A tsunami is a natural disaster that occurs when a large body of water, such as an ocean or sea, experiences a sudden disturbance that causes a series of powerful waves. These waves can cause significant destruction to coastal communities and infrastructure, often resulting in loss of life and property damage.


The generic structure of an explanation text about tsunamis typically includes:

1. Introduction: This section provides background information about tsunamis, explaining what they are and how they form.
   
2. Causes:This section discusses the various factors that can lead to a tsunami, such as earthquakes, volcanic eruptions, and landslides.
   
3. Effects: This section describes the impact of a tsunami on coastal areas, including the destruction of buildings, loss of life, and damage to infrastructure.
   
4. Prevention and Preparedness: This section offers advice on how to prepare for a tsunami and what to do in the event of an actual tsunami warning.
   
5. Conclusion: This section summarizes the key points of the text and reiterates the importance of being aware of the dangers posed by tsunamis.

Overall, the purpose of an explanation text about tsunamis is to educate readers about this natural disaster and provide them with the information they need to stay safe in the event of a tsunami.