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Natuurwetenskappe

Graad 8

Omgewing en interaksies

Module 34

Rol van plante in 'n ekosisteem

Aktiwiteit 1:

Om die rol van plante te identifiseer

[lu 2.4]

Voltooi die kolom deur òf die beskrywing òf die funksie aan te dui. Voltooi die regter­kantste kolom deur van die sketse op die sketsblad op die regte plekke in te plak.

Skryf nou ’n paragraaf van 270 woorde oor die rol van plante in ekosisteme.

Kon jy basiese rolle onderskei?

[LU 2.4]

Sketsblad aktiwiteit 1

Sketsblad aktiwiteit 2

Aktiwiteit 2:

Om die rol van diere in ekosisteme te bespreek

[lu 2.2; 2.4; 3.2]

Voltooi die kolom deur óf die beskrywing óf die funksie aan te dui. Voltooi die regterkantste kolom deur van die sketse op die sketsbladsy op die regte plekke in te plak.

Voor- en Nadele van Diere

Is alle diere voordelig vir die omgewing?

Kan diere skadelik wees vir die omgewing?

Skryf die sinvolle aspekte wat deur klaslede genoem word neer.

Assessering van klasbespreking. Kon jy nadele lys? [LU 3.2]

Assessering

LU 2

Wetenskaplike Kennis

Die leerder ken, interpreteer en pas wetenskaplike, tegnologiese en omgewingskennis toe.

Dit is bewys as die leerder:

2.1 sinvolle inligting kan onthou;

2.2 inligting in kategorieë kan plaas;

2.3 inligting kan interpreteer;

2.4 kennis kan toepas.

LU 3

Wetenskap, die Gemeenskap 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.

Dit is bewys as die leerder:

3.1 wetenskap as ‘n menslike aktiwiteit kan verstaan;

3.2 volhoubare gebruik van die aarde se hulpbronne verstaan.

Memorandum

Aktiwiteit: rol van plante in ’n ekosisteem

Paragraaf oor rol van plante

Oefen die leerder se vermoë om skriftelik te kommunikeer deur die inhou van voorafgaande tabel in paragraafvorm te stel en daarop uit te brei.

Aktiwiteit: rol van diere in ’n ekosisteem

KLASBESPREKING

Kan diere skadelik wees vir die omgewing?

  • Ja – veral oorbeweiding lei tot verlies van plante wat lei tot erosie. Uitheemse diere kan skadelik wees aangesien hulle natuurlike vyande nie teenwoordig is nie en hulle getalle dus in so ’n mate groei dat hulle die inheemse diere verdring en oorneem. Dit kan tot die uitroeiing van bepaalde dier- en plantsoorte lei.

Questions & Answers

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
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
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 8. OpenStax CNX. Sep 12, 2009 Download for free at http://cnx.org/content/col11049/1.1
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