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Natuurwetenskappe

Graad 4

Energie en verandering

Module 26

Die son as bron van energie op aarde

Aktiwiteit:

Om die son as bron van energie vir lewe op aarde te beskryf

[LU 2.1]

Die son is natuurlik ons belangrikste bron van energie. Die mens aanvaar die son as vanselfsprekend, want ons sien elke oggend die son opkom en saans sien ons dit weer ondergaan. Die son stuur sy energie in alle rigtings oor die aarde. Die son verhit die aarde en gee dus op hierdie manier energie aan die aarde. Die plante gebruik van hierdie energie om te groei en wanneer diere die plante eet, kry hulle ook van hierdie energie! Die diere gebruik weer die energie om te beweeg en te groei.

Waar kry ons as mense ons energie vandaan?

Verduidelik in ‘n kort sinnetjie wat op elk van die volgende prentjies gebeur. Skryf die sin netjies onder elke prentjie neer.

Energie is dus nou vanaf die son na die koringplant en vandaar na Phillip se liggaam oorgedra. Hierdie oordrag is soos wanneer jy pouse ‘n broodjie met jou maatjie sal deel. Jy gee dit mos weg vir hom/haar.

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

Sinne wat by die prentjies pas

Die son gee energie aan die koringplant, wat dan die energie stoor.

Die brood en pap bevat nou die energie van die koring.

Phillip se liggaam neem nou die energie op.

Hy gebruik energie om te oefen.

Om kos gaar te maak deur sonenergie te gebruik

  • Neem ‘n polisterienkoppie en voer dit met plastiek uit en sit kos daarin.
  • Bind die bokant van die koppie toe met ‘n stuk plastiek en bind dit stewig met ‘n rek toe.
  • Neem ‘n A4-stuk papier of karton en sit aluminiumfoelie op die een kant, maak ‘n keëlvorm daarmee en sit dit rondom die koppie met die foelie aan die binnekant. Sny dit netjies.
  • Sit die koppie met die keël in ‘n ander polisterienkoppie en sit dit in ‘n houer om regop te bly; sit sommer koerantpapier rondom om dit te stut.
  • Sit dit nou in die son, en maak seker dat die “oondjie” na die son toe wys”.
  • Los dit so totdat die kos gaar is. Beweeg die pot, sodat dit altyd na die son toe wys.

Questions & Answers

how can chip be made from sand
Eke Reply
are nano particles real
Missy Reply
yeah
Joseph
Hello, if I study Physics teacher in bachelor, can I study Nanotechnology in master?
Lale Reply
no can't
Lohitha
where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
has a lot of application modern world
Kamaluddeen
yes
narayan
what is variations in raman spectra for nanomaterials
Jyoti Reply
ya I also want to know the raman spectra
Bhagvanji
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
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
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
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
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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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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