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Geography

Grade 4

Resources and services within a settlement

Module 15

Water supply and water conservation

Water as a resource

Limited supply of water

Water – the smaller the supply of water, the bigger the problem!

To supply water to a city is not an easy task. The location of the first fort at the Cape was determined by the Vars River, because the building had to be erected where water was available. The river (that presently flows beneath Adderley Street in a pipe) is literally “a drop in the ocean” of what the Cape Metropole presently needs. The water for this vast urban area comes from a number of dams in the mountainous regions many kilometres from Cape Town.

To be ensure that water will always be available demands thorough planning – sometimes years ahead! A rapid influx of people will result in the fact that for a certain period there will not be sufficient water for urban use. This is a serious situation because human beings cannot survive without water.

Access to water

Do all South Africans have access to water daily?

Activity 1

To discuss this statement in your groups and propose ways to address the problems [lo 3.2, 3.3]

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……………………………………………………………………………………….

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……………………………………………………………………………………….

……………………………………………………………………………………….

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Polluted water

Activity 2

To study the sketch and make a list of how people pollute fresh water daily [lo 3.1]

……………………………………………………………………………………...

……………………………………………………………………………………...

……………………………………………………………………………………...

……………………………………………………………………………………...

……………………………………………………………………………………...

Yes, even the wrappers of sweets that are carelessly discarded by people in the street, might eventually end up in a dam along with the rainwater, and therefore pollute our drinking water. We already know that only 3% of all water is suitable for drinking, and every time a part of that water is polluted, it must first be purified before we can drink it.

5. Water conservation

Activity 3

To make suggestions how to save water [lo 3.3]

  • What percentage of the water on earth is fresh water and suitable for use by us? (Refer to the first page in module 14).

..............%.

  • It should therefore be clear to you that we must use the water supply sparingly.

G roup work:

“Every drop is precious” is a well-known saying we often see on large posters. The aim is to encourage people to save water.

Suppose your group is the local government and you want to encourage the people of your town or city to save water. Think up a clever slogan to influence the people.

Work on your own. Think carefully and write down at least FIVE ways how to save water. Then discuss it with your partner and select the five best ideas from your contributions. Circle the numbers of your choices. Afterwards you will have the opportunity to read them to the class.

This is how we save water

1. …………………………………………………………………………………

2. …………………………………………………………………………………

3…………………………………………………………………………………..

4. …………………………………………………………………………………

5…………………………………………………………………………………..

Assessment

Learning outcome 3: exploring issues

The learner will be able to make informed decisions about social and environmental issues and problems.

Assessment standard

We know this when the learner:

3.1 identifies issues associated with resources and services in a particular context;

3.2 identifies the factors that influence why some people have better access to resources compared to others in a particular context;

  • suggests ways to improve access to resources in a particular context.

Memorandum

  • Water for washing Chemicals
  • Diesel Sewerage
  • Rubbish Human waste
  • 3%

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
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Geography grade 4. OpenStax CNX. Sep 17, 2009 Download for free at http://cnx.org/content/col11084/1.1
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