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)

Question

Responses

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.

Mars has a thin atmosphere that cannot hold much heat.
Mars has a thin atmosphere that cannot hold much heat.

Venus has a surface of high mountains which absorb heat.
Venus has a surface of high mountains which absorb heat.

Answer 1

The best explanation for the variation in surface temperatures between Mars and Venus, despite both having atmospheres that contain mostly carbon dioxide, is:

Mars has a thin atmosphere that cannot hold much heat.

Venus has a thick atmosphere that creates a strong greenhouse effect, trapping heat and resulting in much higher surface temperatures compared to Mars, which has a very thin atmosphere that is less effective at retaining heat.

Answer 2

Why is Venus the hottest solar system planet?(1 point)
Responses

Its atmosphere is rich in carbon dioxide gas.
Its atmosphere is rich in carbon dioxide gas.

It has abundance of nitrogen and oxygen gases.
It has abundance of nitrogen and oxygen gases.

It is closest to the sun.
It is closest to the sun.

It has a core, a mantle, and a crust.

Answer 3

The correct response is:

Its atmosphere is rich in carbon dioxide gas.

Venus has a dense atmosphere composed mainly of carbon dioxide, which creates a strong greenhouse effect, trapping heat and leading to extremely high surface temperatures, making it the hottest planet in the solar system, despite not being the closest to the Sun.