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2.8 Besparing van elektrisiteit

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Natuurwetenskappe

Graad 4

Energie en verandering

Module 33

Besparing van elektrisiteit

Aktiwiteit:

Om maniere te bespreek hoe om elektrisiteit te bespaar

[lu 3.2]

Bring ‘n ou elektrisiteitsrekening van julle huis skool toe en bespreek dit. Kyk hoe die bedrag van maand tot maand, somer en winter en huis tot huis verskil.

Bespreek wenke oor die besparing van elektrisiteit in julle huis. Deel dit vanaand met jou ouers.

Moenie warm kos/vloeistowwe in die yskas sit nie.

Moenie water in ‘n kastrol op die stoof kook nie – gebruik liewer die ketel.

Moenie ‘n kastrol met ‘n skewe boom gebruik nie, want dit het meer hitte nodig.

Moenie ‘n groot plaat gebruik vir ‘n klein kastrolletjie/pan nie – ongebruikte hitte gaan verlore

Moenie die stoof gebruik om ‘n vertrek te verwarm nie – ‘n verwarmer werk goedkoper.

Skakel onnodige ligte af .

Moenie meer as net genoeg warm water gebruik om te bad nie.

Sorg dat krane en storte nie lek nie.

Gebruik koue water vir wasgoed.

ONTHOU: jy betaal vir die elektrisiteit wat jy vermors!

Kies ‘n vertrek in jou huis. Knip prentjies van toestelle wat die meeste in daardie vertrek gebruik word uit ou tydskrifte en koerante. Advertensies van meubelwinkels sal ook goed te pas kom. Plak dit in die spasie hieronder.

Assessering

LEERUITKOMS 3: WETENSKAP, DIE SAMELEWING EN DIE OMGEWING Die leerder is in staat om begrip van die onderlinge verband tussen wetenskap en tegnologie, die samelewing en die omgewing te toon.

Assesseringstandaard

Dis duidelik wanneer die leerder

  • die impak van wetenskap en tegnologie verstaan.

Memorandum

Hoe om elektrisiteit te bespaar

  • Warm kos in die yskas is verkeerd.
  • Water kook in ‘n kastrol is verkeerd, in ‘n ketel is korrek.
  • ‘n Skewe kastrol is verkeerd, ‘n plat boom is korrek.
  • ‘n Klein kastrol op ‘n groot plaat is verkeerd, ‘n klein kastrol op ‘n klein plaat is korrek.
  • ‘n Stoof as verwarmer is verkeerd, ‘n verwarmer is korrek.
  • Om onnodige ligte af te skakel, is korrek.
  • Te veel water in ‘n bad is verkeerd.
  • Stort is korrek.
  • Warm water vir wasgoed is verkeerd.

Questions & Answers

how does Neisseria cause meningitis
Nyibol Reply
what is microbiologist
Muhammad Reply
what is errata
Muhammad
is the branch of biology that deals with the study of microorganisms.
Ntefuni Reply
What is microbiology
Mercy Reply
studies of microbes
Louisiaste
when we takee the specimen which lumbar,spin,
Ziyad Reply
How bacteria create energy to survive?
Muhamad Reply
Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
_Adnan
But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Muhamad
they make spores
Louisiaste
what is sporadic nd endemic, epidemic
Aminu Reply
the significance of food webs for disease transmission
Abreham
food webs brings about an infection as an individual depends on number of diseased foods or carriers dully.
Mark
explain assimilatory nitrate reduction
Esinniobiwa Reply
Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
Elkana
Examples of thermophilic organisms
Shu Reply
Give Examples of thermophilic organisms
Shu
advantages of normal Flora to the host
Micheal Reply
Prevent foreign microbes to the host
Abubakar
they provide healthier benefits to their hosts
ayesha
They are friends to host only when Host immune system is strong and become enemies when the host immune system is weakened . very bad relationship!
Mark
what is cell
faisal Reply
cell is the smallest unit of life
Fauziya
cell is the smallest unit of life
Akanni
ok
Innocent
cell is the structural and functional unit of life
Hasan
is the fundamental units of Life
Musa
what are emergency diseases
Micheal Reply
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
_Adnan
define infection ,prevention and control
Innocent
I think infection prevention and control is the avoidance of all things we do that gives out break of infections and promotion of health practices that promote life
Lubega
Heyy Lubega hussein where are u from?
_Adnan
en français
Adama
which site have a normal flora
ESTHER Reply
Many sites of the body have it Skin Nasal cavity Oral cavity Gastro intestinal tract
Safaa
skin
Asiina
skin,Oral,Nasal,GIt
Sadik
How can Commensal can Bacteria change into pathogen?
Sadik
How can Commensal Bacteria change into pathogen?
Sadik
all
Tesfaye
by fussion
Asiina
what are the advantages of normal Flora to the host
Micheal
what are the ways of control and prevention of nosocomial infection in the hospital
Micheal
what is inflammation
Shelly Reply
part of a tissue or an organ being wounded or bruised.
Wilfred
what term is used to name and classify microorganisms?
Micheal Reply
Binomial nomenclature
adeolu
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Source:  OpenStax, Natuurwetenskappe graad 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11097/1.1
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