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Tegnologie

Graad 9

Meganismes en beweging

Module 5

Skroewe

Skroewe

  • Skroewe verskil van spykers omdat dit ’n draad het. Skroefdraad maak van die hellendevlakbeginsel gebruik. Wat is ’n hellende vlak? Dit is bloot ’n oppervlak met ’n helling wat gebruik word om take makliker te maak, soos in die illustrasie hieronder.
  • Skroefdrade word gebruik om kragtige beweging in byvoorbeeld motordomkragte te gee, dinge in plek te hou soos boute en moere, en dinge akkuraat te posisioneer, soos ’n moersleutel. Daar is meer tegniese inligting oor skroewe soos verskillende draadtipes waarvan jy sal leer as jy ’n ingenieur word.

Aktiwiteit 1

Die vrae is op die illustrasie gebaseer.

  1. Noem twee meganismes wat in hierdie toestel gebruik word.

2. Hierdie uitvindsel was in die ou dae baie nuttig. Waarom?

  1. Is daar moderne weergawes van hierdie meganisme? Verduidelik.
  1. Skryf ’n kort paragraaf oor hoe die ontwikkeling van meganismes die afvalbedryf geraak het met betrekking tot die meganiese toerusting wat hulle gebruik. Dink ook aan die uitwerking wat dit op die omgewing het.
LU 3.2

Jou uitdaging

  • Jy het in hierdie module heelwat geleer oor meganismes. Jy het sommige meganismes dalk interessanter gevind as ander. Jy kon dalk ook gevind het dat dit vir jou te tegnies was of dat die berekeninge te moeilik is.
  • Die waarheid is dat almal elke dag meganismes gebruik, of hulle tegnies ingestel is of nie. Almal maak deure oop met die deurknoppe of skakel ligte met hefboomskakelaars aan en verander ratte met ’n ratstang.
  • Hier volg nou twee uitdagings. Gebruik die tegnologiese proses en stel ’n projekportefeulje saam om die probleme op te los. In albei gevalle word slegs ’n scenario gegee, en jy moet jou eie ontwerpopdrag, spesifikasies, idees en finale idee neerskryf, die skaalmodel in scenario 2 bou en evalueer. Jou onderwyser sal jou leiding gee oor die materiaal en gereedskap wat beskikbaar is.

ASSESSERINGSKAAL:

Projekportefeulje LU / AS 2.1 1 2 3 4 5 6 7
Ontwerpopdrag LU / AS 1.5 1 2 3 4 5 6 7
Spesifikasies LU / AS 1.6 1 2 3 4 5 6 7
Idees LU / AS 1.7 1 2 3 4 5 6 7
Finale idee LU / AS 1.8 1 2 3 4 5 6 7
Bou van model LU / AS 1.9 1 2 3 4 5 6 7
LU / AS 1.10 1 2 3 4 5 6 7
LU / AS 1.11 1 2 3 4 5 6 7
LU / AS 1.12 1 2 3 4 5 6 7
Evaluasie LU / AS 1.13 1 2 3 4 5 6 7

Scenario 1

  • Aangesien Tegnologie ’n betreklik nuwe vak op skool is, vind opvoeders dit baie moeilik om meganismes te verduidelik en te demonstreer. Daar is bitter min hulpbronne, voorbeelde en toerusting in Suid-Afrika se onderwysdepartemente beskikbaar. Jy word gevra om enige meganisme en ontwerp te kies en ’n meganiese demonstrasie-instrument te maak, byvoorbeeld ’n meganiese speelding wat ’n opvoeder in die toekoms kan gebruik.

Senario 2

  • Baie mense hou van 4x4-uitstappies. Dit het gelei tot ’n nuwe mark in 4x4-bybehore. Toerusting moet sterk en lig wees en moet kan opvou om so min ruimte as moontlik te beslaan wanneer jy reis. Daar is verskillende tipes toerusting, maar ontwerpers kom steeds met nuwe, briljante idees vir die 4x4-entoesias vorendag. Jy is deel van so ’n ontwerpergroep en evalueer nuwe produkte vir hierdie mark.

Assessering

LU 2
TEGNOLOGIESE KENNIS EN BEGRIP Die leerder is in staat om relevante tegnologiese kennis te verstaan en dit eties en verantwoordelik toe te pas.
Dit is duidelik wanneer die leerder:
strukture:2.1 kennis en begrip toon van strukture:
  • eienskappe van materiaal wat die funksie daarvan in strukture affekteer (bv. massa, hardheid, styfheid, veerkragtigheid, weerstand teen korrosie, sterkte in spanning, samepersing, skuifwerking);
  • ontleding (geen berekeninge nie) van die uitwerking van verskillende laste (gelyke/ongelyke, statiese/dinamiese);
stelsels en beheer:2.3 deur praktiese analise, kennis en begrip van interaktiewe meganiese sisteme en subsisteme demonstreer en sulke sisteme en subsisteme met diagrammatiese sisteemdiagramme voorstel:
  • ratstelsels;
  • band gedrewe of katrolsisteme met meer as een stadium;
  • meganiese beheermeganismes.

