All snowflakes contain six sides or points owing to the way in which they form. The molecules in ice crystals join to one another in a hexagonal structure, an arrangement which allows water molecules - each with one oxygen and two hydrogen atoms - to form together in the most efficient way.
Because a snowflake's shape evolves as it journeys through the air, no two will ever be the same. Even two flakes floating side by side will each be blown through different levels of humidity and vapour to create a shape that is truly unique.
Guinness World Records lists a snowflake 15 inches in diameter and 8 inches thick as measured at Fort Keogh, Montana, in 1887, as the largest.
The speed of snowSnowflakes which collect supercooled water as they fall can fall at up to 9 mph, but snowflakes, as most people recognise them, will tend to float down at around 1.5 mph taking about an hour to reach the ground.
Are all snowflakes unique? The short answer is, yes, because each ice crystal has a unique path to the ground. They will float through different clouds of different temperatures and different levels of moisture, which means the ice crystal will grow in a unique way.
Snowflakes are actually ice crystals that are formed from water in the atmosphere. If it were warmer, this water would come to the ground as rain or fog, but in the winter it's cold enough that water vapour freezes into ice crystals.
The ice crystals that make up snowflakes are symmetrical (or patterned) because they reflect the internal order of the crystal's water molecules as they arrange themselves in predetermined spaces (known as “crystallization”) to form a six-sided snowflake.
Although no two snowflakes are exactly alike, snow crystal forms usually fall into several broad categories. Dendrite means "tree-like", which describes the multi-branched appearance of these snow crystals.
Wilson Bentley
| Wilson A Bentley |
|---|
| Born | Wilson Alwyn BentleyFebruary 9, 1865 Jericho, Vermont, United States |
| Died | December 23, 1931 (aged 66) Jericho, Vermont, United States |
| Nationality | American |
| Known for | Pioneering the study of atmospheric ice crystal formation and snowflake photography |
The term "snowflake generation" was one of Collins English Dictionary's 2016 words of the year. Collins defines the term as "the young adults of the 2010s (born from 1980-1994), viewed as being less resilient and more prone to taking offence than previous generations".
because the air is cold, all the way down to the surface, snowflakes don't melt. As flakes fall from the air, temperatures at the surface become warmer. This causes the snowflakes to partially melt. This scenario is when you would expect fat flakes.
This system defines the seven principal snow crystal types as plates, stellar crystals, columns, needles, spatial dendrites, capped columns, and irregular forms.
In ice crystals, water molecules line up and form a six-sided shape called a hexagon. This is why all snowflakes are six-sided! This shapes each snowflake differently. Two snowflakes from the same cloud will have different sizes and shapes because of their different journeys to the ground.
