Composition of the Atmosphere (Leaving Cert Geography): Flashcards
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Atmosphere definition
Atmosphere definition
Mixture of gases surrounding Earth
Nitrogen % of atmosphere
Nitrogen % of atmosphere
78%
Oxygen % of atmosphere
Oxygen % of atmosphere
21%
Argon % of atmosphere
Argon % of atmosphere
0.93%
CO2 % of atmosphere
CO2 % of atmosphere
0.04%
Most abundant atmospheric gas
Most abundant atmospheric gas
Nitrogen
Oxygen's essential role
Oxygen's essential role
Essential for respiration in plants & animals
Argon's chemical property
Argon's chemical property
Chemically inert (noble gas)
CO2's climate role
CO2's climate role
Greenhouse gas that traps heat
CO2 increase since pre-industrial times
CO2 increase since pre-industrial times
Over 40%
Methane's atmospheric role
Methane's atmospheric role
Greenhouse gas (trace gas)
How O2 changes with altitude
How O2 changes with altitude
Decreases at higher altitudes
Combined % of N2 & O2 in atmosphere
Combined % of N2 & O2 in atmosphere
99%
Atmosphere's protective function
Atmosphere's protective function
Filters harmful solar radiation
Earth's temp without greenhouse effect
Earth's temp without greenhouse effect
-18°C (vs current +15°C)