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Natuurwetenskappe

Graad 4

Materie en stowwe

Module 57

Die gevare van besoedeling

Aktiwiteit:

Om die gevare van besoedeling te kan bespreek en ‘n verskil te probeer maak

[lu 3.1.2, 3.2.1]

Ongelukkig kan materie besoedeling veroorsaak. Ons almal weet hoe belangrik dit is om ons omgewing te bewaar en besoedeling so ver as moontlik te probeer verhoed.

Kom ons gaan stap op ons skoolterrein. Kyk goed na jou omgewing en skryf jou bevindinge neer.

Skryf vier goeie dinge neer wat jy op die skoolterrein sien.

Skryf vier dinge neer wat jy gesien het wat jou ontstel, of wat ons omgewing negatief kan beïnvloed.

Kies nou een van die negatiewe dinge en skryf ‘n brief aan die skoolhoof om ‘n voorstel te maak hoe ons die probleem kan oplos.

Geagte __________________________

Laat ‘n onderwyser of ‘n lid van die leerderraad ‘n aankondiging oor die interkom maak oor die probleem en ‘n beroep op die leerders doen om iets daaromtrent te doen.

Rolspel: Jy is ‘n televisieverslaggewer. Jy moet verslag doen oor die toestand oor julle skoolterrein na pouse.

Bespreek nou metodes om besoedeling hok te slaan. Maak ‘n plakkaat en plak dit teen die muur voor julle klas.

Bespreek die nut van vullisverwydering deur die munisipaliteit. Vind uit hoe dit in die ou dae verwyder is en hoe die higiëniese omstandighede deur die jare verbeter het.

Kom ons gebruik afvalmateriaal en maak vir

Gemorsjors

  1. Kry ‘n lekker groot boks en trek dit oor met enige papier of karton wat weggegooi moet word.
  2. Maak vir hom ‘n gesig van ‘n kleiner boks en plak dit vas.
  3. Maak vir hom ore, ‘n neus, oë en ‘n mond met enige afvalgoed.
  4. Maak vir hom arms, bene en voete.
  5. Bêre hom in julle klas en gooi alle herwinbare papier daarin.

Maak klein plakkaatjies van idees om besoedeling te bestry en hang dit op ‘n vislyn dwarsoor julle klas. Gebruik skuifspelde om dit op te hang.

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

3.1 wetenskap en tegnologie in die konteks van geskiedenis en inheemse kennis verstaan, bv.

3.1.2 beskryf maniere om boodskappe oor lang en kort afstande te stuur.

3.2 die impak van wetenskap en tegnologie verstaan, bv.:

3.2.1 noem hoekom lopende water in ‘n huis mense se lewens makliker kan maak.

Memorandum

Besoedeling is ‘n ernstige probleem. As ons jeug dit goed verstaan en iets daaromtrent doen, kan die probleem beheer word. Beklemtoon dit baie, dit sal sommer die terrein, die klaskamer en die dorp skoon hou!

Morsjors

Maak dit ‘n klasaktiwiteit. Die kinders behoort dit baie te geniet!

Questions & Answers

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
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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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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