Final answer:
A tsunami can result from tectonic activity on the seafloor, an intense storm, or constructive wave interference.
Step-by-step explanation:
A tsunami may result from tectonic activity on the seafloor. When there is an earthquake, especially a powerful one, under the ocean, it can create a series of large waves called a tsunami. These waves can travel across the ocean and cause devastating destruction when they reach the coastline.
A tsunami can also be caused by an intense storm with strong winds and low atmospheric pressure, which can result in a sudden rise in the sea level and powerful waves.
Additionally, a tsunami can be generated by constructive wave interference, where multiple waves combine and reinforce each other to create a large deep-water wave.
Learn more about Causes of tsunamis