A particular area in a country or the world.
Region
To be everywhere around someone or something.
Surrounded.
To throw out smoke, fire and melted rocks.
Explode
The grey powder left after you burn something.
Ash
To let substance such as gas or water get out.
Release
To check a situation carefully.
Monitor
A small amount of something which can be examined.
Sample
To burst with noise and force.
Erupt
