Mission RL1 Meaning and Cause of Refraction
Getting your Trinity Audio player ready...
Hold down the T key for 3 seconds to activate the audio accessibility mode, at which point you can click the K key to pause and resume audio. Useful for the Check Your Understanding and See Answers.

Light waves refract when passing across the boundary between two media because _____.

Definition of Refraction:
Refraction is the bending of the path of light that occurs when light passes across the boundary from one medium to a new medium. The path of light changes or bends at the boundary.
Refraction is the bending of the path of light that occurs when light passes across the boundary from one medium to a new medium. The path of light changes or bends at the boundary.

Refraction occurs when light passes from one medium to another medium. The speed of light is dependent upon the medium through which it is traveling. Upon crossing the boundary, the speed of light changes. This speed change leads to a subsequent direction change. The change in direction of the path of light upon crossing the boundary is known as refraction.