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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

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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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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