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Sosiale wetenskappe: geskiedenis

Graad 8

Grond en mag

Module 6

Die industriële rewolusie : landbou

Die Industriële Revolusie: Landbou

Op die verbetering in vervoer en paaie, het verstedeliking, toename in bevolking en ‘n styging in die lewenstandaard van die mense gevolg. Om meer en beter voedsel te voorsien aan die groeiende bevolking, was ‘n uitdaging vir die landboubedryf.

Robert Bakewell het in Dishley, in die streek Leicester, met skape en beeste geboer. Hy het besef dat vleisproduksie net voldoende sou wees indien die hoeveelheid en die kwaliteit daarvan kon verbeter. Die diere moes gouer markgereed wees en slegs tevrede kopers verseker die beste markpryse. Die gewildste wolskape was op hierdie stadium maer, langbeenskape wat met min kos kon klaarkom.

Bakewell het na eksperimentering ‘n skaap met ‘n groot karkas en baie goeie vleis geteel, wat binne twee jaar markgereed was. Hierdie ras, bekend as die Nuwe Leicesters was dus dubbel so winsgewend as die vorige skaapras wat eers na drie of vier jaar markgereed was. Bakewell was een van die eerste boere wat die waarde van wetenskaplike en gekontroleerde besproeiing van gewasse besef het. Hierdie navorsing was noodsaaklik omdat vleisproduksie nou belangriker geraak het as handel met wol of skaapvelle. Bakewell se eksperimentering met skaaprasse het dus gelei tot navorsing in dierevoer. Ook in beesteling het hy gekonsentreer op eienskappe soos kwaliteit (gehalte) en kwantiteit (hoeveelheid) ten opsigte van vleisproduksie. Sy eksperimentering is nog verder uitgebrei tot ‘n kleiner karperd wat nuttiger was as die groter diere.

  • Kyk na die volgende DIAGRAM van vleisproduksie te koop aangebied by die Smithfield-mark.
1710 1795
Skape 12 kg 35 kg
Beeste 150 kg 360 kg
  • Bestudeer die diagram op die vorige bladsy en antwoord dan die volgende vrae:

1. Het die skaapvleisproduksie vermeerder? Bewys jou antwoord.

2. Het die skaapvleisproduksie meer toegeneem as die beesvleisproduksie?

Bewys jou antwoord.

3. Kan jy van hierdie diagraminligting aflei dat die Britte meer van beesvleis as van skaapvleis gehou het? Verstrek minstens EEN rede vir jou antwoord.

LU 1 AS 1.3

Hoe lyk wetenskaplike navorsing en eksperimentering in die landbou vandag?

Wat is kloning?

  • Dit is ‘n produk van biotegnologie, waardeur selle of ‘n hele dier vervaardig word deur DNA van een ouerdier te gebruik, sonder dat die gewone normale geboorte- en/of groeiproses gevolg word. Die kloon het dan dieselfde DNA as die ouer.

Is kloning onnatuurlik?

  • Nee, klone word dikwels op natuurlike manier geproduseer as identiese tweelinge.

Werk die kloningsproses elke keer?

  • Nee, die skaap Dolly was die eerste geslaagde soogdierreproduksie. Dolly is gemaak van ‘n normale volwasse sel, in hierdie geval uit die uier van ‘n ooi. Meer as 200 pogings om Dolly te maak het misluk .

Is klone normale, gesonde diere?

  • Bokke, skape, koeie en muise is reeds gekloon. Dolly blyk gesond te wees, maar wetenskaplikes vermoed dat gesondheidsprobleme en vroeë veroudering by die klone kan voorkom.

Waar kry ‘n mens meer inligting oor die nuutste tegnologie?

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
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Source:  OpenStax, Geskiedenis graad 8. OpenStax CNX. Sep 12, 2009 Download for free at http://cnx.org/content/col11043/1.1
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