As part of their Science work, Year 6 have been looking at light and how we see objects. They have found out that light is a type of energy known as electromagnetic radiation. It is made up of photons (little particles of energy).
Light waves travel out from sources of light in straight lines. These lines are often called rays or beams of light. These rays of light travel from a light source and hit objects around us.
The rays of light reflect, or bounce, off an object, and then travel into our eyes. This reflection of light allows us to see the object.
In addition, Year 6 have also been learning about how mirrors reflect light. The light ray that hits the mirror or other object is described as the incident ray, and the ray of light that bounces off is known as the reflected ray. When rays of light reflect, they obey the law of reflection: The angle of incidence always equals the angle of reflection.
Using this knowledge, Year 6 have been making periscopes.