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Tegnologie

Graad 6

Stelsels en beheer: ‘n elektriese skok

Module 14

Waarom brand ‘n gloeilamp in ‘n stroombaan?

Agtergrond

Die elektriese energie word in hitte-energie omgesit en die gloeilamp gloei, want die wolframdraad in die gloeilamp bied weerstand teen die kragstroom. Die gas in die gloeilamp voorkom dat die draad uitbrand. Apparate soos gloeilampe, luidsprekers en stoofplate wat lig, hitte en klank voortbring, bied ook ‘n soort weerstand teen die stroom. ‘n Apparaatjie wat beweging kan voortbring, is ‘n elektriese motortjie.

Opdrag 1

  1. Bou ‘n eenvoudige stroombaan soos in die skets verduidelik.

Teken ‘n stroomdiagram van bogenoemde skets.

  1. Voeg nog ‘n gloeilamp in serie in die stroombaan. Brand die lig van die gloeilampe nou flouer of helderder?

Waarom? Onderstreep: Die beskikbare energie vir elke gloeilamp word (gehalveer/verdubbel).

Wat sal gebeur as een van die gloeilampies breek?

LU/AS 1.3
  1. Voeg nou ‘n gloeilamp in parallel in die stroombaan saam met (a). Skyn albei gloeilampies ewe helder?

Waarom? Onderstreep: (Dieselfde/verskillende) hoeveelheid energie word aan albei gloeilampies verskaf.

Wat sal gebeur as een van die gloeilampies breek?

  1. Toepassing: Onderstreep Die ligte in ons huise bly helder, al skakel jy hulle ook gelyk aan. Hulle kry dus dieselfde hoeveelheid elektriese energie van die kragbron. Die ligte in ons huise word dus in (serie/parallel) geskakel.
  2. Voel aan die gloeilampies.

Voel hulle warm of koud?

‘n Gloeilamp wat brand, verskaf dus nie net lig-energie nie, maar ook -energie.

LU/AS 1.3

Assessering

Leeruitkomstes(LUs)
LU 1
TEGNOLOGIESE PROSESSE EN VAARDIGHEDEDie leerder is in staat om tegnologiese prosesse en vaardighede eties en verantwoordelik toe te pas deur gepaste inligtings- en kommunikasietegnologie te gebruik.
Assesseringstandaarde(ASe)
Dit is duidelik wanneer die leerder die volgende doen :
Ondersoek:
1.2 vind uit oor bestaande produkte wat relevant vir ‘n probleem, behoefte of geleentheid is, en identifiseer en vergelyk die ontwerpaspekte daarvan (bv. vir wie dit is, waarvoor dit is, hoe dit lyk; waarvan dit gemaak is, hoe dit werk, of dit die omgewing sal affekteer);
1.3 voer, waar gepas, ‘n wetenskaplike ondersoek uit oor begrippe wat relevant vir ‘n probleem, behoefte of geleentheid is deur wetenskapprosesvaardighede te gebruik;

Memorandum

Opdrag 1

(a)

(b) flouer

gehalveer

Die stroom sal nie vloei nie.

(c) Ja

Dieselfde

Die ander gloeilampie sal bly brand.

(d) parallel

(e) warm

warmte

Questions & Answers

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
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
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
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
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Source:  OpenStax, Tegnologie graad 6. OpenStax CNX. Sep 07, 2009 Download for free at http://cnx.org/content/col11004/1.1
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