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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

what are the differences between change in demand and change in quantity demand
Sulaiman Reply
what is consumers behaviour
Marfo Reply
importance of income
Emmanuel Reply
Tfor settlement of debt. For purchases. For payment of bills. For daily transactions. For social & recreational enjoyment. For business purposes etc
Oyetunde
thanks
Emmanuel
For investment purposes For security purposes For purpose of forecasting & strategizing.
Oyetunde
what is the real definition of economics
jegede Reply
Economics is the study of the use and allocation of (scarce) resources
demsurf
Jegede, what is the "non" real definition of economics then?
Ernest
Economics is a study of how human use limited resources to fulfil their unlimited want
Musa
the study of how a society use scarce factors of production efficiently so as meet aggregate social demand
Marc
incidence of production there is a choice do you agree? justify
Oduro Reply
What is incidence of production? do u mean incidence of tax?
Aryeetey
I want to know about Richard lipsey and robin as the economist and their definition proposed by them
Musa Reply
what are the causes of scarcity And what are the goal scarcity
Musa
scarcity only exist because human wants are unlimited...if human just know how to be contented then scarcity will not exist
Ylaine
what is ment by possibility curve
Ruzaiq
define accounting?teatly
Ahmed Reply
Is the recording, classifying, interpreting record of all transaction
Yuusuf
is still the act of measuring, interpreting and communicating of financial issues
Yuusuf
measuring business or individual finance
Zeyi
Accounting is the process of collecting,recording,classifying,summarizing and interpreting/presenting financial data to the stakeholders for their economic decision making
asri
hi
Otilina
hi
AVIAH
wat is PPC
ALLAJI
what are the different between need and wants
Musa Reply
the major difference is necessity
Yuusuf
explain any four tool of monetary policy to solve the problem of inflation.
Alicesha Reply
bank rate,open market operation,legal reserve requirement
Johnson
what's marginal utility?
Abena Reply
the additional utility you get if you can consume one more unit of the good x
Luka
Thanks... then what's the law of diminishing marginal utility ?
Abena
The utility decreases with every unit you consume (most of the time). The first unit of consumption will therefore give you the highest utility. Sorry about my english
Luka
Okay... I understand now
Abena
Great!
Luka
hello room
Lawal
one of the leading industrial nations of the world ranking second in manufacturing output after the USA is a. Russia b. Germany c. Britain d. Japan
Lawal
china
Siddharth
japan
Siddharth
good morning
Lamin
hi
Rafiu
hi
nivedha
japan
Ylaine
morning
Adegboye
no other questions?
Ylaine
hii
Dipun
I am from India
Dipun
same question are not mentioned
Dipun
first you give my answer
Dipun
hi
adelakun
welcome
Ahmed
dipun naik
Ahmed
whats your question
adelakun
whats your question
adelakun
I am from India
Dipun
retype the questions
adelakun
marginal untility is the last point desire of a consumer that gets benefit from related good/ service.
Saboor
Why are some countries rich and why are some countries poor? . is poorness a human cause?
Yacquub
well several factors are included...it's not just because of human..
Ylaine
what is a correct reason
Vijay
Japan
Lawal
countries which are rich they are developed countries they have good resources minerals technology power knowledge to use the resources poor countries are under developing countries they have lack of resources, knowledge and if they have these so they dont know the use of these resources.
Siddharth
so these knowledgeable people move /migrate to the other rich/developed countries
Siddharth
Poverty of a country is also related to cultural, economical, and military domination. Usually, the dominant country imposes all of these powers when diplomatically needed or sometimes by force.
Ernest
You can also have considerable poverty in a rich country when such poverty is measured within sectors of its population. In other words, economic indicators can sometime mask such poverty.
Ernest
For example, the U.S.A. has a very high measure of GDP per capital, but millions of Americans ( a considerable amount are children) live in poverty.
Ernest
So poverty is not an easy social phenomenon to pin down neatly into one social realm or another.
Ernest
pls what is price ceiling
jasmine
its the max price a seller can charge for a product, mostly imposed by the government to protect the consumer
Luka
its the max price a seller can charge for a product, mostly imposed by the government to protect the consumer plus it must be imposed below the equilibrium price in order to be effective. A shortage will also be created after its imposition.
Zafar
can happiness be measured?
Ylaine
Happiness is too subjective to be measured as an economic phenomenon or reality. I think that happiness happens at several levels of the human condition: biological, psychological, intellectual and at the level of the soul. How can economic theory be scientific about it?
Ernest
about I have read of something called gross happiness index.
Ylaine
Germany
Arthur
what's Neo classical definition of economic
Mohammed
hi
ALLAJI
economic is a social science studied as a relationship between end and needs scarce which have alternative uses
ALLAJI
what's equilibrium
Daniel
What is economies of scale
Jeremiah Reply
In microeconomics, economies of scale are the sum of total costs saved or that a firm has advantage over its competitors due to its scale of operations. More specifically, it is the firm's cost savings per unit of output that it gains as its production increases in scale.
Ernest
one of the leading industrial nations of the world ranking second in manufacturing output after the USA is ......... a. Russia b. Germany c. Britain d. Japan
Lawal
what is supply of demand?
Joseph Reply
supply of demand?
Yuusuf
1)importance of internal trade. 2) international trade barriers 3) principles of international trade
umar Reply
how can tell me about the GDP
Mahmood
explain the basic economic concept using ppc ?
Nurul Reply
scarcity can be represented by imagining a country producing only 2 goods and the resources to do so are fixed, hence a choice must be made and how to divide the limited resources between the two goods. you can choose any combination of the two goods that fall directly on the curve which represents
Justin
maximum efficiency and the highest possible output at this point in time. if you choose to not utilize all the resources then you will be inefficient (not to your best ability) and produce below the curve. however if you have increases in technology or find new resources you can shift the curve out
Justin
Please what is meant by resources allocation
albert Reply
Please I need explanation about resources allocation
albert
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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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