Mark and a Jacob are driving home on a college break.Mark is in the passenger seat.Bored,Mark gazes into the middle of an empty field.He notices that distant hilltops seem to move slowly in the same direction in which their car is moving; by contrast,mile markers on the side of the highway seem to whiz past them in the opposite direction.The difference in the apparent speed and direction of objects' motion serves as a depth cue termed motion:
A)disparity.
B)parallax.
C)perspective.
D)gradient.

Question

Quizplus · Accepted Answer

The depth cue described in the scenario is called motion parallax, which is the apparent movement of objects at different distances as an observer moves. The distant hilltops move more slowly, while the mile markers move quickly in the opposite direction, creating a sense of depth perception. None of the other options (disparity, perspective, gradient) accurately describe the depth cue being used in this scenario.

Mark and a Jacob Are Driving Home on a College