A volcano that is erupting or has shown signs that it may erupt in the future is called

What is a determining factor in which type of eruption will occur?

How thick something is or the ability of a fluid or liquid to flow is its 

Your family is going to evacuate. You are told to bring along only a few things. Which of these will you bring?

Ashes from an erupting volcano are all over your place. What should you do protect yourself?