Answer:

4.Yes,when during volcanic eruptions and when the tectonic plates are moving.

5.Yes, because when the tectonic plates where located in the ocean or at least near in the ocean and it moves because of the circumstances or because of the earthquake the underground will shaked that cause a tsunami. And there's also a possibility that when a strong earthquake occur near a ocean the underground floor in the ocean will shaked and cause a tsunami.

Explanation:

In my opinion Lang po at sa nalaman ko noon sa grade 8