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ID number:247033
 
Author:
Evaluation:
Published: 07.04.2008.
Language: Latvian
Level: Secondary school
Literature: n/a
References: Not used
Extract

Zemeslodes gaisa apvalks.

Atmosfēra ir Zemes gaisa apvalks, kas griežas kopā ar Zemi kā vienots vesels.

Atmosfēra sastāv no gāzu maisījuma, ko sauc par gaisu. Gaisu veido 78% slāpeklis, 21% skābeklis un 1% citu gāzu.

Pirmajos piecos km virs Zemes virsas ir sablīvējusies puse no visas gaisa masas.

Atmosfēra aizsargā Zemi no kosmiskā starojuma un meteorītiem. Atmosfēra neļauj Zemei dienā pārkarst un naktī stipri atdzist.
Atmosfēra nodrošina dažādu procesu norisi dabā.

Atmosfēru iedala troposfērā, stratosfērā un augšējā daļā – jonosfērā.

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