Asked by Avery Williams
Why is Venus the hottest solar system planet?
A. It has abundance of nitrogen and oxygen gases.
B. It is closest to the sun.
C. Its atmosphere is rich in carbon dioxide gas.
D. It has a core, a mantle, and a crust.
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C. Its atmosphere is rich in carbon dioxide gas.
Venus has a very thick CO2 atmosphere (≈96% CO2, ~3.5% N2) and clouds that produce a runaway greenhouse effect, trapping infrared radiation and raising the surface temperature to ~460°C (≈735 K). Mercury is closer to the Sun but lacks a dense atmosphere, so it cannot retain heat the way Venus does. The presence of a core/mantle/crust or nitrogen/oxygen abundance is not what makes Venus the hottest.
Venus has a very thick CO2 atmosphere (≈96% CO2, ~3.5% N2) and clouds that produce a runaway greenhouse effect, trapping infrared radiation and raising the surface temperature to ~460°C (≈735 K). Mercury is closer to the Sun but lacks a dense atmosphere, so it cannot retain heat the way Venus does. The presence of a core/mantle/crust or nitrogen/oxygen abundance is not what makes Venus the hottest.
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