Snow stability tests are methods used to assess the strength and stability of snowpack layers. These tests help determine the likelihood of avalanches by identifying weak layers within the snow. Common tests include the compression test and the shear test, which involve applying force to the snow to observe how it reacts. These tests are typically performed by avalanche forecasters and backcountry enthusiasts to ensure safety in snowy environments. By understanding the snow's stability, they can make informed decisions about travel routes and potential hazards, ultimately reducing the risk of accidents in mountainous areas.