Why is the surface of Venus so hot?

A. Decay of radioactive elements generates energy.
B. Heat is released by volcanic activity.
C. Solar energy is trapped by a CO2 greenhouse.

Question

Why is the surface of Venus so hot?

A. Decay of radioactive elements generates energy.
 B. Heat is released by volcanic activity.
 C. Solar energy is trapped by a CO2 greenhouse.

Shadow · Answer

C because when I think the pressure is 90x that of walking on Earth. You can fact check me on that number if you wish, but what I do recall from the lecture is that the pressure due to the thick atmosphere (which traps heat) is similar to being at the bottom of the ocean.

563blackghost · Answer

Yup, Venus's atmosphere is way to massive (about 100 times more i think). It's only so hot because the thick atmosphere doesn't let a single thing pass but just traps everything. So I agree cx