<< Chapter < Page Chapter >> Page >

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

Discuss the differences between taste and flavor, including how other sensory inputs contribute to our  perception of flavor.
John Reply
taste refers to your understanding of the flavor . while flavor one The other hand is refers to sort of just a blend things.
Faith
While taste primarily relies on our taste buds, flavor involves a complex interplay between taste and aroma
Kamara
which drugs can we use for ulcers
Ummi Reply
omeprazole
Kamara
what
Renee
what is this
Renee
is a drug
Kamara
of anti-ulcer
Kamara
Omeprazole Cimetidine / Tagament For the complicated once ulcer - kit
Patrick
what is the function of lymphatic system
Nency Reply
Not really sure
Eli
to drain extracellular fluid all over the body.
asegid
The lymphatic system plays several crucial roles in the human body, functioning as a key component of the immune system and contributing to the maintenance of fluid balance. Its main functions include: 1. Immune Response: The lymphatic system produces and transports lymphocytes, which are a type of
asegid
to transport fluids fats proteins and lymphocytes to the blood stream as lymph
Adama
what is anatomy
Oyindarmola Reply
Anatomy is the identification and description of the structures of living things
Kamara
what's the difference between anatomy and physiology
Oyerinde Reply
Anatomy is the study of the structure of the body, while physiology is the study of the function of the body. Anatomy looks at the body's organs and systems, while physiology looks at how those organs and systems work together to keep the body functioning.
AI-Robot
what is enzymes all about?
Mohammed Reply
Enzymes are proteins that help speed up chemical reactions in our bodies. Enzymes are essential for digestion, liver function and much more. Too much or too little of a certain enzyme can cause health problems
Kamara
yes
Prince
how does the stomach protect itself from the damaging effects of HCl
Wulku Reply
little girl okay how does the stomach protect itself from the damaging effect of HCL
Wulku
it is because of the enzyme that the stomach produce that help the stomach from the damaging effect of HCL
Kamara
function of digestive system
Ali Reply
function of digestive
Ali
the diagram of the lungs
Adaeze Reply
what is the normal body temperature
Diya Reply
37 degrees selcius
Xolo
37°c
Stephanie
please why 37 degree selcius normal temperature
Mark
36.5
Simon
37°c
Iyogho
the normal temperature is 37°c or 98.6 °Fahrenheit is important for maintaining the homeostasis in the body the body regular this temperature through the process called thermoregulation which involves brain skin muscle and other organ working together to maintain stable internal temperature
Stephanie
37A c
Wulku
what is anaemia
Diya Reply
anaemia is the decrease in RBC count hemoglobin count and PVC count
Eniola
what is the pH of the vagina
Diya Reply
how does Lysin attack pathogens
Diya
acid
Mary
I information on anatomy position and digestive system and there enzyme
Elisha Reply
anatomy of the female external genitalia
Muhammad Reply
Organ Systems Of The Human Body (Continued) Organ Systems Of The Human Body (Continued)
Theophilus Reply
what's lochia albra
Kizito
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get Jobilize Job Search Mobile App in your pocket Now!

Get it on Google Play Download on the App Store Now




Source:  OpenStax, Natuurwetenskappe graad 7. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11078/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Natuurwetenskappe graad 7' conversation and receive update notifications?

Ask