The Atmosphere (Edexcel GCSE Chemistry Combined Science): Flashcards
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Duration of modern atmosphere in current form
Duration of modern atmosphere in current form
Approx. 200 million years
Proportion of nitrogen in atmosphere
Proportion of nitrogen in atmosphere
Almost 80%
Proportion of oxygen in atmosphere
Proportion of oxygen in atmosphere
About 20%
Most abundant gas in atmosphere
Most abundant gas in atmosphere
Nitrogen
Role of oxygen in living organisms
Role of oxygen in living organisms
Crucial for respiration
Definition of trace gases
Definition of trace gases
Gases present in proportions of less than 1%
Example of trace gas: water
Example of trace gas: water
Water vapour ()
Trace gas containing carbon
Trace gas containing carbon
Carbon dioxide ()
Example of trace gases: inert gases
Example of trace gases: inert gases
Noble gases (e.g., argon)
Role of trace gases in climate
Role of trace gases in climate
Climate regulation
Role of trace gases in Earth's temperature
Role of trace gases in Earth's temperature
Maintain greenhouse effect
Stability of atmospheric gas proportions
Stability of atmospheric gas proportions
Remained relatively stable for 200 million years