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Natuurwetenskappe

Graad 5

Lewe en lewenswyse

Module 13

Voëls

Aktiwiteit:

Om kennis te neem van hoe enkele voëlsoorte verskillend aangepas is

[lu 2.2]

Wat maak die voëls eiesoortig?

  • Dit is die enigste dier met vere as huidbedekking. Die vere hou die voël warm en droog. Dit help ook die voël om te vlieg.
  • Die voorste ledemate van voëls (hulle “arms”) het verander om vlerke te vorm.
  • Voëls het lugsakke in hul bene wat hulle lig maak sodat hulle kan vlieg.
  • Voëls se borsbeen vorm ‘n kiel waaraan hul sterk vliegspiere vasgeheg is.
  • Voëls het deursigtige vliese oor hul oë sodat hulle hul oë tydens vlieg kan oophou.
  • Hul oë is besonder goed ontwikkel. Dink maar aan arende en valke.
  • Voëls kan nie ruik nie en is dus vir voeding geheel en al van hul smaaksintuie afhanklik.

INTERESSANTE FEITE I.V.M. VOËLS

  • Die volstruis is die grootste voëlsoort en lê die grootste eier.Volstruise word geteël vir hul eiers, vel, vere en vleis.Die volstruis skop sy vyand en kan ook seer pik.
  • Die Bloukransvoël: Nasionale voël van Suid-Afrika.
  • Die Kolgans: Die ou Egiptenare het hierdie voël as heilig beskou.

DIE POTE VAN VOËLS

In pare: Bestudeer die verskillende soorte pote en sê by watter voël hiernaas die pote pas. Motiveer waarom julle so besluit het deur na hul voedingswyse en leefwyse te verwys.

A BC

Jy kan gerus by die huis kyk na die snawels van voëls en hoe hulle by hul voedingswyse aangepas is.

Opdrag: groepwerk

Nie alle voëls bou neste nie.

  1. Noem een soort voël wat nie ‘n nes bou nie.
  1. Maak ‘n eenvoudige skets van die voël. Skets ook waar die eiers gelê word.
  2. Die meeste voëls bou neste. Waarom?
  1. Kies een soort voël wat jy in jou omgewing waarneem.
  1. Identifiseer die soort voël.
  1. Maak ‘n skets van die nes en voël.
  2. Gewaar jy die mannetjie en wyfie? Verskil hulle in voorkoms? Hoe? Hoekom?
  1. Hoe is voëls oor die algemeen aangepas om kos te kan soek en die kos te kan bekom?

Assessering

 

LU 2

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

Dit is duidelik wanneer die leerder:

2.1   betekenisvolle inligting onthou;

2.2   inligting kategoriseer;

2.3       inligting interpreteer.

 

Memorandum

A - muisvoëls, pote slegs om aan takke te kan klou.

B - arend of valk (alle roofvoëls), sterk kloue om prooi te kan vang.

C - eend, soos alle voëls wat in water swem: swemvlak wat die oppervlak vergroot.

Opdrag:

Groepwerk: Nie alle voëls bou neste nie

1. Nonnetjie uil; rooivalkie (ou neste); belangrikste: kiewiet

  1. Om eiers in te lê aan die begin van die lente. Dit word selde gebruik om in te slaap.

In pare

  • Bokkies, muise, rotte, molle, paddas, voëls, ens.
  • Molslang – vreet muise, molle wat ‘n las in die landerye is.
  • Hulle vreet rietrotte wat die suikerriet vreet.
  • Die eiervreter.
  • Ja – die koraalslang doen dit veral.
  • Eie navorsing.
  • Oë, reuk (tonge).

Aktiwiteit 3.6Om meer kennis op te doen oor die padda as voorbeeld van amfibieëLU 1.1

LU 1.2

Aktiwiteit 3.7Om eie kennis van visse uit te breiLU 1.2

Questions & Answers

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
Do somebody tell me a best nano engineering book for beginners?
s. Reply
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
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
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Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
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Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
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Sravani Reply
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AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
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after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
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Prasenjit
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Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
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Prasenjit Reply
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 5. OpenStax CNX. Sep 23, 2009 Download for free at http://cnx.org/content/col10980/1.2
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