<< Chapter < Page Chapter >> Page >

Aktiwiteit 5:

Om navorsing oor verwoestyning te doen en ‘n verslag daaroor te skryf

[lu 1.4, 2.3]

  • Die mens veroorsaak dat woestyngebiede al hoe groter word. Dit word verwoestyning (of woestynvorming) genoem. Gaan doen navorsing hieroor. Skryf dan ‘n verslag van ongeveer een bladsy daaroor. Maak ook voorstelle oor hoe die probleem aangespreek kan word.

TOENDRABIOOM EN YSVELDE

  • Die Toendrabioom kom noord van 65 o N voor, in ‘n breë sone rondom die Noordelike Yssee in Alaska, Kanada, Groenland en Ysland, tot aan die Beringsee in die ooste van Asië. In die Suidelike Halfrond is dit net ‘n klein kolletjie op Vuurland aan die suidpunt van Suid-Amerika wat dit verteenwoordig.
  • Die Toendra verduur uiters koue klimaatstoestande. Gedurende die lang, donker wintermaande daal die temperatuur tot ver onder vriespunt. Sneeustorms en yskoue winde waai aaneen. Dan groei niks nie. Die plante het ‘n lang rusperiode, want die grond is gevries.
  • Gedurende die somer kan die temperatuur tot ± 10 o C styg, maar die somer is maar net 3 – 4 maande lank. Net die boonste grondlagie ontdooi en die gesmelte water kan nie wegsyfer nie. Baie areas word oorstroom en ‘n moerasagtige oppervlakte is die gevolg. Die reënval in die streke is maar ongeveer 250 mm per jaar en die verdampingsyfer is baie laag. Water kry dus nie kans om behoorlik af te loop nie.
  • Die toendraplantegroei moet dus aangepas wees by baie lae temperature en ‘n oormaat water. Plante groei baie vinnig. Hulle word skielik in die somer wakker en groei dan oornag. Mosse, kosmosse, varings, klein bossies, gras en selfs blomme verskyn. Die dierelewe is goed aangepas by die natuur. Rendiere, wolwe en bere is die bekendste voorbeelde.
  • Die area is baie yl bevolk. Die Eskimo’s van Groenland is ‘n voorbeeld van die nomadiese groepe wat hier woon.
  • Die Yswoestyne is die onherbergsame gebiede wat Antarktika (sesde kontinent), groot dele van Groenland, die Noordelike Ysseegebiede en bergtoppe wat altyd met sneeu bedek is, insluit. Hierdie yswoestyne is nie deel van die Toendrabioom nie.
  • Hierdie gebiede is so koud dat byna geen plantegroei voorkom nie. Landdiere is ook byna afwesig, maar seediere soos ysbere, walvisse, robbe en see-olifante is volop. Verskillende voëlsoorte het hul broeikolonies in dié areas.

Aktiwiteit 6:

Om navorsing oor antarktika te doen en dan die klimaat-toestande van yswoestyne te beskryf

[lu 1.5]

Beskryf die klimaattoestande van die yswoestyne nadat jy navorsing oor Antarktika gedoen het.

Assessering

Leeruitkomstes(LUs)
LU 1
AARDRYKSKUNDIGE ONDERSOEKDie leerder is in staat om ondersoekvaardighede te gebruik om aardrykskundige en omgewingsbegrippe en -prosesse te ondersoek.
Assesseringstandaarde(ASe)
Dit is duidelik wanneer die leerder:
1.1 inligtingsbronne , insluitend eenvoudige statistiek, identifiseer om die vraag oor ‘n maatskaplike of omgewingsvraaagstuk of –probleem te help beantwoord;
  • relevante inligting vir spesifieke doeleindes uit bronne kies en dit opteken;
  • breedte- en lengteligging gebruik om relevante plekke op kaarte te vind;
  • inligting gebruik om oplossings vir probleme voor te stel;
1.5 verslag doen oor ondersoeke deur bespreking, debat, gestruktureerde skryfwerk, grafieke, tabelle, kaarte en diagramme.
LU 2
AARDRYKSKUNDIGE KENNIS EN BEGRIPDie leerder is in staat om aardrykskundige en omgewingskennis en -begrip te toon.
Dit is duidelik wanneer die leerder:
  • kan verduidelik waarom meer mense op sommige plekke woon as ander;
  • kan identifiseer hoe toegang tot verskillende soorte hulpbronne ontwikkeling op verskillende plekke beïnvloed;
  • sommige maniere waarop die samelewing die omgewing verander het, beskryf.

Memorandum

Sirkelgrafiek:

  • Woude
  • Gras

Questions & Answers

how can chip be made from sand
Eke Reply
is this allso about nanoscale material
Almas
are nano particles real
Missy Reply
yeah
Joseph
Hello, if I study Physics teacher in bachelor, can I study Nanotechnology in master?
Lale Reply
no can't
Lohitha
where is the latest information on a no technology how can I find it
William
currently
William
where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
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
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
has a lot of application modern world
Kamaluddeen
yes
narayan
what is variations in raman spectra for nanomaterials
Jyoti Reply
ya I also want to know the raman spectra
Bhagvanji
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
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
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get Jobilize Job Search Mobile App in your pocket Now!

Get it on Google Play Download on the App Store Now




Source:  OpenStax, Aardrykskunde graad 6. OpenStax CNX. Sep 07, 2009 Download for free at http://cnx.org/content/col10999/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Aardrykskunde graad 6' conversation and receive update notifications?

Ask