<< Chapter < Page Chapter >> Page >


Die aarde en daarbuite


Opvoeders afdeling


Sedimentêre gesteentes gevorm deur vroeëre lewe

  • Skets: Die soektog na fossielbrandstowwe (olie)


1. Olieboor

2. Oseaan

3. Oseaanvloer

4. Deurdringbare rots

5. Pyplyn

6. Olie

7. Sedimentêre gesteentes

8. Ondeurdringbare rots

Sedimentêre gesteentes:

Lae stene op aardoppervlak en onder water . Gevorm deur puin of deur vroeëre lewe . Puin-tipe vorm deur afbreek van rotse en die stukkies versprei deur wind en water na lae vlakke waar dit sand en modder vorm. Dié van vroeëre lewe vorm deurdat geraamtes saamgepers word om kalksteen te vorm.

Leerder afdeling


Aktiwiteit: om sedimentêre gesteentes as ‘n tipe gesteente te kan bespreek [lu 2.3]

  • Enorme gedeeltes van die aarde word bedek met sedimentêre gesteentes. Hierdie gesteentes vorm nie net op die aardoppervlak nie, maar dikwels ook onder water. Hierdie gesteentes vorm in lae .
  • Wetenskaplikes onderskei tussen twee soorte sedimentêre gesteentes.

Sedimentêre gesteentes gevorm deur puin (“rubble”)

  • Rotse wat reeds bestaan, word afgebreek in klein stukkies deur die werking van die wind en water. Hierdie klein stukkies rots word in strome en riviere afgevoer totdat dit uiteindelik die see bereik. Hier word dit as lae sand en modder neergelaat.

Sedimentêre gesteentes gevorm deur vroeëre lewe

  • Hierdie rots bestaan uit stukkies materiaal van organismes wat vroeër geleef het.
  • Die volgende sketse wys hoe hierdie tipe sedimentêre gesteentes gevorm word:

1. Soos wat visse en ander water-organismes in die see sterf, sak hul oorblyfsels na die bodem.

2. Hul geraamtes en die kalsium in hul skulpe vorm lae op die seebodem.

3. Na verloop van baie jare word die lae saamgepers. Die lae word dik lae rots wat bekend staan as kalksteen.

4. Ons sien hierdie gesteentes die meeste omdat hulle op die aarde se oppervlak gevorm het. Die gesteentes is gewoonlik sag.

  • Sedimentêre gesteentes is belangrik vir die mens, aangesien hulle ons voorsien van olie, aardgas, steenkool en klip vir geboue. Hulle bevat ook soms fossiele wat ons meer leer oor hoe die aarde miljoene jare gelede daar uitgesien het. Later in die module leer ons meer oor fossiele.
  • Voorsien die volgende skets van byskrifte:

Voorsien die volgende skets van byskrifte:

1. ___________________________________________________________________

2. ___________________________________________________________________

3. ___________________________________________________________________

4. ___________________________________________________________________

5. ___________________________________________________________________

6. ___________________________________________________________________

7. ___________________________________________________________________

8. ___________________________________________________________________

  • Beskryf in dertig woorde wat jy onder sedimentêre gesteentes verstaan. Gebruik jou eie woorde.












Leeruitkomste 2: Die leerder ken, interpreteer en pas wetenskaplike, tegnologiese en omgewingskennis toe.

Assesseringstandaard 2.3: Dis duidelik wanneer die leerder inligting interpreteer.

Questions & Answers

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.
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
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
characteristics of micro business
for teaching engĺish at school how nano technology help us
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
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
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.
what is the actual application of fullerenes nowadays?
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.
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.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Berger describes sociologists as concerned with
Mueller Reply
Got questions? Join the online conversation and get instant answers!
QuizOver.com Reply

Get the best Algebra and trigonometry course in your pocket!

Source:  OpenStax, Natuurwetenskappe graad 6. OpenStax CNX. Sep 17, 2009 Download for free at http://cnx.org/content/col11080/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Natuurwetenskappe graad 6' conversation and receive update notifications?