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Natuurwetenskappe

Planeet aarde en die heelal

Die binneplanete

Opvoeder afdeling

Memorandum

Opdrag 4:

  • Mercurius; Venus; Aarde; Mars; Jupiter; Satarnus; Uranus; Neptunus; Pluto

Opdrag 5:

1. Mercurius

2. Daar is geen suurstof, asook geen water, op Mars nie. Die atmosfeer is ook nie dig genoeg om die skadelike UV-strale uit te hou nie.

3. Venus het amper dieselfde massa en grootte as die aarde.

4. Venus (swawelsuur)

5. Mars se wentelbaan is baie nader aan die son as Neptunus s’n.

6. Die maan.

7. Daar is yster in die grond wat die grond ‘n rooi kleur gee.

8. Genoeg suurstof en water; klimaat geskik vir plantegroei; atmosfeer regte dikte en digtheid. (2)

9. Indien noodseine of bevele gestuur word, bereik dit eers die aarde twee uur later. Die ontvangs is ook soms baie swak.

Totaal: 10

Opdrag 6:

  • Gebruik assesseringsmatriks.

Opdrag 7:

1. Venus en aarde.

2. 150 miljoen km; Dit is die afstand wat die aarde van die son af is en waar ons tans oorleef.

3. Mercurius

4. Venus en Mars; lê weerskante van die aarde; nie te ver of te naby die son nie.

5. Ja. Hoe nader die planete aan die son lê, hoe hoër is die gemiddelde spoed.

6. Moontlik as gevolg van die aantrekkingskrag en energie van die son.

7. 4 minute

24 x 60 minute = 1440 minute (dit neem die aarde 24 uur om sy eie as te roteer)

1 440 minute gedeel deur 360 grade = 4 minute

Opdrag 8.1:

Vrae:

1. Foto’s toon dat daar droë rivierbeddings op Mars is. Al die water het verys en by die pole versamel. Hulle vermoed dat daar groot seë en riviere was. Hierdie water is nou ondergronds.

2. Die gemiddelde temperature was heel moontlik hoër.

3. Mars is verder as die aarde van die son en ontvang dus minder energie van die son. Alhoewel die son ‘n ontsaglike groot bron van energie is, gaan dit ook mettertyd krimp en verswak.

4. ‘n Mens sal baie moeilik en vlak asemhaal en gou sterf, aangesien daar te veel koolstofdioksied in die lug is.

Opdrag 8.2:

Vrae:

1. -60 grade

2. Dag 1: 18:20

Dag 2: 10:45

3. Dag 1: 14:30

-15 grade

4. vanaf 06:00

5. Wanneer daar ‘n stofstorm kom, absorbeer dit die hitte van die son en dit laat temperature styg. Daar is ook baie koolstofdioksied in Mars se atmosfeer en dit kan ook die temperatuur verhoog.

  • Oop antwoorde; enige realistiese verduideliking.

Leerder afdeling

Inhoud

Aktiwiteit: om die planete van ons sonnestelsel te bespreek [lu 1.2, lu 1.3, lu 2.1, lu 2.2, lu 2.3]

  • Mercurius

Dit is die naaste planeet aan die Son. Mercurius het baie kraters op die oppervlak wat veroorsaak is deur asteroïdes wat met die planeet gebots het. Mercurius het nie ‘n atmosfeer of enige mane nie. Die temperatuur by die ewenaar is ongeveer 400 grade Celsius en by die pole is dit –150 grade Celsius.

  • Venus

Venus het wel ‘n atmosfeer van koolstofdioksied en dit is baie digter as dié van die aarde. Sy oppervlakte word verberg deur dik wolke swawelsuur. Temperature op die oppervlakke bereik ongeveer 480 grade Celsius. Venus is ongeveer dieselfde grootte as die aarde en het ook ongeveer dieselfde massa.

  • Aarde

Sover bekend, is die aarde die enigste plek in die Heelal waar daar lewe is. Temperature op die oppervlak wissel van 60 grade Celsius tot –90 grade Celsius. Ongeveer twee derdes van die oppervlak is met vloeibare water bedek.

Questions & Answers

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
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
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Cied
what is biological synthesis of nanoparticles
Sanket Reply
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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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