Earth's Early Atmosphere (OCR GCSE Chemistry A (Gateway Science Suite)): Flashcards
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How long has modern atmosphere been stable?
How long has modern atmosphere been stable?
200 million years
What did Earth's early atmosphere resemble?
What did Earth's early atmosphere resemble?
Venus or Mars today
Timeframe of Earth's early volcanic activity?
Timeframe of Earth's early volcanic activity?
First billion years
What released gases into early atmosphere?
What released gases into early atmosphere?
Volcanoes that erupted frequently
Primary gas in Earth's early atmosphere
Primary gas in Earth's early atmosphere
Carbon dioxide ()
Oxygen level in early atmosphere
Oxygen level in early atmosphere
Very little to no oxygen
Gas in early atmosphere:
Gas in early atmosphere:
Water vapour
Gas in early atmosphere:
Gas in early atmosphere:
Methane
Gas in early atmosphere:
Gas in early atmosphere:
Ammonia
How was released into early atmosphere?
How was released into early atmosphere?
By volcanic activity
How long did Earth take to cool?
How long did Earth take to cool?
Millions of years
What formed as water vapour condensed?
What formed as water vapour condensed?
Oceans and seas