien die dwarssnit van ‘n tonnelmyn van die nodige byskrifte.

Assessering

LU 1

AARDRYKSKUNDIGE ONDERSOEK

Die leerder is in staat om ondersoekvaardighede te gebruik om aardrykskundige en omgewingsbegrippe en -prosesse te ondersoek.

Dit is duidelik wanneer die leerder:

  • bronne met nuttige aardrykskundige inligting kan kies en gebruik;
  • tussen feite en menings onderskei [werk met bronne];
  • inligting kategoriseer;
  • sketskaarte en/of planne na aanleiding van veldwaarnemings en afmetings teken [werk met bronne];

1.6 moontlike oplossings vir probleme identifiseer en ondersoek [beantwoord die vraag];

  • deur projekte, bespreking, debat en diagramme, kennis en begrip van die vraagstuk toon [dra die antwoord oor].

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
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Source:  OpenStax, Sosiale wetenskappe: aardrykskunde graad 5. OpenStax CNX. Sep 22, 2009 Download for free at http://cnx.org/content/col10985/1.2
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