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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

How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
How can I make nanorobot?
Lily
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
how can I make nanorobot?
Lily
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
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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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