Definition: A circular band of coloured light, visible around the sun or moon etc., caused by reflection and refraction of light by ice crystals in the atmosphere.

Alright class, settle down, let’s take a look! Today we’re tackling ‘halo,’ a beautiful word indeed, Let's break it down, plant a knowledge seed. The dictionary gives us a lovely, clear phrase: "A circular band of coloured light, in atmospheric haze." Now, think about how light behaves, it’s true, It reflects and refracts , for me and for you! Reflect means bouncing back, a shiny display, Like sunlight on water, bright throughout the day. Refract is bending light, a twist and a turn, As it passes through air, lessons we learn! These icy crystals, so delicate and slight, Are causing this dance, a magical sight. They’re splitting the light into its colors so grand, Red, orange, yellow – across the land! So when you see a halo, bright and serene, Remember this lesson, a colorful scene! Does that make sense? Any questions to share?