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Which gas is primarily responsible for the greenhouse effect on Venus?
Nitrogen
Oxygen
Carbon Dioxide
Methane
Carbon Dioxide
Carbon dioxide constitutes approximately 96.5% of Venus's atmosphere, creating a runaway greenhouse effect. This extreme concentration traps solar heat, making Venus the hottest planet in our solar system despite not being closest to the Sun.
Carbon dioxide constitutes approximately 96.5% of Venus's atmosphere, creating a runaway greenhouse effect. This extreme concentration traps solar heat, making Venus the hottest planet in our solar system despite not being closest to the Sun.
Think of it like a car parked in the sun with all windows rolled up; the glass lets sunlight in, but traps the heat inside, causing the interior temperature to skyrocket compared to the outside.
V-C-H: Venus, Carbon dioxide, Hottest.
EphotonтАЛ=h╬╜ тАФ Energy of solar radiation
I=╧ГT4 тАФ Stefan-Boltzmann law governing blackbody radiation
Venusian atmosphere acts like a thermal blanket. Incoming solar radiation (short-wave) penetrates the atmosphere, but the heat radiated from the surface (long-wave infrared) is absorbed by CO2тАЛ molecules. This re-radiation of thermal energy back toward the surface raises the planetary temperature to nearly 735┬аK.
Venus is often called Earth's 'sister planet' due to size but has a drastically different atmosphere.
The surface pressure on Venus is about 92 times that of Earth.
Carbon dioxide is the dominant greenhouse gas in the solar system.
Extreme temperatures melt lead
Atmospheric pressure crushed early landers
Planetary climate modeling
Study of extreme thermal regulation
The runaway greenhouse effect on Venus is caused by the lack of liquid water, which on Earth helps sequester CO2тАЛ into carbonate rocks.
Nitrogen (A) is the primary component of Earth's atmosphere, not Venus.
Oxygen (B) is a trace gas on Venus.
Methane (D) is a potent greenhouse gas but is not the primary driver on Venus.
C is correct тАФ Carbon dioxide is the primary greenhouse gas responsible for the extreme surface temperature of Venus.
Always remember that while Methane is a more potent greenhouse gas per molecule than Carbon Dioxide, CO2тАЛ is the primary driver on Venus due to its overwhelming concentration.
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