Light Is Refracted as It Crosses the Interface Between Two

question 4

Multiple Choice

Light is refracted as it crosses the interface between two different media because

• A) it changes frequency.
• B) it loses energy.
• C) it changes speed.
• D) it becomes polarized.

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Definitions:

Extensor Digitorum Longus

A muscle in the leg that helps to extend the toes and dorsiflex the foot.

Orbicularis Oris

A complex of muscles in the lips that encircles the mouth, controlling movements such as closing and puckering.

Buccinator

A muscle of the cheek that compresses the cheek against the teeth and aids in chewing.

Orbicularis Oculi

A circular muscle around the orbit of the eye that allows the eyes to close, blink, and squint.