Which of these statements correctly describes why methane and carbon dioxide are considered to be significant greenhouse gases?
I. Both have permanent dipole moments that change with vibration of the molecule.
II. Neither has a permanent dipole moment, but a dipole moment is produced when the
Molecule vibrates.
III. The concentration of carbon dioxide in the atmosphere increases when fossil fuels are
Mined and burned.

Question

Quizplus · Accepted Answer

II and III are correct. Methane and carbon dioxide do not have permanent dipole moments; however, they can exhibit dipole moments when they vibrate, which allows them to interact with infrared radiation and contribute to the greenhouse effect. Additionally, the concentration of carbon dioxide does indeed increase with the mining and burning of fossil fuels, contributing to its significance as a greenhouse gas.

Which of These Statements Correctly Describes Why Methane and Carbon