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Natuurwetenskappe

Lewe en lewenswyse

Opvoeders afdeling

Memorandum

  • Sprinkaan:
  • Nee, ja, 6

1. Groot: 2

Klein: 3

1. Groot: 2

Klein: 3

2. Drie

3. Vier

4. Nee. Voorvlerke hard en leeragtig, agterstes sag en kan oopvou, kry groot oppervlak

5. Plastiekagtig, hard

6. Voelers

7. Nee. Daar is asemhalingsopeninge op elke segment van die agterlyf.

8. Ja. Monddele sit onder aan kop. Snyvlakke, en voelers.

9. 6 Pote.

10. Nee. Die agterpote is sterker.

11. Nee. Die wyfie en mannetjie lyk verskillend. By die sprinkaan het die wyfie ‘n lêboor, by die mannetjie is ‘n koppelingsorgaan.

12. Beskerming: harde uitwendige skelet, maar kan met voelers voel. Verloor nie water nie, kan sonder water klaarkom. Kan goed beweeg: loop, soms spring en vlieg. Kan kos soek weens beweegvermoë, kan sien, goeie monddele.

13. Leerder moet van ‘n werklike dier afteken, indien moontlik.

Lewensiklus: volwassene, eiers, larwe, papie

Opdrag 3:

  • Afhanklikheid van water: kan in droë toestande oorleef, kan lewe in omgewings waar daar nie sterk kompetisie van ander diere is nie. Eksoskelet verhoed waterverlies, eet plante wat voldoende water bevat.
  • Verkryging van voedsel: sprinkaan kan vinnig en ver beweeg om voedsel te soek . Eiers kan droë toestande oorleef en broei uit as die grond vogtig word (reën) en daar dus groen plante gaan wees.
  • Insekte met volledige metamorfose: oorleef as papie, die eiers broei uit wanneer voedsel beskikbaar is.
  • Asemhaling: die buisies in die liggaam vervoer die gasse en bly vogtig (droog nie maklik uit soos by die erdwurm nie.
  • Sintuie en kommunikasie: ruik en voel met antenne; het ‘n oordrom op eerste segment van die agterlyf, maak geraas deur die agterpote teen die growwe vlerke te skuur (sprinkaan; ander insekte doen dit anders, maar die belangrike is dat hulle kan kommunikeer).

Leerder afdeling

Inhoud

Aktiwiteit: om die sprinkaan en sy oorlewingsvermoë te ondersoek en te beskryf [lu 1.1, lu 1.2, lu 2.3, lu 2.4]

Die sprinkaan

Die sprinkaan behoort tot die grootste groep in die diereryk, naamlik die insekte .

Wat weet jy al van hierdie groep?

  • Werwelkolom: ja of nee?_____________________________________________
  • Pote: gelit of nie?______________________________________________
  • Getal pote _____________________________________________________

Ondersoek : Vang ‘n paar verskillende insekte en bring hulle saam klas toe. Vorm groepies van twee of drie en bestudeer die insek in die groep waarvan die liggaamsdele maklik onderskei kan word. ‘n Sprinkaan of kriek werk goed. Beantwoord die volgende vrae (probeer jou bes om goeie antwoorde te gee sodat jy ‘n goeie punt kan kry):

1. ‘n Insek het groot sowel as klein oë. Hoeveel oë tel jy?

  • Groot: ___________________________________
  • Klein: ___________________________________

2. In hoeveel hoofdele sou jy die liggaam verdeel? _______________________

3. Hoeveel vlerke het die insek? As die vlerke teen die liggaam gevou is, lig hulle

op en kyk versigtig. ______________________________________

4. Is al die vlerke dieselfde? ___________________________________________

Beskryf. ____________________________________________________________

Questions & Answers

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
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
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
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.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
Got questions? Join the online conversation and get instant answers!
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Source:  OpenStax, Natuurwetenskappe graad 7. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11078/1.1
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