The best explanation for the difference in surface temperatures between Mars and Venus, despite both planets having atmospheres consisting mostly of carbon dioxide, is the differences in their atmospheres' thickness and composition. Venus has a much denser atmosphere consisting of mostly carbon dioxide, with thick clouds of sulfuric acid, which creates a greenhouse effect. This traps heat and results in extreme temperatures of up to 864 degrees Fahrenheit (462 degrees Celsius) on its surface, making Venus the hottest planet in our solar system.
On the other hand, Mars has a thin atmosphere made up mostly of carbon dioxide, with no significant greenhouse gases or cloud cover to retain heat. As a result, the heat from the sun quickly escapes back into space, leading to temperatures averaging around -80 degrees Fahrenheit (-62 degrees Celsius) on its surface, making Mars one of the coldest planets in our solar system.
Which of the following best explains why Mars' and Venus' surface temperatures vary, despite both planets having atmospheres that contain mostly carbon dioxide?(1 point)
9 answers
Which of the following best explains why Mars' and Venus' surface temperatures vary, despite both planets having atmospheres that contain mostly carbon dioxide?(1 point)
Responses
Mars has a thin atmosphere that cannot hold much heat.
Mars has a thin atmosphere that cannot hold much heat.
Venus has a thick atmosphere which blocks heat from the surface.
Venus has a thick atmosphere which blocks heat from the surface.
Mars has a surface of red rocks and sand which reflect heat.
Mars has a surface of red rocks and sand which reflect heat.
Venus has a surface of high mountains which absorb heat.
Responses
Mars has a thin atmosphere that cannot hold much heat.
Mars has a thin atmosphere that cannot hold much heat.
Venus has a thick atmosphere which blocks heat from the surface.
Venus has a thick atmosphere which blocks heat from the surface.
Mars has a surface of red rocks and sand which reflect heat.
Mars has a surface of red rocks and sand which reflect heat.
Venus has a surface of high mountains which absorb heat.
The correct answer is:
Venus has a thick atmosphere which blocks heat from the surface.
Venus has a thick atmosphere which blocks heat from the surface.
Why is Venus the hottest solar system planet?(1 point)
Responses
It is closest to the sun.
It is closest to the sun.
It has a core, a mantle, and a crust.
It has a core, a mantle, and a crust.
It has abundance of nitrogen and oxygen gases.
It has abundance of nitrogen and oxygen gases.
Its atmosphere is rich in carbon dioxide gas.
Its atmosphere is rich in carbon dioxide gas.
Responses
It is closest to the sun.
It is closest to the sun.
It has a core, a mantle, and a crust.
It has a core, a mantle, and a crust.
It has abundance of nitrogen and oxygen gases.
It has abundance of nitrogen and oxygen gases.
Its atmosphere is rich in carbon dioxide gas.
Its atmosphere is rich in carbon dioxide gas.
The correct answer is:
Its atmosphere is rich in carbon dioxide gas.
Its atmosphere is rich in carbon dioxide gas.
The weight of an object depends on the force of gravity acting on it. On which planet would a given object weigh the most?
(1 point)
Responses
Jupiter
Jupiter
Saturn
Saturn
Earth
Earth
Mars
(1 point)
Responses
Jupiter
Jupiter
Saturn
Saturn
Earth
Earth
Mars
The correct answer is Jupiter.
Which percent of Earth’s atmosphere does carbon dioxide gas make up?(1 point)
Responses
about 78 percent
about 78 percent
more than 99 percent
more than 99 percent
about 21 percent
about 21 percent
less than 1 percent
Responses
about 78 percent
about 78 percent
more than 99 percent
more than 99 percent
about 21 percent
about 21 percent
less than 1 percent
The correct answer is less than 1 percent.