When Gary observes the moon closer to the horizon, it appears to be huge. However, when the moon is further away from the horizon, it appears to shrink in size. Of course, Gary is aware that the size of the moon does not actually change, but the phenomenon being observed is due to ________.

Question

Quizplus · Accepted Answer

This phenomenon is due to a monocular depth cue, specifically the Moon illusion, where the Moon appears larger near the horizon than it does higher up in the sky. This illusion is related to how our brain interprets visual information using cues that can be seen with just one eye, hence "monocular."

When Gary Observes the Moon Closer to the Horizon, It