But why do certain shapes appear at different temperatures ... the hexagon (called prism facets), then the snowflake is more likely to grow as a plate. But our warming world is also influencing ...

The shape is based on how much moisture is present in the air. The five main snowflakes are thin plates, needles, hollow ...

This has a big effect on its shape. If humidity is low, there isn’t as much water vapour in the atmosphere so the snowflakes form something called 'plates', the flat hexagonal shapes you see if ...