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As die deursnit van die son in die notasie 1,5 x 10 6 geskryf word, hoe sou jy die AU se notasie skryf?

5. Wat is die deursnit van ons sterrestelsel dus?

Assessering van berekeninge:

Was jou berekenings korrek?

[LU 2.4]

Het jy geweet?

Die grootste struktuur in die heelal is bekend as “the great wall” – ’n kombers van sterrestelsels wat 500 miljoen ligjare lank en 16 miljoen ligjare dik is.

  • Ons sterrestelsel is een van biljoene sulke reusestergroepe of sterrestelsels! Dit is maar sover ons met ons grootste en sensitiefste teleskope kon vasstel.
  • Die naaste volgende sterrestelsel aan ons is die ANDROMEDA- sterrestelsel. So ’n sterrestelsel bestaan uit groepe of bondels sterre.
  • Tussenin is daar reusewolke van gas en partikels wat ons nebulae noem. Hulle is die geboorteplekke van sterre.
  • Die teorie is dat ’n warm wolk gasse – die solar nebula - vier en ’n half biljoen jaar gelede om ’n nuutgevormde son gedraai en begin afkoel het. Tydens die afkoeling is biljoene druppeltjies gevorm wat aan mekaar begin vaskleef het. So is planete gevorm.
  • Dit het egter nog ’n halfbiljoen jaar geneem om genoegsaam af te koel en ’n kors te vorm.

Aktiwiteit 4:

Om definisies neer te skryf

1. ’n Ligjaar is

2. Die Melkweg is

3. Die Andromeda is

4. ’n Nebula is

5. Die rede vir die gebruik van eenhede soos ligjare en AU is

Assessering van definisies:

Was jou definisies korrek?

[LU 2.4]

Assessering

LU 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.

Dit word bewys as die leerder:

1.1 ondersoeke beplan;

1.2 ondersoeke uitvoer en data versamel;

1.3 data evalueer en bevindinge kommunikeer.

LU 2

Konstruksie van Wetenskapkennis

Die leerder ken, interpreteer en pas wetenskaplike, tegnologiese en omgewings- kennis toe.

Dit word bewys as die leerder:

2.1 betekenisvolle inligting kan oproep;

2.2 inligting kan kategoriseer;

2.3 inligting kan interpreteer;

2.4 kennis kan toepas.

LU 3

Wetenskap, die Gemeenskap en die Omgewing

Die leerder is in staat om begrip van die onderlinge verband tussen wetenskap en tegnologie, die samelewing en die omgewing te toon.

Dit word bewys as die leerder:

3.1 wetenskap as ’n menslike aktiwiteit verstaan;

3.2 die volhoubare gebruik van die aarde se hulpbronne verstaan.

Memorandum

AKTIWITEIT: VRAE

1. geen materie – een balletjie kleiner as ’n atoom; daarna ’n brousel van deeltjies en kragte

2. superkrag waarmee kleiner balletjie in materie uitgebars het

3. ’n klomp kwarks was saamgepers om waterstof te vorm

4. ’n subatomiese partikel

5. a) He-atome se samevoeging

b) C-atome onder hewige temperature

6. Swaartekrag, elektromagnete, sterk kernkragte en swak kernkragte

7. teenoorgestelde van materie – kanselleer materie uit

AKTIWITEIT: BEREKENING

1. 10 miljoen miljoen kilometer

2. ongeveer 2 biljoen

3. 10 18

4. 150 x10 6

5. 100 000 x 300 000

AKTIWITEIT: DEFINISIES

1. die afstand wat lig in een aardse jaar aflê teen ’n snelheid van 300 000 km.s -1

2. versameling van biljoene sterre waarvan ons son een is

3. naaste volgende sterrestelsel

4. reuse gaswolke tussen sterrestelsels

5. om getal denkbaar te maak

Questions & Answers

where we get a research paper on Nano chemistry....?
Maira Reply
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
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
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
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
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Miggie Reply

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Source:  OpenStax, Natuurwetenskappe graad 9. OpenStax CNX. Sep 15, 2009 Download for free at http://cnx.org/content/col11068/1.1
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