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Hoekom veroorsaak tropiese siklone meer vloedskade, maar rig betreklik min stormwindskade aan gebiede aan? Wat word met die “oog” van ‘n tropiese sikloon bedoel?

1.3 Hoekom sommige mense ‘n hoër risiko as ander is

In die ontwikkelde dele van die wêreld rig tropiese siklone ook baie skade aan, maar dit is gewoonlik nie so rampspoedig nie. Kommunikasiestelsels is goed ontwikkeld en ‘n baie hoë persentasie van die bevolking word bewus gemaak van die naderende gevaar. Hulle kan dus betyds voorsorg tref of die area verlaat. Ook is die konstruksie van hul huise en ander geboue van so ‘n aard dat dit meestal die storms kan weerstaan.

In die ontwikkelende areas van die wêreld kan ‘n tropiese sikloon egter geweldige skade veroorsaak. Eerstens is die areas gewoonlik baie dig bevolk en geweldige lewensverliese kan ondervind word omdat meeste van die mense ook in die minder goeie of gevaarliker areas woonagtig is. Tweedens is hul huise ook van ‘n swak konstruksie en word erg beskadig en selfs vernietig tydens so ‘n storm. Derdens het die areas ook nie ‘n goeie infrastruktuur wat die uitwerking van so ‘n ramp kan beperk of verminder nie. Gesondheidsorg en nooddienste kan nie vinnig genoeg by die mense uitkom nie. 'n Groot gedeelte van die sterftes wat voorkom, geskied eerder na die storm as daartydens.

Aktiwiteit 2:

Om die gevolge van siklone op menselewens te bekyk

[lu 2.1, 2.3]

1.4 Voorkomende maatreëls: die bestuur van gevare en gevaarvermindering

Hoewel wetenskaplikes oor ‘n groot hoeveelheid kennis omtrent tropiese siklone beskik, kan daar eintlik baie min gedoen word om die skade te voorkom wat daardeur aangerig word.

Tog is daar dinge wat gedoen kan word om die skade ietwat te verminder:

Vroeë waarskuwingstelsels van satelliete, radar en data van weerstasies word gebruik om die nadering van ‘n tropiese sikloon te voorspel.

Wolkbesaaiing, ‘n proses wat die energie van die sikloon versprei en die windsnelheid verlaag, is redelik suksesvol.

Beperking van die skade wat dit aanrig. Dit is sekerlik die beste manier om ‘n storm te hanteer. Tipiese voorsorgmaatreëls sluit die volgende in

  • Hortjies, vensters en deure word toegespyker.
  • Alle los voorwerpe word weggepak of aan swaar meubels en bome vasgebind sodat dit nie kan wegwaai nie. Rondvlieënde voorwerpe rig gewoonlik baie skade aan en kan mense se dood veroorsaak.
  • Sandsakke word opgestapel in gebiede waar oorstromings verwag word om die grootste impak van die oorstroming te stuit.
  • Ontruiming van mense en hulle besittings uit die area.

Aktiwiteit 3:

Om planne te beraam om mense in ‘n rampgebied te help

[lu 2.3]

1. Jy is die leier van ‘n noodleningspan wat deur die Rooikruis na ‘n tropiese sikloon-rampgebied gestuur word. Beraam ‘n plan om die mense wat geraak is te help. Watter maatreëls sal jy eerste tref? Hoeveel tyd sal jou reddingsoperasie in beslag neem?

2. Watter voorsorgmaatreëls kan getref word om die uitwerking van tropiese siklone tot die minimum te beperk? Bestudeer die Amerikaanse Weerburo se sikloon-waarskuwingsplakkaat hiernaas om jou te help met jou antwoorde.

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].

