chemistry - atmosphere Flashcards
(6 cards)
1
Q
What were the three main gases found in the Earth’s early atmosphere?
A
Water vapour, Carbon dioxide and Nitrogen
2
Q
How was Carbon Dioxide reduced in Earth’s early atmosphere?
A
It was dissolved into the oceans
3
Q
How was Earth’s early atmosphere formed?
A
Gases released by volcanoes
4
Q
How were the oceans formed?
A
The condensation of water vapour
5
Q
What was one of the ways oxygen increased in the atmosphere?
A
Primitive plants photosynthesised, meaning that carbon dioxide levels decreased and oxygen levels increased
6
Q
Explain the Greenhouse effect.
A
The greenhouse effect is when gases such as carbon dioxide, methane and water vapour absorb heat radiating from the Earth, consequently warming it up.
