The V-scale is a measurement system used to assess the severity of volcanic eruptions. It helps scientists categorize eruptions based on their impact on the environment and human activities. The scale ranges from V0, indicating a minor eruption, to V5, which signifies a catastrophic event. This scale is important for emergency management and public safety, as it provides clear information about potential hazards. By understanding the V-scale, communities can better prepare for volcanic activity and mitigate risks associated with eruptions, such as ashfall and lava flows.