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Tegnologie

Graad 5

Tekstiele van toeka tot nou

Module 12

Ontdek tekstielstof

Agtergrond

Van die vroegste tye gedurende die Steentydperk (± 12 000 v.C.) het die eerste mense reeds klere gedra om hulle teen die natuurelemente soos hitte en koue te beskerm. Die oermense het klere van dierevelle en dele van plante gemaak, dit wil sê, dinge wat hulle uit hul natuurlike omgewing kon verkry en gebruik. Diervelle is met senings en beennaalde aanmekaar gelas om eenvoudige kledingstukke te verkry. Sade, vere en doppe is in senings geryg om as versiering te dien.

Opdrag 1

[LU 3.1]

Hier is ‘n skets van Shaka, die Zoeloe-koning wat in 1825 geleef het. Raadpleeg ‘n betroubare bron en beskryf die tradisionele kleredrag van ‘n Zoeloe-kryger en waarvan elke deel van sy uitrusting gemaak is.

Opdrag 2

[LU 3.2]

Sal jy vandag ‘n baadjie dra wat van die vel van ‘n luiperd gemaak is? Skryf redes neer vir jou antwoord.

Agtergrond

Soos die tegnologie ontwikkel het, is baie ander vesels en materiale gebruik om tekstielstof van te maak. tekstielstof word van die vesels van diere (sy, wol) of plante (linne, katoen) gemaak en word gebruik om bedekkings en versierings soos klere, matte, komberse, gordyne, ens. te maak. so het die antieke egiptenare gedurende die bronstydperk (3000 v.c.) begin om die eerste lap te weef. vandag word tekstielstof van stowwe wat uit die natuur (plante of diere) verkry word, gemaak of van stowwe wat deur die mens gemaak is (verkry van hout, olie en steenkool). dus kry ons natuurlike en mensgemaakte (sintetiese) tekstielstowwe. die eerste tekstielstowwe van plastiek (rayon, poliëster, nylon, viskose) is rondom 1850 in engeland vervaardig. plastiek word in fabrieke van olie of steenkool gemaak deurdat die chemikalieë in die stowwe onttrek word en na plastiek verander word.

Opdrag 3

Sorteer elk van die volgende voorwerpe onder natuurlike of mensgemaakte stowwe (‘n plastieksak, ‘n baadjie van pels, ‘n houtbak, ‘n glasbottel, ‘n polistireenhouer, ‘n houttafel). Gebruik die volgende opskrifte:

NATUURLIKE STOWWE MENSGEMAAKTE STOWWE

[LU 3.1]

Agtergrond

Die voordele van plastiek:

  • Dit is goedkoop om te vervaardig.
  • Dit kan verwerk word in baie verskillende vorme.
  • Dit is maklik kleurbaar.
  • Dit is baie sterk.
  • Dit hou baie lank.

Die nadele van plastiek:

  • Dit is moeilik herwinbaar.

Natuurlike stowwe

Natuurlike stowwe kan dierlik of plantaardig wees. voorbeelde van diere wat stowwe verskaf, is skape, bokke, hase, kamele, sywurms, lamas, konyne en perde. plantaardige stowwe word weer verkry van die bas, blare, sade en vrugte van sekere plante soos klapper van klapperdoppe, katoen, sisal en vlas.

Wol word van skape verkry deurdat die skape eenkeer ‘n jaar geskeer word. Een skaap lewer ongeveer 4 kg wol per jaar. Daar is verskillende skaaprasse wat verskillende soorte wol verskaf. Die wol van die merino-ras is die fynste en van die beste gehalte. Die merino-ras word veral in Australië en Suid-Afrika geteel omdat hulle baie goed aard in ‘n warm, droë klimaat. Australië is een van die bekendste wolproduserende lande in die wêreld.

Questions & Answers

the diagram of the digestive system
Assiatu Reply
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Ogenrwot
How does twins formed
William Reply
They formed in two ways first when one sperm and one egg are splited by mitosis or two sperm and two eggs join together
Oluwatobi
what is genetics
Josephine Reply
Genetics is the study of heredity
Misack
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Misack
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Hassan Reply
discuss biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles
Joseph Reply
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Yousuf Reply
the study of living organisms and their interactions with one another and their environments
AI-Robot
the study of living organisms and their interactions with one another and their environment.
Wine
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Joseph Reply
what is the blood cells
Shaker Reply
list any five characteristics of the blood cells
Shaker
lack electricity and its more savely than electronic microscope because its naturally by using of light
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advantage of electronic microscope is easily and clearly while disadvantage is dangerous because its electronic. advantage of light microscope is savely and naturally by sun while disadvantage is not easily,means its not sharp and not clear
Abdullahi
cell theory state that every organisms composed of one or more cell,cell is the basic unit of life
Abdullahi
is like gone fail us
DENG
cells is the basic structure and functions of all living things
Ramadan
What is classification
ISCONT Reply
is organisms that are similar into groups called tara
Yamosa
in what situation (s) would be the use of a scanning electron microscope be ideal and why?
Kenna Reply
A scanning electron microscope (SEM) is ideal for situations requiring high-resolution imaging of surfaces. It is commonly used in materials science, biology, and geology to examine the topography and composition of samples at a nanoscale level. SEM is particularly useful for studying fine details,
Hilary
cell is the building block of life.
Condoleezza Reply
what is cell divisoin?
Aron Reply
Diversity of living thing
ISCONT
what is cell division
Aron Reply
Cell division is the process by which a single cell divides into two or more daughter cells. It is a fundamental process in all living organisms and is essential for growth, development, and reproduction. Cell division can occur through either mitosis or meiosis.
AI-Robot
What is life?
Allison Reply
life is defined as any system capable of performing functions such as eating, metabolizing,excreting,breathing,moving,Growing,reproducing,and responding to external stimuli.
Mohamed
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Source:  OpenStax, Tegnologie graad 5. OpenStax CNX. Sep 23, 2009 Download for free at http://cnx.org/content/col10978/1.2
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