Final answer:
The statement about the change in direction of light as it passes through different media being referred to as refraction is true. This phenomenon is described by Snell's Law, which explains how light bends when passing between materials with different refractive indices.
Step-by-step explanation:
The statement that the change in the direction of light as it passes through the boundary between two media is called refraction is true. Refraction occurs as light waves move from one medium into another with a different density or refractive index, leading to a change in speed and consequently the direction of the wave. This is why a pencil may appear bent when partially submerged in water, as the light from the pencil changes direction when moving from water to air.
There are two main laws that describe refraction, often referred to together as Snell's Law. First, the incident ray (approaching the boundary), the refracted ray (the one that has entered the new medium), and the normal (the line perpendicular to the boundary surface) all lie in the same plane. Second, the ratio of the sines of the angles of incidence and refraction is constant and is equal to the ratio of the speeds of light in the original and the new medium (or inversely proportional to the refractive indices).