30 Questions
Which layer of the atmosphere is known as the ionosphere?
Thermosphere
In which layer of the atmosphere do temperatures often reach 2000 degrees Celsius or more?
Thermosphere
Which layer of the atmosphere extends from the upper limit of the thermosphere into space?
Exosphere
What is the main reason for the extremely low density in the exosphere?
Lack of gravitational force
Which layer of the atmosphere contains the layer where compression results in denser air near the base?
Troposphere
What is the consequence of compressibility that leads to a nonlinear trend in both pressure and atmospheric density with altitude?
Change in air density
What is the primary role of the ozone layer in the stratosphere?
Absorbing harmful UV radiation from the Sun
Why do airplanes and weather balloons often fly in the lower part of the stratosphere?
For its stability and lack of weather disturbances
Which layer of the atmosphere is responsible for meteors burning up and creating shooting stars?
Mesosphere
What is the temperature trend with increasing altitude in the mesosphere?
Temperature decreases
What happens when oxygen molecules (O2) in the stratosphere absorb UV radiation?
They dissociate to give atomic oxygen (O)
What is the top of the stratosphere known as?
Stratopause
Which gas has a residence time of around 10 years and is known for its high potential for greenhouse warming?
Methane (CH4)
What is a significant contributor to climate change and responsible for a portion of global warming?
Atmospheric chemical reactions
Which process can increase ozone concentration near Earth's surface in polluted air?
Chemical reactions in polluted air
What is the main source of carbon dioxide emissions due to human activities?
Combustion
Which natural process can lead to seasonal oscillations in carbon dioxide concentrations?
Organic decay
What is the primary role of ozone in the stratosphere?
Absorbing harmful ultraviolet (UV) radiation
What is the function of carbon dioxide in the Earth's atmosphere?
Captures heat, leading to the greenhouse effect
Which gas is known for its low reactivity and unique properties?
Helium
What is the main source of Argon in the atmosphere?
Radioactive decay of potassium in rocks
Which gas has a residence time of around 150 years in the atmosphere?
Carbon Dioxide
How do variable gases differ from noble gases?
Variable gases are highly reactive, while noble gases are not reactive
Which of the following gases contributes to climate change?
Carbon Dioxide
What is the residence time of water vapor in the atmosphere?
10 days
Which of the following is true about water vapor?
It is the gaseous phase of water
Where is the atmospheric concentration of water vapor the highest?
Near ocean surface in tropics
What is the typical lifespan of aerosols in the atmosphere?
Days to weeks
Which primary source contributes to aerosols in the atmosphere?
Natural sources
Why do aerosols act as cloud condensation nuclei?
They provide a surface for water vapor to condense on
Test your knowledge about the sources of carbon dioxide in the atmosphere, including plant and animal respiration, volcanoes, organic decay, and combustion. Explore the sinks of carbon dioxide such as plants and oceans, as well as the seasonal oscillation and long-term increase in CO2 concentration.
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