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3.2 Sonsopkoms en sonsondergang

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Natuurwetenskappe

Graad 4

Die planeet aarde en die heelal

Module 39

Sonsopkoms en sonsondergang

Aktiwiteit:

Om die tye van sonsopkoms en sonsondergang te ondersoek

[LU 1.2]

Die groot geel bal

Die son is eintlik ‘n baie groot ster wat soos ‘n vuurbal in die middel van die heelal lyk. Dit verskaf aan die aarde lig en warmte wat alle lewende wesens nodig het om te groei. Die energie wat binne-in die son vrygestel word, veroorsaak dat die son skyn. Daar is sonvlekke op die son wat dikwels gesien kan word.

Hou ‘n groepbespreking oor die volgende vrae:

  • Uit watter rigting kom die son soggens op?
  • In watter rigting gaan die son saans onder?
  • Waar, dink julle, gaan die son saans heen?

Hou rekord van die tye van die sonsopkoms en sonsondergang vir twee weke lank. Wat kom jy agter?

Assessering

LEERUITKOMS 1: WETENSKAPLIKE ONDERSOEK

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

Dis duidelik wanneer die leerder

  • ondersoek uitvoer en data versamel.

Memorandum

Mnr. Breinsel:

  • Jong, hoe warm is dit daar by die son?Antwoord:
  • 6 000°C (60 x die temperatuur van kookwater)

Hou ‘n groepbespreking oor die volgende vrae:

  • Uit watter rigting kom die son soggens op? Uit die ooste
  • In watter rigting gaan die son saans onder? In die weste
  • Waar, dink julle, gaan die son saans heen? Gaan nêrens heen nie; die aarde draai om sy eie as; dit skyn nou in ‘n ander deel van die wêreld.

Tyd van sonsopkoms en sonsondergang

Hou 2 weke lank rekord van die sonsopkoms en sonsondergang deur elke dag die koerant skool toe te laat bring en die kinders self te laat kyk na die weerberig. Hulle moet die tyd van die sonsopkoms- en sonsondergang tabuleer. Hulle raak gewoonlik baie opgewonde as hulle sien hoe die tye elke dag verskil!

Questions & Answers

What is inflation
Bright Reply
a general and ongoing rise in the level of prices in an economy
AI-Robot
What are the factors that affect demand for a commodity
Florence Reply
price
Kenu
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
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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
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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
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Source:  OpenStax, Natuurwetenskappe graad 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11097/1.1
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