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Aktiwiteit 2:

Om te besin oor noodmaatreëls in vulkaniese gevaargebiede

[lu 2.3]

1. Hoekom besluit mense om te woon in gebiede waar daar vulkaniese uitbarstings voorkom ? Dink goed hieroor na en gee dan jou opinie.

2. Verbeel jou jy bly in ‘n area waar daar vulkaniese uitbarsting voorkom. Stel ‘n lys met noodmaatreëls op wat in werking gestel moet word voor, tydens en na ‘n uitbarsting.

3. Versamel koerantberigte oor enige onlangse vulkaniese uitbarsting. Hou klasbesprekings daaroor en noem die gevolge wat dit gehad het.

4. Watter hulp is deur die eerstewêreldlande aan hierdie mense gebied? Kon meer gedoen word?

Interessante feit

Die ontsaglike krag wat in ons aarde se ingewande voorkom, laat ‘n mens eintlik bang word en laat jou aan die dood en verwoesting wat dit saai, dink.

Kom ons sluit egter positief af. Dalk kan ons nog eendag dié kragte inspan vir ‘n geriefliker lewe op aarde. Ons kan dalk maniere vind om hierdie krag te tem en elektrisiteit daarmee op te wek. Dink aan die impak wat so ‘n nuwe energiebron op ons bestaan kan hê!

‘n Webblad soos die volgende bevat nogal interessante inligting oor vulkane:

(External Link)

Assessering

Leeruitkomstes(LUs)
LU 2
AARDRYKSKUNDIGE KENNIS EN BEGRIPDie leerder is in staat om aardrykskundige en omgewingskennis en -begrip te toon.
Assesseringstandaarde(ASe)
Dit is duidelik wanneer die leerder:
2.1 beskryf en verduidelik hoe natuurgevare soos vulkane, aardbewings en oorstromings plaasvind, en die uitwerking daarvan op menselewens en op sosio-ekonomiese bedrywighede [mense en plekke];2.2 ondersoek en verduidelik waarom sommige mense meer as ander aan natuurgevare blootgestel is [mense en hulpbronne];2.3 identifiseer hoe risiko’s en natuurgevare hanteer kan word [mense en omgewing].

Memorandum

Aktiwiteit 1:

1. a) Die mens

  • Lawa verteer en /of laat huise en stede verkrummel.
  • Mense word deur die lawa verswelg.
  • Ander word deur die verstikkende swaelgasse en asreën verswelg en versmoor.
  • Mense verdrink as gevolg van tsoenami’s wat oor laagliggende gebiede ingespoel word.

b) Die natuur

  • Die natuurlike omgewing word geheel en al verwoes of verander deur ‘n vulkaan.
  • Rotse en as wat die lug ingeslinger word, veroorsaak lugbesoedeling.
  • Lawa vloei oor vrugbare valleie en verteer alle plantegroei.
  • Vuurwarm modderstrome verswelg stede en mense.
  • Tsoenami’s ontstaan in die see en kan laagliggende gebiede en eilande oorstroom.
  • Nuwe eilande ontstaan as gevolg van vulkaanuitbarstings onder die see.
  • Die natuurlike omgewing word omskep in iets nuuts. Stollingsgesteentes ontstaan, wat oor miljoene jare baie vrugbare grond vorm vir voedselproduksie.
  • Edelgesteentes word in stollingsgesteentes gevorm, soos diamante. Dit kan groot finansiële implikasies vir ‘n land inhou.
  • Warmwaterbronne is volop naby vulkane en lok toeriste. Die warm water word ook vir verhitting van geboue aangewend.

2. Leerders bring foto’s, prentjies en uitknipsels van vulkane na die klaskamer. Hou ‘n klasbespreking en vul aantekeninge aan.

Aktiwiteit 2:

1. Mense neem ‘n bewuste besluit om naby ‘n vulkaan te bly.

Ekonomiese oorwegings soos werkvoorsiening en finansiële welvaart tel baie keer meer as die potensiële gevaar van ‘n nabygeleë vulkaan.

2. a) Voor ‘n vulkaniese uitbarsting

  • Vulkane word deur seismograwe gemonitor en waarskuwings word uitgereik.
  • Areas moet ontruim word, indien voortekens voorkom.
  • Mense woonagtig in sulke areas moet altyd sorg dat hul noodvoorrade byderhand het.

b) Tydens ‘n vulkaniese uitbarsting

  • Mense moet so vinnig as moontlik uit die area wegkom.
  • Luister gedurig na nuusberigte sodat die verloop van die uitbarsting gevolg kan word.
  • Dra gasmaskers as beskerming teen swaelgasse.

c) Na ‘n vulkaniese uitbarsting

  • Opruiming van die area moet geskied en hulpverskaffing moet verleen word deur eerstewêreldlande.

3. Versamel koerantberigte oor enige onlangse vulkaniese uitbarsting en hou ‘n klasbespreking.

4. Eerstewêreldlande verleen finansiële hulp na so ‘n ramp.

Hulle stuur ook so spoedig moontlik noodspanne om te help met opruiming, mediese dienste en voedselvoorsiening.

Questions & Answers

how does Neisseria cause meningitis
Nyibol Reply
what is microbiologist
Muhammad Reply
what is errata
Muhammad
is the branch of biology that deals with the study of microorganisms.
Ntefuni Reply
What is microbiology
Mercy Reply
studies of microbes
Louisiaste
when we takee the specimen which lumbar,spin,
Ziyad Reply
How bacteria create energy to survive?
Muhamad Reply
Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
_Adnan
But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Muhamad
they make spores
Louisiaste
what is sporadic nd endemic, epidemic
Aminu Reply
the significance of food webs for disease transmission
Abreham
food webs brings about an infection as an individual depends on number of diseased foods or carriers dully.
Mark
explain assimilatory nitrate reduction
Esinniobiwa Reply
Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
Elkana
Examples of thermophilic organisms
Shu Reply
Give Examples of thermophilic organisms
Shu
advantages of normal Flora to the host
Micheal Reply
Prevent foreign microbes to the host
Abubakar
they provide healthier benefits to their hosts
ayesha
They are friends to host only when Host immune system is strong and become enemies when the host immune system is weakened . very bad relationship!
Mark
what is cell
faisal Reply
cell is the smallest unit of life
Fauziya
cell is the smallest unit of life
Akanni
ok
Innocent
cell is the structural and functional unit of life
Hasan
is the fundamental units of Life
Musa
what are emergency diseases
Micheal Reply
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
_Adnan
define infection ,prevention and control
Innocent
I think infection prevention and control is the avoidance of all things we do that gives out break of infections and promotion of health practices that promote life
Lubega
Heyy Lubega hussein where are u from?
_Adnan
en français
Adama
which site have a normal flora
ESTHER Reply
Many sites of the body have it Skin Nasal cavity Oral cavity Gastro intestinal tract
Safaa
skin
Asiina
skin,Oral,Nasal,GIt
Sadik
How can Commensal can Bacteria change into pathogen?
Sadik
How can Commensal Bacteria change into pathogen?
Sadik
all
Tesfaye
by fussion
Asiina
what are the advantages of normal Flora to the host
Micheal
what are the ways of control and prevention of nosocomial infection in the hospital
Micheal
what is inflammation
Shelly Reply
part of a tissue or an organ being wounded or bruised.
Wilfred
what term is used to name and classify microorganisms?
Micheal Reply
Binomial nomenclature
adeolu
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Source:  OpenStax, Aardrykskunde graad 7. OpenStax CNX. Sep 09, 2009 Download for free at http://cnx.org/content/col11020/1.1
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