WorksheetsChemistry of the Atmosphere
Total questions: 8
Worksheet time: 4mins
What's the most common gas in today's atmosphere?
Oxygen
Nitrogen
Carbon dioxide
What percentage of our current atmosphere is nitrogen?
100%
78%
28%
In the early atmosphere what was the most common gas?
Oxygen
Carbon dioxide
Nitrogen
Why did oxygen levels begin to increase in the atmosphere?
Photosynthesis produces oxygen
The water condensed
There were volcanoes
Why did carbon dioxide levels in the atmosphere decrease?
Volcanoes released CO2
The oceans absorbed CO2
Animals evolved to do respiration
What gas is taken in for photosynthesis?
Oxygen
Carbon dioxide
Nitrogen
The average temperature on Earth has done what over the past 4 billion years?
decreased
increased
stayed the same
Now when we burn fossil fuels they release CO2 which causes...
volcanoes to erupt
earthquakes
global warming
