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Summary Graad 8 Natuurwetenskappe (NW) Opsommings - Kwartaal 3 (Kollig Op)

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Graad 8 Natuurwetenskappe (NW) Opsommings Kwartaal 3: Die opsommings is saamgestel deur die Kollig Op handboek se werk op te som. Kwartaal 3:  Energie en Verandering * Module 7:  Statiese elektrisiteit * Module 8:  Energie-oordrag in elektriese stelsels * Module 9:  Serie- en parallelle stroombane * Module 10:  Sigbare lig

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, Elektriese kragvelde Wat is statiese elektrisiteit?
• 'n Elektriese kragveld omring elke deeltjie met 'n • Sommige buitenste elektrone word swak na die
elektriese lading kern aangetrek en kan van een atoom na 'n
• Die sterkte van die veld hang af van die hoeveelheid ander beweeg.
lading, afstand en vorm van voorwerpe. • 'n Atoom wat elektrone verloor, het 'n meer
• Voorwerpe ver uitmekaar ervaar minder krag. positiewe lading (protone) as negatiewe lading
• Elektriese krag - dui die hoeveelheid aantrekkings- (elektrone)
/afstotingskrag aan. • 'n Atoom wat elektrone bykry, het meer
• . negatiewe deeltjies as positiewe deeltjies
• . • Beginsel van die Bewaring van Lading - lading
• word nooit geskep/vernietig nie.
M7: Statiese

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• • Ongelyke ladings trek mekaar aan.
Vonke in statiese elektrisiteit • .
elektrisiteit
• 'n Vrystelling veroorsaak vonke van statiese •
elektrisiteit. •
• Vonke word gesien wanneer negatiewe
ladings na geleiers oorgedra word.


• .


Summaries after sample
• Vonke kom slegs voor as daar 'n lugopening
tussen die voorwerpe is.



Gevare van statiese
elektrisiteit by vulstasies
• Petrolwalms in die lug kan ontbrand en 'n
brand veroorsaak.
• .
• Gevaar van statiese

elektrisiteit in donderstorms
• Deeltjies in wolke vryf teen mekaar – skei elektrone.
• Negatiewe ladings bou op en die elektrone word van
die wolk na die grond ontlaai.
• .

K3-M7 Kollig Op Kopiereg © www.summariessa.co.za (DO NOT COPY)
GR8 NW Breinkaart


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