How to Make Fake Snow

Film info

Film summary

Snow forms in the atmosphere as a result of water molecules attaching themselves to nuclei bacteria. But scientists have found ways to manipulate the freezing process of water and the production of these nuclei to create snow artificially.

Key facts

• Snowflakes need ice-forming nuclei, such as dust, bacteria and pollen grains.
• Snowflakes can be created from supercooled water, which remains liquid below zero degrees Celsius.
• Supercooled water immediately crystallises when it comes into contact with foreign nuclei.
• Indoor ski slopes use supercooled water to create fake snow.