Earth's Atmosphere Quiz

What is the primary gas in the Earth's atmosphere by proportion?

• Oxygen

• Carbon dioxide

• Nitrogen

• Ozone

What is the proportion of oxygen in the Earth's atmosphere?

• 78%

• 21%

• 0.04%

• 1%

Which gas has the smallest proportion in the Earth's atmosphere according to the table?

• Nitrogen

• Oxygen

• Carbon dioxide

• Ozone

What term is used to describe the state of balance that maintains the average composition of the atmosphere?

• Static equilibrium

• Dynamic equilibrium

• Chemical equilibrium

• Thermal equilibrium

Which processes are fundamental in maintaining the dynamic equilibrium of the atmosphere?

• Photosynthesis and aerobic respiration

• Evaporation and condensation

• Combustion and photosynthesis

• Aerobic respiration and combustion

What does the term "dynamic equilibrium" refer to in the context of the atmosphere?

• A state where the composition of the atmosphere changes rapidly

• A state where the composition of the atmosphere remains constant

• A state where the composition of the atmosphere changes slowly over long timescales

• A state where the composition of the atmosphere is unpredictable

What is the combined proportion of rare gases in the atmosphere?

What is the proportion of carbon dioxide in the Earth's atmosphere?

What does the graph titled "Daily fluctuations in CO₂ concentrations" illustrate?

• Changes in CO₂ concentrations over a year

• Changes in CO₂ concentrations over a day

• Changes in CO₂ concentrations over a month

• Changes in CO₂ concentrations over a decade

What does the graph titled "Annual fluctuations in CO₂ concentrations" illustrate?

• Changes in CO₂ concentrations over a year

• Changes in CO₂ concentrations over a day

• Changes in CO₂ concentrations over a month

• Changes in CO₂ concentrations over a decade