Summary Graad 7_SW : Geografie / Aardrykskunde [Kwartaal 2]_Opsommings

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Summary Graad 7_SW : Geografie / Aardrykskunde [Kwartaal 2]_Opsommings

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Hierdie Kwartaal 2 Sosiale Wetenskappe Aardrykskunde / Geografie -opsommings is ’n lewensredder vir Graad 7-leerders (en hul onderwysers)! Die inhoud is duidelik uiteengesit, kleurvol gestruktureer en volledig CAPS-belyn – perfek vir eksamenvoorbereiding, vinnige hersiening of klasgebruik. Ingesluit: Ingesluit: Aarde & Plate → strukture, kors, mantel, kern Vulkane → tipes, uitbarstings, gevare Aardbewings → oorsake, gevolge, voorbereiding Oorstromings → natuurlike & menslike faktore, impak, veiligheid Perfek vir vinnige hersiening & eksamenvoorbereiding CAPS-gelyk | Kleurvol | Visueel PDF – drukbaar of gebruik digitaal Laat kaarte klik — sonder die kopkrap!

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1
Graad 7 SW [Geografie] І www.notedsummaries.co.za

, geoloog

3 HOOFDELE KORS = BEWEEG
HOE? (Plaattektoniek)
aarde se kors = groot legkaartstukke ( 7 tektoniese plate) → op die mantel
→ plate beweeg stadig = +- 1 tot 10 cm p/jaar.
Moho
⊗ 🌋 Vulkane → bars wanneer magma opstoot
by plaatgrense.
⊗ 🌍 Aardbewings → gebeur as plate skielik
skuif.
⊗ 🏔️ Berge → vorm waar plate teen mekaar
deursnee → ± 12 700 km druk (bv. Himalayas).
DIVERGEREND weg van mekaar → nuwe kors vorm (soos
→ Buite laag
KORS → Dun(STE) en hard → 5-70 km dik "nuwe vel" by oseaanvloere).
→ Onder see = dun (oseaankors) → 10km Voorbeeld: Mid-Atlantiese Rif.
→ Onder berge = dik (kontinentale kors) → 35-70km
→ Moho = grens tussen kors en die mantel Konvergerend bots teen mekaar → druk en vou → berge of
→ Middelste laag = taai, warm + 2 900 km dik
MANTEL → Boonste deel = hard
vulkane
→ Onderste deel = sag en half-gesmelt (magma) Voorbeeld: Himalaya-berge.
→ Hitte in mantel = konveksiestrome (rots vloei stadig →
laat plate beweeg) Transformerend (skuif verby mekaar)
→ 3 400 km dik Groot spanning bou op → skielike ruk =
KERN → Binnekern = solied (baie warm en onder groot druk, aardbewing.
2 5 000-6 000 °C).
→ Buitekern = vloeibaar (ysterGraad 7 SW [Geografie] І www.notedsummaries.co.za
en nikkel) Voorbeeld: San Andreas-fout Kalifornië.

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Schooljaar: 200
Uploaded on: August 24, 2025
Number of pages: 9
Written in: 2025/2026
Type: Summary

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