<< Chapter < Page Chapter >> Page >

Natuurwetenskappe

Die aarde en daarbuite

Die sterre

Opvoeders afdeling

Memorandum

1. Ster: Hemelliggaam wat lig uitstraal. Bestaan hoofsaaklik uit helium en waterstof wat brand.

Planeet: Lewelose hemelliggaam wat sy lig van die son ontvang.

2. Kyk p.2 in die module.

Leerder afdeling

Inhoud

Die oermens het die bewegings van sterre en planete in mites en legendes probeer verklaar. Die antieke Grieke was meer wetenskaplik, maar selfs hulle het verkeerdelik geglo dat die aarde die middelpunt van die heelal was.

Slegs sedert ‘n paar honderd jaar gelede het ons besef dat die aarde ‘n baie klein, nietige stippeltjie is. Ons klein planeet draai om die son, wat op sy beurt slegs een van die ongeveer 100 000 miljoene sterre in ons sonnestelsel is en ons weet nou dat daar bowendien nog minstens 1 000 miljoen ander sterrestelsels bestaan.

Aktiwiteit: om die gebruik van sterre en planete by die ontwikkeling van kalenders te kan bespreek [lu 2.1]

Die Christenkalender

  • Hierdie kalender gebruik die son as hooftydhouer. Een jaar is dus 365¼ dae lank - die presiese lengte wat dit neem vir die aarde om een maal om die son te draai. Die beginpunt van die Christelike kalender is die geboorte van Jesus Christus. Jare voor die gebeurtenis word voor Christus of vC genoem, en die jare na sy geboorte staan bekend as na Christus of nC.
  • Hierdie kalender word die algemeenste oor die wêreld gebruik (ook deur nie-Christene).

Die Moslemkalender

  • Die Moslemgemeenskap gebruik die maan as sy tydhouer. (Die maan is stil en leweloos en maak geen lig van sy eie nie, maar weerkaats slegs die lig van die son. Die maan is dus nie ‘n ster nie.) ‘n Jaar is 354 of 355 dae en daarom word daar in 30-jaar siklusse gewerk.

Die Joodse Kalender

  • Die Jode gebruik in hulle kalender die maan om die dae en maande te tel en die son om die jare te tel. Die beginpunt is die Bybelse skepping van die aarde.
  • Hoewel die Joodse en Christenkalenders die son gebruik om die jare te tel, stem die datums van die Jode en Christene se nuwejaar nie ooreen nie.

Die Chinese Kalender

  • Die son en die maan word deur die Chinese gebruik as tydhouers. Hulle jare is 353, 354 of 355 dae lank en daarom word jaarsiklusse gebruik: 60 jaar vorm die hoofsiklus met 12 jaar periodes binne die siklus: 12 jaar en ‘n dertiende skrikkeljaar elk. Elk van die jare is na ‘n verskillende dier vernoem.
  • Elke dier het eienskappe wat, soos die Chinese glo, oorgedra word aan diegene wat in daardie jaar gebore is.

VIND UIT

1. Gebruik ‘n verklarende woordeboek of enige ander betroubare bron en vind uit wat is die verskil tussen ‘n ster en ‘n planeet.

Ster: _________________________________________________
_________________________________________________
_________________________________________________
Planeet: _________________________________________________
_________________________________________________
_________________________________________________

2. Beskryf hoe die kalenders van die Christene, Jode, Moslems en Chinese van mekaar verskil.

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

Assessering

Leeruitkomste 2: Die leerder ken, interpreteer en pas wetenskaplike, tegnologiese en omgewingskennis toe.

Assesseringstandaard 2.1: Dis duidelik wanneer die leerder betekenisvolle inligting onthou.

Questions & Answers

differentiate between demand and supply giving examples
Lambiv Reply
differentiated between demand and supply using examples
Lambiv
what is labour ?
Lambiv
how will I do?
Venny Reply
how is the graph works?I don't fully understand
Rezat Reply
information
Eliyee
devaluation
Eliyee
t
WARKISA
hi guys good evening to all
Lambiv
multiple choice question
Aster Reply
appreciation
Eliyee
explain perfect market
Lindiwe Reply
In economics, a perfect market refers to a theoretical construct where all participants have perfect information, goods are homogenous, there are no barriers to entry or exit, and prices are determined solely by supply and demand. It's an idealized model used for analysis,
Ezea
What is ceteris paribus?
Shukri Reply
other things being equal
AI-Robot
When MP₁ becomes negative, TP start to decline. Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 • Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of lab
Kelo
Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 • Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of labour (APL) and marginal product of labour (MPL)
Kelo
yes,thank you
Shukri
Can I ask you other question?
Shukri
what is monopoly mean?
Habtamu Reply
What is different between quantity demand and demand?
Shukri Reply
Quantity demanded refers to the specific amount of a good or service that consumers are willing and able to purchase at a give price and within a specific time period. Demand, on the other hand, is a broader concept that encompasses the entire relationship between price and quantity demanded
Ezea
ok
Shukri
how do you save a country economic situation when it's falling apart
Lilia Reply
what is the difference between economic growth and development
Fiker Reply
Economic growth as an increase in the production and consumption of goods and services within an economy.but Economic development as a broader concept that encompasses not only economic growth but also social & human well being.
Shukri
production function means
Jabir
What do you think is more important to focus on when considering inequality ?
Abdisa Reply
any question about economics?
Awais Reply
sir...I just want to ask one question... Define the term contract curve? if you are free please help me to find this answer 🙏
Asui
it is a curve that we get after connecting the pareto optimal combinations of two consumers after their mutually beneficial trade offs
Awais
thank you so much 👍 sir
Asui
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities, where neither p
Cornelius
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities,
Cornelius
Suppose a consumer consuming two commodities X and Y has The following utility function u=X0.4 Y0.6. If the price of the X and Y are 2 and 3 respectively and income Constraint is birr 50. A,Calculate quantities of x and y which maximize utility. B,Calculate value of Lagrange multiplier. C,Calculate quantities of X and Y consumed with a given price. D,alculate optimum level of output .
Feyisa Reply
Answer
Feyisa
c
Jabir
the market for lemon has 10 potential consumers, each having an individual demand curve p=101-10Qi, where p is price in dollar's per cup and Qi is the number of cups demanded per week by the i th consumer.Find the market demand curve using algebra. Draw an individual demand curve and the market dema
Gsbwnw Reply
suppose the production function is given by ( L, K)=L¼K¾.assuming capital is fixed find APL and MPL. consider the following short run production function:Q=6L²-0.4L³ a) find the value of L that maximizes output b)find the value of L that maximizes marginal product
Abdureman
types of unemployment
Yomi Reply
What is the difference between perfect competition and monopolistic competition?
Mohammed
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get Jobilize Job Search Mobile App in your pocket Now!

Get it on Google Play Download on the App Store Now




Source:  OpenStax, Natuurwetenskappe graad 6. OpenStax CNX. Sep 17, 2009 Download for free at http://cnx.org/content/col11080/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Natuurwetenskappe graad 6' conversation and receive update notifications?

Ask