the earth's early atmosphere Flashcards
1
Q
what are the 3 main things the atmosphere is made of?
A
oxygen, carbon dioxide and nitrogen
2
Q
what are the trace amounts in the atmosphere?
A
small amounts of argon, water vapour and methane
3
Q
where did the gases that formed the earth’s early atmosphere come from?
A
volcanic eruptions (mainly CO2, no oxygen)
4
Q
what planets were the earth’s early atmosphere similar to?
A
mars and venus
5
Q
describe the earth’s early atmosphere
A
very hot, molten, no oceans
6
Q
how did oceans start to form?
A
the water vapour condensed
