<< Chapter < Page Chapter >> Page >

Natuurwetenskappe

Graad 9

Lewensprosesse: ‘n gesonde lewe

Module 1

Voeding

  • Die mens is 'n heterotrofe organisme wat dus sy voedsel moet inneem deur plante of diere te eet om sodoende sy energie vir groei en herstel te kan bekom.
  • Voedsel moet ook verteer word om die energiewaarde en die voedingstowwe te ontsluit.
  • Energie word benodig vir alle aktiwiteite en lewensprosesse.
  • Die mens se dieet is dus al die kos wat hy inneem en die vloeistowwe wat hy drink.
  • Die studie van al die aspekte rondom sy dieet noem ons voeding .

Voedsel word in die volgende hoofgroepe verdeel:

VOEDSELGROEP Bronne Funksie Boueenhede
PROTEÏNE Vleis, vis, eiers, soja Groei en herstel Aminosure
KOOLHIDRATE Stysels, bv. brood en pastaSuikers Energiebronne Glukose
VETTE Botter, olies, vet EnergiebronBeskerming Vetsure en Gliserol
MINERALE, VITAMIENE EN WATER Vrugte en groente BeskermingGesondheid VitamieneMineraleWater
  • Dieetkundiges gee 'n ander verdeling met aanbevole daaglikse hoeveelhede (ADH). Hulle sal vir jou sê jy moet elke dag 'n sekere hoeveelheid porsies (in hakies) suiwelprodukte (2), graanprodukte (2-4), asook proteïne (2-3) en vrugte en groente (3-5) eet.

Aktiwiteit: energie per dag

  • Bestudeer die volgende kolomwaardes en meegaande kolomgrafiek en beantwoord die vrae wat volg:
OUDERDOM EN GESLAG ENERGIE IN kJ
Babas 3 250
Mans:
5-6 7 250
12-14 1 1000
18-34 redelik aktief 1 2000
35-64 redelik aktief 1 1500
Vroue:
5-6 7 000
12-14 9 000
18-54 redelik aktief 9 000
55+ 8 000
Swanger 10 000
Borsvoedend 11 500

1. Waarom dink jy is daar 'n verskil tussen mans en vroue se kJ behoefte?

2. Hoekom is 'n swanger en borsvoedende vrou se behoefte so groot?

3. Waarom is die mynwerker se kJ behoefte so groot?

4. Waarvoor staan kJ?

5. Waarom neem ouer vroue se energiebehoefte so af?

Assessering: Interpretasie van tabelle en kolomgrafiek

Kon jy die korrekte afleidings maak?

[LU 2.3]

Aktiwiteit: ONTLEDING

JOU VOEDSELINNAME

  • Voltooi die volgende tabel oor jou dieet van die afgelope 24 uur. Dui voedselgroepe aan met die kodes Proteïene (P), Koolhidrate (K), Vette (V)
Ontbyt Kode Middagete Kode Aandete Kode
.................................. ......... .............................. ......... ............................ .........
.................................. ......... .............................. ......... ............................ .........
.................................. ......... .............................. ......... ............................ .........
.................................. ......... .............................. ......... ............................ .........
.................................. ......... .............................. ......... ............................ .........
.................................. ......... .............................. ......... ............................ .........
.................................. ......... .............................. ......... ............................ .........

1. Hoeveel porsies proteïne het jy ingeneem?

2. Hoeveel porsies vrugte en groente het jy ingeneem?

3. Hoeveel water het jy gedrink?

4. Het jy dus 'n gebalanseerde dieet gevolg? Indien nie, watter aanpassings moet jy maak?

5. Teken 'n sirkeldiagram om die proporsie koolhidrate , proteïne en vette wat jy ingeneem het oor die 24 uur-periode aan te dui.

Assessering van ONTLEDING:

Kon jy jou dieet ontleed en korrekte afleidings maak?

[LU 1.3]

Klasaktiwiteit: DEMONSTRASIE VAN VOEDSELTOETSE

  • Voltooi die volgende na afloop van 'n demonstrasie:
VOEDINGSTOF REAGENS POSITIEWE TOETS
STYSEL JODIUMOPLOSSING(Geelbruin oplossing)
VETTE&OLIES VETKOLTOETS

Assessering VOEDSELTOETS DEMONSTRASIE:

Kon jy ondersoek doen en data kollekteer?

[LU 1.2]

Assessering

LU 1

Wetenskaplike Ondersoek

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

Dit is bewys as die leerder:

1.1 ondersoeke kan beplan;

1.2 ondersoek kan uitvoer en data kan versamel;

1.3 data kan evalueer en bevindinge kan kommunikeer.

LU 2

Konstruksie van Wetenskapkennis

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

Dit is bewys as die leerder:

2.1 betekenisvolle inligting kan onthou;

2.2 inligting kan kategoriseer;

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 verstaan;

3.2 die volhoubare gebruik van die aarde se hulpbronne verstaan.

