Why is snow white ?

Liquid water is clear, but snow is white. Do you know the reason behind this ?
Snow is a bunch of ice crystals stuck together. It’s a very complex arrangement. To understand why snow is white, we must be familiar with what happens to light when it strikes any material. The colour of anything, including snow, depends on how light interacts with it.Visible light consists of a rainbow of colours, the ROY G BIV colours of red, orange, yellow, green, blue, indigo, and violet . When photons of light strike an object, they may bounce back (reflection), bounce to the sides (scattering), pass right through (transmission), or give up their energy (absorption). Grass is green because it reflects the green light to our eyes and absorbs all the other colours. Red apples reflect red light to our eyes and absorb the wavelengths of all the other colours.

Well, the snow crystals have many surfaces at different angles and each one of these surfaces acts like a tiny mirror which bounces back the light. So, the white colour you are seeing is actually the light that is being reflected. The light bouncing off the surfaces contains all the colours of the rainbow combined together, to make white light. This white light lands on a snow crystal’s surface and then reflects back off, like a flashlight beam on a mirror.

This act of bouncing light is what scientists would call scattering.