Summary
Samenvatting Geofysica
- Course
- Institution
Dit vak heette in 2013 nog Geofysica. Nu heet het Geologie. De inhoud is echter niet veranderd en is nog up to date.
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Samenvatting GeofysicaOpbouw van de aarde
- aardkorst
- aardmantel
- buiten kern
- binnen kern
samenstelling:
Kern Ijzer, nikkel, uranium
Aardmantel Silica, magnesiumoxide, ijzeroxide
Aardkorst Diverse elementen
Aardmagnetisme:
Oorzaak: door wrijving/stromingen van vloeibaar ijzer in de aarde
Gevolg: de stromingen zijn het gevolg van convectie en draaing van de
aarde
Isostatisch evenwicht
, voorbeelden van verstoringen door isostatisch evenwich:
- afzetting van sedimenten
- erosie van gebergten
- opbouw van gletsjerijs
- afsmelten van gletsjerijs
temperatuur gradient:
waarom is het zo warm in de kern?
Uranium -> Lood + energie (warmte)
Waarom is ijzer en nikkel in de kern vast?
Door de hoge druk
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