Reflected light from the Moon in a lake often appears as a vertical column when the water is
A)perfectly still.
B)slightly rough.
C)very rough as with churning waves.

Question

Quizplus · Accepted Answer

When the water is slightly rough, it acts as a multitude of reflecting surfaces at different angles, causing the reflected light from the Moon to spread out vertically, creating the appearance of a vertical column. In contrast, perfectly still water would reflect the Moon as a single spot, and very rough water would scatter the light too much to form a coherent column.

Reflected Light from the Moon in a Lake Often Appears