The atmospheres of the planets in our solar system differ in their physical compositions. Which planet would you expect to have the thickest atmosphere?


a planet with a hot atmosphere and strong gravity
a planet with a cold atmosphere and strong gravity
a planet with a cold atmosphere and weak gravity
a planet with a hot atmosphere and weak gravity
anyone, plesae help! I think D.

A planet with a cold atmosphere and strong gravity.

You posted this yesterday and received a reply. Why are you post again?

I am not sure, i need explantion!

http://www.jiskha.com/display.cgi?id=1438290333

Using basic physics, a cold setting would cause gasses to slow down and compact itself, allowing for more and more molecules of gasses to fit into the atmosphere. what determines the size of the atmosphere ultimately depends on the gravitational pull. a higher gravitational pull would have a larger atmosphere because it can collect more gasses compared to a planet with a weaker atmosphere, which can only collect so many gas before losing its grip

To determine which planet would have the thickest atmosphere, we need to consider the physical compositions and conditions of the planets in our solar system.

Let's analyze the given options:

A. A planet with a hot atmosphere and strong gravity: A hot atmosphere could cause the gases to expand, potentially leading to a thicker atmosphere. Additionally, strong gravity can help retain the gases. However, the exact composition and other factors also play a role.

B. A planet with a cold atmosphere and strong gravity: A cold atmosphere might result in less expansion of gases, so it is less likely to have a thick atmosphere. However, strong gravity can still aid in retaining the gases.

C. A planet with a cold atmosphere and weak gravity: Similar to option B, a cold atmosphere might result in less expansion of gases, making it less likely to have a thick atmosphere. Weak gravity would also hinder the retention of gases.

D. A planet with a hot atmosphere and weak gravity: A hot atmosphere could cause gases to expand, potentially increasing the thickness of the atmosphere. However, weak gravity might allow the gases to easily escape into space, resulting in a thinner atmosphere.

Considering these factors, option A (a planet with a hot atmosphere and strong gravity) is the most likely to have the thickest atmosphere. Strong gravity would help retain the gases, while the hot temperature could contribute to gas expansion and an overall thicker atmosphere.

Thus, the correct answer is A.