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Tegnologie

Graad 8

Strukture

Module 17

Ons land- ‘n vullishoop

Ons land – ‘n Vullishoop?

In ‘n tipiese Suid-Afrikaanse huishouding neem die huisbewoners sakke vol afval na die vullisdrom wat deur munisipale werkers in groot vragwaens weggery word. Is dit die einde van die storie?

Namate die Suid-Afrikaanse bevolking groei, vermeerder die berge huishoudelike afval wat daagliks gegenereer word. Die gevolg is dat daar so baie afval is dat die munisipale opvulterreine dit nie kan hanteer nie. Gelukkig is daar mense wat besorg is oor wat van die afval word en waarheen dit in die toekoms geneem sal word.

Herwinning is nie die enigste oplossing vir die afvalprobleem nie, maar dit is tog iets wat almal kan doen om te help om ‘n beter wêreld vir ons almal te skep. Herwinning het te make met die hergebruik van huishoudelike en nywerheidsafval soos plastiek-en papierprodukte. Dit help nie net om afval te verminder nie, maar dit voorkom ook dat ons ons hulpbronne uitput. Daarby bekamp herwinning ook die besoedeling wat veroorsaak word wanneer hierdie hulpbronne verwerk word. Baie mense in Suid-Afrika verdien geld deurdat hulle herwinbare materiale soos papier, glas, plastiek en metaal bymekaarmaak en verkoop. Ander mense plaas weer hulle herwinbare afval in groot houers vanwaar dit vir herwinning geneem word. Dit maak nie saak hoe ‘n mens tot die proses van afvalherwinning bydra nie, solank jy net iets doen om dit te bevorder. Onthou: Dit is goed vir die omgewing.

Aktiwiteit 1:

Om kennis en begrip van herwinning en die roete wat met afval gevolg word, te demonstreer.

[lu 1.1]

1.1 Definieer die term “herwinning”.

1.2 Teken ‘n verloopkaart ( “flow chart”) op ‘n vel papier om aan te toon wat gewoonlik met plastiek, glas, papier en metaalafval gebeur vanaf die punt waar dit die winkel verlaat tot dit by die opvulterrein beland.

1.3 Teken ‘n verloopkaart op ‘n vel papier om aan te dui watter rol afvalhouers speel in ons pogings om ons omgewing te red.

1.4 Teken die herwinningsembleem op ‘n vel papier.

1.5 Skryf ‘n paragraaf oor Redes vir herwinning.

Aktiwiteit 2:

Om toetse uit te voer om vas te stel watter materiale en hoeveel afval tuis gegenereer word, sodat jy ‘n mening kan vorm oor die uitwerking wat tegnologieprodukte het op die gehalte van mense se lewens en op die omgewing waarin hulle woon.

[lu 3.2]

  • Neem drie leë kartondose en merk hulle PAPIER, METAAL (BLIKKE) en PLASTIEK. Versamel en weeg julle herwinbare huishoudelike afval vir ‘n week lank en plaas dit in hierdie kartondose. Weeg elke dag se afval en teken die gewig aan in die onderstaande tabel. Plaas die afval in drie verskillende sakke nadat jy dit geweeg het en plaas die sakke dan in massa-afvalhouers in jou dorp.

Tabel 1

Huishoudelike herwinningsdata

Herwinbareafval Son Maan Dins Woens Don Vry Sat Totaal
Metaal (kg)
Papier (kg)
Plastiek (kg)

Kombineer die data van al die leerders in jou klas en bereken hoeveel kilogram die klas altesaam versamel het. Jy kan nou in tabel 2 bereken wat die totale waarde is van die afval wat jou klas versamel het.

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, Tegnologie graad 8. OpenStax CNX. Sep 13, 2009 Download for free at http://cnx.org/content/col11051/1.1
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