power point coves
TRANSCRIPT
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LES COVES!Laura Fusté
2ESO B
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PERQUÈ S’UTILITZAVEN?
• Abans les persones vivien en coves, pudien viure temporalment o per sempre.
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Què es una cova?• És una cavitat natural del terreny amb
component horitzontal.
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ESPELEOLOGIA:
• És la ciència que estudia les coves.
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LA FORMACIÓ DE LES COVES• Les coves estan formades per processos
geològics.
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ElS TIPUS DE COVES• COVES PRIMARIES.
• COVES SECUNDARIES: * Coves marines. * Coves de gel. * Coves càrstiques * Coves silícies
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LES COVES PRIMÀRIES• Formades durant l’activitat volcànica.
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COVES MARINES• Son comunes a les diferents costes de tot
el mon.
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COVES DE GEL• Es formen sota una glacera en fondre’s.
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COVES CÀRSTIQUES• Es produeixen en massissos calcaris per
dissolució de la roca.
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COVES SILÍCIES• Estan compostes per quercita o gresos, i es
formen en conjunts rocosos .
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FI