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Aardrykskunde

Graad 5

Klimaat- en plantegroeistreke van suid-afrika

Module 12

Die klimaat van suid-afrika: temperatuur

1. Die bou van Suid-Afrika

  • Omdat die reliëf van ‘n land ‘n groot invloed uitoefen op die klimaat van daardie land, is dit nodig om weer kortliks hierna te verwys. Vir meer inligting kan julle teruggaan na die module oor Suid-Afrika se fisiese struktuur.
  • As enige natuurkundige kaart in ‘n atlas bestudeer word, sal dit duidelik word dat ons land op verskillende hoogtes bo seevlak lê. ‘n Dwarsprofiel van die RSA se bou lyk na iets soos ‘n omgekeerde piering.

‘n Dwarsprofiel van die RSA

  • Die grootste gedeelte van Suid-Afrika lê dus hoog bo seespieël. Aan die Ooskus vloei daar ‘n warm seestroom, terwyl daar aan die Weskus ‘n koue seestroom is. Die hoë berge langs die kus sluit die binnelandse plato af. Hierdie faktore het almal ‘n groot uitwerking op die land se klimaat.

2. Faktore wat Suid-Afrika se klimaat beïnvloed

T emperatuur

Suid-Afrika toon tipiese temperatuurpatrone in die verskillende seisoene. So beplan min mense ‘n seevakansie aan die weskus gedurende die winter, terwyl Durban weer regte vakansietemperature gedurende die winter ondervind.

Wintertemperature

Somertemperature

Die temperatuur van Suid-Afrika word deur die volgende faktore beïnvloed:

Breedtegraadligging

Hoe verder ‘n streek van die ewenaar (0°B) geleë is, hoe kouer is dit daar. Plekke wat in die trope (rondom ewenaar) geleë is, ondervind dus warmer temperature as plekke by die pole.

Hoogte bo seevlak

Hoe hoër jy bo seevlak gaan, hoe kouer word dit. Die temperatuur daal dus met ‘n toename in hoogte. Omdat die RSA se binnelandse plato hoog bo seevlak geleë is, sal dit dus daar kouer wees as in die dele wat langs laer kusgebiede geleë is. Ryp kom dus algemeen op die binnelandse plato voor en sneeu op die hoë berge.

Seestrome

Die warm Mosambiekseestroom vloei suidweswaarts langs die RSA se ooskus en die koue Benguelastroom noordwaarts lang die weskus. Lug bokant ‘n koue seestroom is ook koud en die kanse op reënval is min. Bokant ‘n warm seestroom is die lug warm; dit styg, kondenseer en wolke en reën kom dan voor.

Afstand vanaf die see

Die see het ‘n matigende invloed op die klimaat van ‘n plek. Dit beteken dat streke wat naby die see geleë is, nie te warm in die somer en nie te koud gedurende die winter is nie. Daar is dus ‘n klein temperatuurspeling (verskil tussen die hoogste en laagste temperatuur). Die rede hiervoor is dat watermassas nie so vinnig deur insolasie verhit word soos die grondoppervlakte nie. As water egter eers hitte opgeneem het, behou dit sy hitte langer as die grondoppervlaktes. In die dag is uitstraling (radiasie) van hitte vanaf die grond dus hoog, maar laag gedurende die nag. Hoë dagtemperature en lae nagtemperature ontstaan sodoende. Gebruik nou hierdie inligting om die volgende aktiwiteite uit te voer.

Aktiwiteit 1:

Om die lyngrafieke en statistieke te bestudeer

[lu 1.1; 1.7]

Bestudeer die lyngrafieke en statistiek en beantwoord die vrae.

Verduidelik waarom Kimberley se maksimum en minimum temperature baie meer verskil as dié van Port Nolloth en Durban.

Waarom is Durban se temperatuur hoër as dié van Port Nolloth? Gebruik jou atlas om die plekke te vind, indien jy twyfel.

Aktiwiteit 2:

Om 'n lyngrafiek van temperatuursyfers te teken

[lu 1.7]

Bestudeer die volgende temperatuursyfers van Bloemfontein en Kaapstad. Soek die ligging van die dorpe in ‘n atlas op as jy nie weet waar hulle geleë is nie. Onthou om byskrifte en opskrifte te gee.

Maande Jan Feb Mrt Apr Mei Jun Jul Aug Sept Okt Nov Des
Bloemfontein24°S; 1 400 mbo seespieël 23 22 20 16 11 9 8 11 15 18 20 22
Kaapstad34°S; seevlak 22 22 20 18 15 14 13 14 15 17 19 20

Dui vir elke plek in die boonste tabel op die volgende aan:

  • die hoogste maandelikse temperatuur;
  • die laagste maandelikse temperatuur;
  • die temperatuurspeling (verskil tussen hoogste en laagste temperatuur);
  • die gemiddelde temperatuur.

Verduidelik die verskil in temperatuur van die volgende plekke deur na die faktore te verwys wat die klimaat van Suid-Afrika beïnvloed.

  • Port Nolloth en Bloemfontein;
  • Bloemfontein en Kaapstad.

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;

1.2 tussen feite en menings onderskei [werk met bronne];

  • inligting kategoriseer;
  • sketskaarte en/of planne na aanleiding van veldwaarnemings en afmetings teken [werk met bronne];
  • deur projekte, bespreking, debat en diagramme, kennis en begrip van die vraagstuk toon [dra die antwoord oor].

Memorandum

AKTIWITEIT 1

  • Binneland – ver van gematigde invloed van see
  • Op plato – lae wintertemperatuur
  • Warm seestroom

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
hello
Sherica
im all ears I need to learn
Sherica
right! what he said ⤴⤴⤴
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
kkk nice
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
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
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
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, 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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