**Waves+Glossary

= Waves Glossary =

Tsunami - a large, often devastating wave caused by earthquakes, volcanic eruptions, and underwater landslides.

Crest - the highest point of a wave

Trough - the lowest point of a wave

Wavelength - the distance between two adjacent (Exactly the same) crests or troughs of a wave

Breakwater - a barrier built out at sea to prevent property damage caused by waves.