The appearance of a star to twinkle, or flicker, is caused by ____ of light through regions of different densities.
A) reflection
B) refraction
C) diffraction
D) scattering

Question

Quizplus · Accepted Answer

The flickering of a star is caused by the refraction of light passing through pockets of atmosphere with varying densities. As the pockets of air move and shift, the light passing through them is bent at different angles, causing the appearance of twinkling.

The Appearance of a Star to Twinkle, or Flicker, Is