Astronomy Practice Exam 2025 – Complete Preparation Guide

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Question: 1 / 460

What is the approximate surface temperature of Venus?

500 degrees F

870 degrees F

The surface temperature of Venus is approximately 870 degrees Fahrenheit, which is incredibly high and mainly attributed to a thick atmosphere composed mostly of carbon dioxide, with clouds of sulfuric acid. This dense atmosphere creates a runaway greenhouse effect, trapping heat and preventing it from escaping back into space. Venus is the hottest planet in our solar system, even hotter than Mercury, despite being further from the Sun, because of this extreme atmospheric composition combined with its proximity to the Sun.

In contrast, the other choices listed suggest temperatures that are significantly lower than the actual average surface temperature of Venus, which does not accurately reflect the extreme conditions found there.

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600 degrees F

400 degrees F

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