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aardrijkskunde kerst

thema 4

TermDefinition
uitdijen uitzetten, groter worden, expanderen
big bang oerknal
kritische massadichtheid de minimale materie die in zijn bestaande ruimte nodig moet zijn om met zijn zwaartekracht het heelal samen te houden
donkere materie materie die we niet kunnen waarnemen via elektromagnetische stralen maar wel door afwijkingen in de zwaartekracht
donkere energie een onbekende afstotende kracht die de uitdijing van het heelal versnelt
schilvormige opbouw van de aarde gelaagde structuur van de aarde
protoplaneet voorloper van een planeet
kernfusie het samenvoegen van de kernen van twee atomen tot een nieuw atoom. bij een kernfusie komt er energie bij
zonnevel een gas- en stofwolk die door de explosie van een ster gevormd werd
gasreus een zeer grote planeet die voornamelijk uit gassen bestaat
Created by: user-2007947
 

 



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