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Sumario LA TIERRA BIOLOGÍA EXAMEN 4 ESO DIVER

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LA TIERRA BIOLOGÍA EXAMEN 4 ESO DIVER

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1. ORIGEN DE LA VIDA EN LA TIERRA

a) Nombra solo las hipótesis sobre el origen de la vida.


Generación espontánea:
Vida surge porque sí, a partir de materia

Panspermia:
A partir de restos de meteoritos

Sopa primordial de oparin:
A partir de mezcla de gases y radiaciones eléctricas y solares

Fuentes hidrotermales
La aceptada actualmente
Vida origen en fondo océano




b) Explica la que es la aceptada actualmente.

Fuentes Hidrotermales:

La vida pudo originarse en el fondo de océanos

cerca de fuentes hidrotermales.




2. ESTRUCTURA INTERNA DE LA TIERRA.

a) ¿Qué métodos de estudios se utilizan?

Métodos directos e indirectos:

●​ Directos: estudio de materiales obtenidos en minas, meteoritos y volcanes.​

●​ Indirectos: estudio de las ondas sísmicas, campo magnético y flujo de calor.​


b) ¿Cuál es el más utilizado?

El método sísmico, estudio de las ondas sísmicas que generan los terremotos

, c) ¿Qué son las ondas P y S?

●​ Ondas P (primarias):

Son rápidas

Se propagan por los tres medios: sólidos, líquidos y gases.

son longitudinales


●​ Ondas S (secundarias):

Son lentas

Solo se propagan por sólidos

Son transversales




d) Completa la gráfica

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May 9, 2026
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