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Aardrykskunde

Graad 4

Hulpbronne en dienste in ‘n nedersetting

Module 14

Water in ons huise

Water as hulpbron

Sonder water is lewe op aarde nie moontlik nie. Water is ook die bestanddeel wat die meeste op die aarde voorkom – dit bedek ongeveer 80 % van ons planeet se oppervlakte. Van hierdie 80 % is slegs 3 % varswater, en die meeste van hierdie varswater kom voor in ysvorm, naamlik in die ysvelde by die Noord- en Suidpool.

‘n paar interessante feite:

  • Tussen 60% en 70% van jou liggaam bestaan uit water.
  • 85% van jou brein is water.
  • 25% van jou gebeente is water.
  • 83% van jou bloed is water.
  • ‘n Mens kan langer as twee weke sonder kos oorleef, maar slegs drie dae sonder water.
  • ‘n Mens verloor gemiddeld 2,5 liter water per dag weens sweet, uitaseming en afval.

1.water in ons huise

Noudat julle kennis gemaak het met al die interessante gegewens oor die mens en water, is julle oortuig daarvan dat water die heel belangrikste hulpbron is? Hou gerus ‘n klasbespreking daaroor.

Waarvoor het julle gesin water nodig? gesels met jou maat daaroor en vul die lysie in die blok hieronder met julle eie antwoorde aan.

Aktiwiteit 1

Om oor die gebruike van water in en om die huis te gesels [lu 2.2]

Water vir ons huisgesin

  1. Ons drink almal water.

2. Mamma gebruik dit as sy kos kook.

3. ................................................................................................................

4. ................................................................................................................

5. ................................................................................................................

6. ................................................................................................................

7. ................................................................................................................

8 ...............................................................................................................

2.waar kom julle water vandaan?

Wanneer dit reën, vloei die water in riviere en strome en uiteindelik beland dit in groot damme wat in die riviere gebou is. Dit word opgaardamme genoem. Van die opgaardamme word dit met groot pype na waterwerke vervoer waar die nodige suiwering van die water plaasvind. Hierna word dit met kleiner pypleidings na die dorpe en stede en uiteindelik ons eie huise vervoer. Vind uit watter opgaardam(-me) naaste aan julle is. Skryf die dam(-me) se naam/name hier neer:

Aktiwiteit 2

Om die faktore te identifiseer wat veroorsaak dat sommige mense beter toegang tot skoon water het as ander [lu3.2]

3.toegang tot water

  • Ons regering bestee baie geld om vir al die mense in ons land skoon water vir drink- en huishoudelike gebruik te voorsien. Die ideaal is dat elke huishouding lopende water wat skoon en veilig is, in die huis moet hê.
  • Daar is egter nog baie mense wat ver moet loop om hulle water in houers te gaan haal en huis toe te dra. Dikwels skep hulle die water uit riviere wat besoedel word deur mense, diere en fabrieke. Die besoedelde water veroorsaak siektes waaraan mense kan sterf.
  • Informele nedersettings ontstaan en groei soms so vinnig dat plaaslike regerings nie betyds lopende water kan aanlê nie. Die mense bou hulle skuilings naby oop waterbronne soos riviere. Almal gebruik dan dieselfde bron. Mense skep hulle drinkwater daaruit, maar was ook hulself en hulle wasgoed daarin. Kinders speel of swem daarin en diere mors daarin. Daar word ook dikwels afvalwater uit fabrieke in die riviere gestort.

Assessering

Leeruitkoms 2: aardrykskundige kennis en begrip

Die leerder is in staat om aardrykskundige en omgewingskennis en -begrip te toon.

Assesseringstandaard

Dis duidelik wanneer die leerder

2.2 die belangrikheid beskryf van toegang tot hulpbronne en dienste.

Leeruitkoms 3: verkenning van vraagstukke

Die leerder is in staat om ingeligte besluite oor sosiale en omgewingsvraagstukke en –probleme te neem.

Assesseringstandaard

Dis duidelik wanneer die leerder

3.2 faktore identifiseer wat veroorsaak dat sommige mense in ‘n spesifieke konteks groter toegang tot hulpbronne het as ander.

Memorandum

Die gebruike van water in en om die huis

  1. Reiniging
  2. Tuin
  3. Swembad

Questions & Answers

can someone help me with some logarithmic and exponential equations.
Jeffrey Reply
sure. what is your question?
ninjadapaul
20/(×-6^2)
Salomon
okay, so you have 6 raised to the power of 2. what is that part of your answer
ninjadapaul
I don't understand what the A with approx sign and the boxed x mean
ninjadapaul
it think it's written 20/(X-6)^2 so it's 20 divided by X-6 squared
Salomon
I'm not sure why it wrote it the other way
Salomon
I got X =-6
Salomon
ok. so take the square root of both sides, now you have plus or minus the square root of 20= x-6
ninjadapaul
oops. ignore that.
ninjadapaul
so you not have an equal sign anywhere in the original equation?
ninjadapaul
Commplementary angles
Idrissa Reply
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Sherica
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Sherica
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Tamia
what is a good calculator for all algebra; would a Casio fx 260 work with all algebra equations? please name the cheapest, thanks.
Kevin Reply
a perfect square v²+2v+_
Dearan Reply
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Abdirahman Reply
algebra 2 Inequalities:If equation 2 = 0 it is an open set?
Kim Reply
or infinite solutions?
Kim
The answer is neither. The function, 2 = 0 cannot exist. Hence, the function is undefined.
Al
y=10×
Embra Reply
if |A| not equal to 0 and order of A is n prove that adj (adj A = |A|
Nancy Reply
rolling four fair dice and getting an even number an all four dice
ramon Reply
Kristine 2*2*2=8
Bridget Reply
Differences Between Laspeyres and Paasche Indices
Emedobi Reply
No. 7x -4y is simplified from 4x + (3y + 3x) -7y
Mary Reply
is it 3×y ?
Joan Reply
J, combine like terms 7x-4y
Bridget Reply
im not good at math so would this help me
Rachael Reply
yes
Asali
I'm not good at math so would you help me
Samantha
what is the problem that i will help you to self with?
Asali
how do you translate this in Algebraic Expressions
linda Reply
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
Crystal Reply
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
Chris Reply
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Damian Reply
China
Cied
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abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
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Porter
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Yasmin
what is the function of carbon nanotubes?
Cesar
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Ramkumar Reply
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what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
bamidele Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Aardrykskunde graad 4. OpenStax CNX. Oct 21, 2009 Download for free at http://cnx.org/content/col11083/1.2
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