Memorandum

Voeding

AKTIWITEIT: Energiewaardes en grafiek:

1. mans is meer aktief

2. die vrou se liggaam moet baie ekstra voedingstowwe en prosesse verwerk

3. baie aktief

4. kilojoule – joule is Energie eenheid

5. hulle metabolismes is stadiger – minder aktief

AKTIWITEIT: ONTLEDING VAN JOU VOEDSELINNAME

Eie waarnemings

KLASAKTIWITEIT: Voedseltoetse demonstrasie

  • Styseltoets: bruin jodiumopl. Raak pers swart
  • Vetkoltoets: deurskynende vetkol op papier

Questions & Answers

marginal cost formula
Nandu Reply
you should differentiate the total cost function in order to get marginal cost function then you can get marginal cost from it
boniphace
formula of cross elasticity of demand
Theresia Reply
what is ceteris paribus
Priyanka Reply
what is ceteris parabus
Priyanka
Ceteris paribus - Literally, "other things being equal"; usually used in economics to indicate that all variables except the ones specified are assumed not to change.
Abdullah
What is broker
scor
land is natural resources that is made by nature
scor
What is broker
scor
what is land
kafui
What is broker
scor
land is natural resources that is made by nature
scor
whats poppina nigga turn it up for a minute get it
amarsyaheed Reply
what is this?
Philo
am from nigeria@ pilo
Frank
am from nigeria@ pilo
Frank
so
owusu
what is production possibility frontier
owusu
it's a summary of opportunity cost depicted on a curve.
okhiria
please help me solve this question with the aid of appropriate diagrams explain how each of the following changes will affect the market price and quantity of bread 1. A
Manuela Reply
please l need past question about economics
Prosper Reply
ok let me know some of the questions please.
Effah
ok am not wit some if den nw buh by tommorow I shall get Dem
adepojurafiu
Hi guys can I get Adam Smith's WEALTH OF NATIONS fo sale?
Ukpen
hello I'm Babaisa alhaji Mustapha. I'm studying Economics in the university of Maiduguri
Babaisa
okay
Humaira
my name is faisal Yahaya. i studied economics at Kaduna state university before proceeding to West African union university benin republic for masters
Faisal
Hi guys..I am from Bangladesh..
Mannan
Wat d meaning of management
igwe Reply
disaster management cycle
Gogul Reply
cooperate social responsibility
igwe
Fedric Wilson Taylor also define management as the act of knowing what to do and seeing that it is done in the best and cheapest way
OLANIYI
difference between microeconomics and macroeconomic
Ugyen Reply
microeconomics is the study of individual units, firm and government while macroeconomics is the study of the economic aggregates.
okhiria
The classical theory of full employment
Lovely
what is monopoli power
Adzaho Reply
the situation that prevails when economic forces balance so that economic variables neither increase nor decrease
Bombey
what is equilibrium
Kabir
what are the important of economic to accounting students with references
salihu Reply
Economics is important because it helps people understand how a variety of factors work with and against each other to control how resources such as labor and capital get used, and how inflation, supply, demand, interest rates and other factors determine how much you pay for goods and services.
Muhammad
explain the steps taken by the government in developing rural market?
Azeem Reply
government provide good road for than
Abigailb
government should provide good agricultural project and it should also provide good road so that the the product that will come out of the farm will be easy transport to the market
ALIMAMY
farming equipments should be provided to farmers to help them improve in farming
Agbor
improving the transport systems providing enterpreneur edecation to the mass living in rural zones enforcment of loans and capital for the people rising awareness on the advantages of rural areas
abdul
contribution of Adam smith in economics
abel Reply
I will join
Dexter
I will join
Patrick
Hey
Fatima
Hey
Amir
Hello
AS
hey
Umarou
I love this book and i need extra Economic book
Amir
Hey
Amir
what's happening here
AS
I love this book and i need extra Economic book
Amir
what is the meaning of function in economics
Effah Reply
Pls, I need more explanation on price Elasticity of Supply
Isaac Reply
Is the degree to the degree of responsiveness of a change in quantity supplied of goods to a change in price
Afran
what is production
Humaira
Okay what is land mobile and land unmobile
scor
And what are the resources in land
scor
the proces of using the services of labor and equipmnt together with other in puts to make goods and services availble
Bombey
Okay what is land mobile and land unmobile
scor
While the American heart association suggests that meditation might be used in conjunction with more traditional treatments as a way to manage hypertension
Beverly Reply
My ma het umfeseem en ha voete swel baie en sy kani uriene afslaan ni wat kan dit veroorsaak
Miggie Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Natuurwetenskappe graad 9. OpenStax CNX. Sep 15, 2009 Download for free at http://cnx.org/content/col11068/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Natuurwetenskappe graad 9' conversation and receive update notifications?

Ask