Light

Light only travels in straight lines.

Reflection

Refraction

Light only can travel in a straight line so an object placed in front of a beam of light is a shadow. An object which produced light is called a luminous object while an object that does not produce light is called a non-luminous object.

Light only travels in straight lines. When a beam of light hits a mirror, this is called the incident ray. The reflected ray coming out will have the exact same angle as the incident ray. The incident ray must always equal the reflected ray.

Refraction is the occurrence of the movement of a beam of light when it enters a different area. For example when a beam of light enters a more dense area like water, it bends away from the ordinary causing the images inside to look distorted. But when it exits the water it bends back towards the ordinary.

Light

Reflection

Refraction