Venus is considered to be our sister planet for many reasons, but there is one major difference...its atmosphere. Venus is the same size as Earth, but its atmosphere is extremely thick. The pressure and temperature at the surface of Venus are hot enough to melt some metals, and indeed it does rain on Venus...it rains sulfuric acid. Quite unpleasant! Why is this? Why the stark differences (there are reasons other than it being a tad closer to the Sun)? How does the presence of an atmosphere affect the weather (or temperature) on a planet? What are the different ways in which a planet can obtain an atmosphere?
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This causes the planet's surface temperature to be much hotter than Earth's. The high temperature causes the rocks on Venus to release gases, such as carbon dioxide, into the atmosphere. These gases then trap heat, creating a greenhouse effect that further Show more…
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Venus is similar to Earth in size and distance from the Sun but has an atmosphere inhospitable for human life that consists of $96.5 \% \mathrm{CO}_{2}$ and $3.5 \% \mathrm{N}_{2}$ by mass. a. Calculate the atmospheric pressure on Venus given the mass of the Venusian atmosphere $\left(4.8 \times 10^{20} \mathrm{kg}\right),$ the surface area $\left(4.6 \times 10^{14} \mathrm{m}^{2}\right)$, and the acceleration due to gravity $\left(8.87 \mathrm{m} / \mathrm{s}^{2}\right)$ "b. Given the similarity between Venus and Earth in surface area, why do you suppose atmospheric pressure on Venus is so much higher than on Earth?
2. Earth is different from other planets in a way that it is the only planet with liquid water on the surface. a. Earth, Venus, and Mars may have similarities: (1) They all are terrestrial planets, made of solid rocks and silicates; (2) They all have an atmosphere; (3) They all almost have the same time to rotate on their axes: (4) Earth and Mars both have water; (5) They all have carbon dioxide; and (6) All have landforms. a. Earth. Venus, and Mars have differences: (1) Venus has no water; (2) Venus and Mars don't have oxygen; and (3) Earth has life forms.
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