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Aardrykskunde

Graad 4

Voedselproduksie

Module 25

Die visbedryf

As jy na die kaarte van Suid-Afrika kyk, sien jy dat ons land aan drie kante met see omring is. Suid-Afrika het ‘n baie lang kuslyn, van Alexanderbaai in die noordweste tot by Kosibaai aan die noordoostelike kus van Kwazulu-Natal. Baie mense in Suid-Afrika maak dan ook ‘n bestaan uit visvangs.

VISVANGGEBIEDE IN Suid-Afrika

  • Groter visse soos snoek en kabeljou word met handlyne van bote af gevang, terwyl ander diepseesoorte soos sardyne en stokvis met nette wat agter die bote gesleep word, gevang word.
  • Die see is ‘n baie groot bron van voedsel en byna 30 000 mense maak jaarlik ‘n bestaan uit die visbedryf van Suid-Afrika. Baie mense beoefen ook vissery as sport. Behalwe vir die seewatervisse is daar ook kleiner hoeveelhede vars visse wat daagliks in heerlike geregte op ons tafels verskyn.

Kan jy drie redes in hierdie twee paragrawe vind waarom die visbedryf belangrik is vir ons land?

Aktiwiteit 1

Om soveel voorbeelde moontlik in die volgende tabel in te vul [lu 1.2]

Vis as Voedsel
Seewatervisse Varswatervisse
Aktiwiteit 2: Om ‘n vloeidiagram oor die prosesse in die produksie van vis te voltooi [LU 1.1]
  • Bestudeer die volgende sketse en voltooi die diagram.

Prosesse in die produksie van vis

(vloeidiagram)

Assessering

Leeruitkoms 1: aardrykskundige ondersoek

Die leerder is in staat om ondersoekvaardighede te gebruik om aardrykskundige en omgewingsbegrippe en -prosesse te ondersoek.

Assesseringstandaard

Dis duidelik wanneer die leerder

1.1 inligting uit verskillende bronne identifiseer (kaarte) [vind bronne];

1.2 inligting uit bronne onder hofies organiseer.

Memorandum

Die prosesse in die produksie van vis

  • Vis word gevang deur verskillende metodes bv. treknette; handlyne.
  • Vis word geweeg, skoongemaak en verkoop.
  • Vis word na fabrieke (industrieë) vervoer waar dit verwerk word.
  • Vis word verwerk tot produkte soos visolie; viskoekies; visvingers; vars vis vir bak of braai.

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, Aardrykskunde graad 4. OpenStax CNX. Oct 21, 2009 Download for free at http://cnx.org/content/col11083/1.2
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