Structura interna a Pamantului Flashcards

1
Q

Cu ce seamana Pamantul in interior?

A

Cu un ou

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2
Q

Componente:

A
  1. Nucleul (galbenusul) - 50% din raza
  2. Mantaua (albusul), interna si externa
  3. Scoarta (coaja) - Interna si externa
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3
Q

Nucleul

A

miezul Pamantului, aprox 50% din raza
contine Fe si Ni mai ales in interior
este intern si extern
are aprox 5000 grade Celsius
miscare de rotatie - are ca efect efectul de dinam

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4
Q

Efectul de dinam

A

Campul magnetic terestru fara de care Terra nu ar fi putut exista

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5
Q

Mantaua

A

Este interna si externa
numita si mexosfera
grosime = 2900 km
partea externa = astenosfara si este din materia topita, vascoasa = magma care se misca datorita unor curenti circulari

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6
Q

Scoarta terestra

A

= litosfera, 100 km;
2 bucati: interna - bazaltica
externa - granitica
nu este compacta, este alcatuita din placi tectonice

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7
Q

Ocean si pamant

A

mai subtire - in ocean
mai groasa - continentala

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