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Natuurwetenskappe

Ekosisteem en omgewingsbalans

Opvoeders afdeling

Memorandum

(a) ‘n Woud is ‘n stuk land oortrek met digte bome, struike, varings, ens., en diere. Hierdie plante en diere leef almal saam in die digte bosse.

Opdrag 1:

f)

-boom (produseerder)

-muis (primêre verbruiker)

-uil (sekondêre verbruiker)

-jakkals (tersiêre verbruiker)

Leerder afdeling

Inhoud

1. Inleiding

'n Ekosisteem word gevorm deur alle lewende organismes wat mekaar en hul omgewing onderling beïnvloed.

Die woord ekosisteem is afkomstig van die Griekse woord "oikos", wat huis of huishouding beteken. Net soos lede van 'n gesin saamwoon en mekaar en die gemeenskap ondersteun en beïnvloed (en op hul beurt daardeur geaffekteer en beïnvloed word), so leef organismes saam, plant voort en is vir kos van mekaar afhanklik. Daar is dus 'n hegte verhouding tussen organismes en die grond, son, water en lug.

Aktiwiteit: om ‘n duidelike begrip te kry van wat ‘n ekosisteem is [lu 1.3]

Kom ons bestudeer 'n voorbeeld van 'n ekosisteem:

(a) Wat is 'n woud?____________________________________________________

_____________________________________________________________________

__________________________________________________________________________________________________________________________________________

__________________________________________________________________________________________________________________________________________

__________________________________________________________________________________________________________________________________________

__________________________________________________________________________________________________________________________________________

__________________________________________________________________________________________________________________________________________

__________________________________________________________________________________________________________________________________________

'n Woud is baie meer as net 'n groot stuk land wat oortrek is met bome. Struike, wingerde, varings, mos en paddastoele groei in die skadu van die bome. Baie voëls, soogdiere, reptiele, amfibieë en insekte word in 'n woud aangetref. 'n Woud bestaan dus uit al hierdie plante en diere wat saamleef.

Die diere is van die plante afhanklik vir kos, terwyl die plante sonlig, water, minerale en koolstofdioksied gebruik om voedsel vir hulself en die ander organismes in die woud te vervaardig.

Die lewende organismes (plante en diere) tesame met die nie-lewende omgewing (lug, water, son en grond) vorm 'n ekosisteem.

(b) Tabuleer 'n voorbeeld van elk van die volgende wat in 'n woud gevind word.

Spesie My voorbeeld van 'n ....
voël __________________________
soogdier ________________________
reptiel ________________________
insek ________________________
amfibie ________________________

(c) Teken nou die vyf voorbeelde in die skets om dit te voltooi!

(d) Die Ekosisteemkonsep

Die interaksie tussen organisme en omgewing lei tot die ekosisteemkonsep, wat die interaksie tussen materie, energie en organisme noukeurig verwerk.

‘n ekosisteem

(e) Hoe groot is 'n ekosisteem?

'n Ekosisteem kan enige grootte wees, van 'n poel water op die sypaadjie tot die hele reënwoud in die Amasone of 'n nog groter gebied.

'n Woud, onder andere, vol bome, plante insekte en voëls, is 'n ekosisteem van sekere soorte organismes wat 'n sekere omgewing bewoon. Net so is 'n rots wat in die skadu van die woud staan en oortrek is met mos, rotsplante, inseklarwes en honderdpote ook 'n ekosisteem. Die sisteem is dus geïntegreer, met dele wat intiem met mekaar verband hou. Enigiets wat 'n deel van die sisteem affekteer, affekteer ook die res.

Opdrag 1:

  1. Bestudeer die onderstaande skets van 'n woudekosisteem:

Noem die:

produseerder:: _________________________________________________________

primêre verbruiker: _____________________________________________________

sekondêre verbruiker:: __________________________________________________

tersiêre verbruiker: _____________________________________________________

Primêre beteken eerste.

Sekondêre beteken tweede of minder belangrik.

Tersiêre beteken in hierdie geval derde.

2. Die ekosisteem

Dit is die lewende organismes tesame met die ________________________________

wat in 'n onafskeidbare, interaktiewe verhouding tot mekaar staan.

Die lewende deel kan soos volg onderverdeel word:

(a) voedselproduseerders meestal groen plante

(b) voedselverbruikers is makroverbruikers (diere wat ander organismes eet)

of

ontbinders (bakterieë of swamme wat dooie organismes opbreek)

Assessering

Leeruitkomste 1: Die leerder is in staat om met selfvertroue op weetgierigheid oor natuurlike verskynsels te reageer, en om binne die konteks van wetenskap, tegnologie en die omgewing verbande te ondersoek en probleme op te los.

Assesseringstandaard 1.3: Dit is duidelik wanneer die leerder data evalueer en bevindings kommunikeer.

Questions & Answers

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
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
How can I make nanorobot?
Lily
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
how can I make nanorobot?
Lily
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
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 6. OpenStax CNX. Sep 17, 2009 Download for free at http://cnx.org/content/col11080/1.1
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