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Natuurwetenskappe

Graad 4

Energie en verandering

Module 27

Die gevaar van sonbrand

Aktiwiteit:

Om op die gevaar van sonbrand te wys

[LU 2.1]

Skryf so veel as moontlik dinge neer waarvoor die son gebruik word.

Die son is eintlik ‘n ster wat die aarde van lig en warmte voorsien. Die son se strale is ontsettend sterk en dit is dus baie belangrik dat ons onsself teen hierdie strale moet beskerm. Dit is baie makliker om skade aan jou vel te voorkom as wat dit is om dit later in jou lewe te herstel.

Hou ‘n groepgesprek oor die skade wat son aan jou vel kan aanrig en voltooi dan die take.

  1. As jy sonder voorsorg te lank in die son speel, kan die volgende gebeur:
  1. Dink wat jy nodig het om jouself teen die son te beskerm. Plak advertensies wat jy uit ou tydskrifte knip op ‘n vel papier.
  1. Hoekom, dink jy, is daar steeds mense wat in die son wil lê en sonbrand om bruin te brand?
  1. Skryf ‘n briefie aan julle skoolhoof om aan hom/haar ‘n paar wenke te gee oor hoe die kinders in jou skool teen sonskade beskerm kan word. Vra jou onderwyser om al die briefies aan hom/haar te oorhandig.

Assessering

LEERUITKOMS 2: KONSTRUKSIE VAN WETENSKAPLIKE KENNISDie leerder ken, interpreteer en pas wetenskaplike, tegnologiese en omgewingskennis toe.

Assesseringstandaard

Dit is duidelik wanneer die leerder

2.1 betekenisvolle inligting onthou.

Memorandum

Skryf so veel as moontlik dinge neer waarvoor die son gebruik word.

  • Son verskaf energie aan die mens, plante en diere.
  • Die son verhit die aarde.
  • Die son verlig die aarde.
  • Die son hou ons warm.
  • Die son laat plante groei.
  • Enige ander aanvaarbare antwoord.

Hou ‘n groepgesprek oor die skade wat son aan jou vel kan aanrig en voltooi dan die take.

1. Jou vel kan baie seer verbrand, selfs blase kan vorm.

2. Leerders knip prentjies uit plak dit in die oop spasie. Hulle kan selfs werklike produkte bring wat in die klas bespreek kan word.

3. Modelle wat in advertensies gebruik word, word altyd as sonbruin voorgehou. Dit plaas druk op die gewone mens om ook so te lyk. (Gesels sommer hier oor groepsdruk!) Enige aanvaarbare antwoord.

4. Laat hulle briefies skryf om aan die skoolhoof te gee. Daar behoort interessante dinge uit te kom.

Mnr. Breinsel:

  • Ongeveer 150 miljoen km van die aarde af.
  • Temperatuur 15 miljoen grade C.

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
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
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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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