Memorandum

AKTIWITEIT 1

1. Skroef en kruk

2. Eerste vorm van pomp. Handbedien, geen elektrisiteit beskikbaar. Riviere was die hoofbron van drinkwater – geen krane in huise.

3. Pompe gebruik in boorgate.

4. Vir hierdie opstel moet die leerders navorsing doen oor hoe meganismes die afvalindustrie help verbeter het. Hulle moet ook die moontlike uitwerking op die omgewing bepaal.

Questions & Answers

what is want, cost,
Muhammad Reply
in what ways is monopolist competition different from perfect competition
Juliana Reply
what is economics
Lizzy Reply
is the study of how you can make your own business to develop yourself and even the other countries
Abdifatah
the study of economic enable us to practice how to manage and arranged our daily basic of life.
Jonathan
Economics is a science that studies human behaviour as a relationship between ends and scarce means. .
Dan
Am I totally agree the scare means are the wants and beings the humans need
Anastassiya
simple meaning.....Demand and Supply
Pranav
economics is science and art economics means , branch of that knowledge which teach of economic nature
RAJESH
Expalin why demand curve for a perfectly competitive firm is perfectly elastic and eams normal profit in the long run
Abdi Reply
how does elasticity helps in our daily lives
Chris Reply
it help me a lot, in search for slipper I can purchase shoe, in such for car I can purchase bike it helps a lot to everyone in the world.
Jonathan
List and explain four factors of production
Vuyo Reply
capital labour entrepreneur natural resources
Thembi
land labour entrepreneur capital
Ebrima
What is supply
Ogodo Reply
when the supply decreases demand also decreases
Thembi
supply is the quantity of good and services a producer is willing to supply to the market for sale at a particular price
Ebrima
when supply decrease daman is high
Dorcas
supply is the quantity of goods and services which willing to supply to market to sale a particular price
Dorcas
types of demand and the explanation
akin Reply
what is demand
akin Reply
other things remaining same if demend is increases supply is also decrease and if demend is decrease supply is also increases is called the demand
Mian
if the demand increase supply also increases
Thembi
you are wrong this is the law of demand and not the definition
Tarasum
Demand is the willingness of buy and ability to buy in a specific time period in specific place. Mian you are saying law of demand but not in proper way. you have to keep studying more. because its very basic things in Economics.
Hamza
Demand is the price of Quantity goods and services in which consumer's are willing and able to offer at a price in the market over a period of time
Umar
Demand is the quantity of goods and services that the consumer are willing and able to buy at a alternative prices over a given period of time. But mind you demand is quite different from need and want.
Tarasum
Demand can be defined as the graphical representation between price&demand
alkasim
sorry demand is nt a graphical representation between price and quantity demand but instead that is demand curve.
Ebrima
Demand is the willingness and ability of a consumer to buy a quantity of a good over a given period of time assuming all other things remain constant.
Vedaant
Demand is define as the good's and services,that a consumer is willing and able to purchase at a particular period of time.
Jonathan
what is commercialization?
Doris Reply
commercial is the process of changing non profit orientating organisation to profit orientating organisation.
Ebrima
How to talk loan for bank?
Alfred Reply
what is the meaning of gpa?
Ritisha Reply
Answer: GPA stands for Grade Point Average. It is a standard way of measuring academic achievement in the U.S. Basically, it goes as follows: Each course is given a certain number of "units" or "credits", depending on the content of the course.
Yusuf
what is small and Microbuisenes
tadesse Reply
What is fiscal policy
Dansofo
Who is the funder of Economic
Dansofo
founder , that is Adam Smith
Daniel
Adams smith
Juliana
what is model
Daniel Reply
The wealth of Nations
Yusuf Reply
the wealth of nations, is it the first?
Umar
Yes very sure it was released in 1759
Yusuf
thank you Yusuf.
Umar
then when did he died?
Umar
17 July 1790 Born: 16 June 1723, Kirkcaldy, United Kingdom Place of death: Panmure House, Edinburgh, United Kingdom
Yusuf
1790
Yusuf
that's my today questions, thank you Yusuf it's bed time see u after.
Umar
Difference between extinct and extici spicies
Amanpreet Reply
While the American heart association suggests that meditation might be used in conjunction with more traditional treatments as a way to manage hypertension
Beverly Reply
in a comparison of the stages of meiosis to the stage of mitosis, which stages are unique to meiosis and which stages have the same event in botg meiosis and mitosis
Leah Reply
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Source:  OpenStax, Tegnologie graad 9. OpenStax CNX. Sep 15, 2009 Download for free at http://cnx.org/content/col11070/1.1
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