Questions & Answers

Three charges q_{1}=+3\mu C, q_{2}=+6\mu C and q_{3}=+8\mu C are located at (2,0)m (0,0)m and (0,3) coordinates respectively. Find the magnitude and direction acted upon q_{2} by the two other charges.Draw the correct graphical illustration of the problem above showing the direction of all forces.
Kate Reply
To solve this problem, we need to first find the net force acting on charge q_{2}. The magnitude of the force exerted by q_{1} on q_{2} is given by F=\frac{kq_{1}q_{2}}{r^{2}} where k is the Coulomb constant, q_{1} and q_{2} are the charges of the particles, and r is the distance between them.
Muhammed
What is the direction and net electric force on q_{1}= 5µC located at (0,4)r due to charges q_{2}=7mu located at (0,0)m and q_{3}=3\mu C located at (4,0)m?
Kate Reply
what is the change in momentum of a body?
Eunice Reply
what is a capacitor?
Raymond Reply
Capacitor is a separation of opposite charges using an insulator of very small dimension between them. Capacitor is used for allowing an AC (alternating current) to pass while a DC (direct current) is blocked.
Gautam
A motor travelling at 72km/m on sighting a stop sign applying the breaks such that under constant deaccelerate in the meters of 50 metres what is the magnitude of the accelerate
Maria Reply
please solve
Sharon
8m/s²
Aishat
What is Thermodynamics
Muordit
velocity can be 72 km/h in question. 72 km/h=20 m/s, v^2=2.a.x , 20^2=2.a.50, a=4 m/s^2.
Mehmet
A boat travels due east at a speed of 40meter per seconds across a river flowing due south at 30meter per seconds. what is the resultant speed of the boat
Saheed Reply
50 m/s due south east
Someone
which has a higher temperature, 1cup of boiling water or 1teapot of boiling water which can transfer more heat 1cup of boiling water or 1 teapot of boiling water explain your . answer
Ramon Reply
I believe temperature being an intensive property does not change for any amount of boiling water whereas heat being an extensive property changes with amount/size of the system.
Someone
Scratch that
Someone
temperature for any amount of water to boil at ntp is 100⁰C (it is a state function and and intensive property) and it depends both will give same amount of heat because the surface available for heat transfer is greater in case of the kettle as well as the heat stored in it but if you talk.....
Someone
about the amount of heat stored in the system then in that case since the mass of water in the kettle is greater so more energy is required to raise the temperature b/c more molecules of water are present in the kettle
Someone
definitely of physics
Haryormhidey Reply
how many start and codon
Esrael Reply
what is field
Felix Reply
physics, biology and chemistry this is my Field
ALIYU
field is a region of space under the influence of some physical properties
Collete
what is ogarnic chemistry
WISDOM Reply
determine the slope giving that 3y+ 2x-14=0
WISDOM
Another formula for Acceleration
Belty Reply
a=v/t. a=f/m a
IHUMA
innocent
Adah
pratica A on solution of hydro chloric acid,B is a solution containing 0.5000 mole ofsodium chlorid per dm³,put A in the burret and titrate 20.00 or 25.00cm³ portion of B using melting orange as the indicator. record the deside of your burret tabulate the burret reading and calculate the average volume of acid used?
Nassze Reply
how do lnternal energy measures
Esrael
Two bodies attract each other electrically. Do they both have to be charged? Answer the same question if the bodies repel one another.
JALLAH Reply
No. According to Isac Newtons law. this two bodies maybe you and the wall beside you. Attracting depends on the mass och each body and distance between them.
Dlovan
Are you really asking if two bodies have to be charged to be influenced by Coulombs Law?
Robert
like charges repel while unlike charges atttact
Raymond
What is specific heat capacity
Destiny Reply
Specific heat capacity is a measure of the amount of energy required to raise the temperature of a substance by one degree Celsius (or Kelvin). It is measured in Joules per kilogram per degree Celsius (J/kg°C).
AI-Robot
specific heat capacity is the amount of energy needed to raise the temperature of a substance by one degree Celsius or kelvin
ROKEEB
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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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