<< Chapter < Page Chapter >> Page >

Social sciences

Geography

Grade 9

Sustainable utilisation of resources

Module 8

The production of waste materials

In South Africa, 42 million cubic metres of waste material is generated in a year. The largest portion of this material is produced in Gauteng. The average amount of waste material produced per person per day in South Africa is 0,7kg. The sector that contributes most to this stream of solid waste is the mining industry. They contribute 72,3% of the solid waste material. After this, fuel contributes 6,7% of the solid waste. Agricultural waste contributes 6,1%, while waste from urban areas amounts to 4,5% of the total. Sewerage amounts to 3,6% of the solid waste.

Such high levels of waste material and pollution are cause for concern. A large amount of the dangerous waste (such as chemical materials) are not treated or disposed of properly. Only 5% of the 5 million cubic metres of chemical waste that is produced eventually reaches the dangerous waste-disposal sites.

Activity:

To identify ways of disposing waste

[lo 2.2]

On your own:

Study the table below and identify the safest methods that can be utilised to dispose of waste materials. Just place mark the correct column with X to indicate your choice:

TYPE OF WASTE REFUSE DUMP REFUSE DUMP SPECIAL FACILITY
Cans and vegetable skins
Sewerage
Industrial acids and poisons
Old oils and lubricants

Assessment

Learning outcomes(LO)

LO 1

GEOGRAPHICAL RESEARCH The learner can apply research skills to study geographical and environmental concepts and processes.

Assessment standards(AS)

This is clear when the learner:

1.3 analyses and makes inferences from sources such as photo’s, maps, atlases, graphs and statistics [working with sources];

1.5 recognises information in the field and records it [working with sources].

LO 2

GEOGRAPHICAL KNOWLEDGE AND UNDERSTANDING The learner can demonstrate geographical and environmental knowledge and understanding.

This is clear when the learner:

2.2 identifies ways in which Science and Technology have a positive and a negative influence on development [people and resources].

Memorandum

ACTIVITY:

ALL : Special dumping site

Questions & Answers

what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
how to synthesize TiO2 nanoparticles by chemical methods
Zubear
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Good
Berger describes sociologists as concerned with
Mueller Reply
Got questions? Join the online conversation and get instant answers!
QuizOver.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Geography grade 9. OpenStax CNX. Sep 14, 2009 Download for free at http://cnx.org/content/col11057/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Geography grade 9' conversation and receive update notifications?

Ask