A dormant volcano may have its activity monitored by looking at ground tilt, at magnetic field changes, by local seismic activity, and by the behaviour of regional hot pools. Of these techniques, seismic signals may give the most warning.
Predictions
meteorology
A meteorologist.
It is impossible to make long-term predictions of when a volcano will next erupt.
predictions
because scientist are payed by the government
They allow scientist to identify trends and make predictions
Sometimes they study the way the plates move. They can either move convergently, divergently, or transforming.
Make predictions
Large computers process the information and make predictions.
Because it all depends on what type of volcano it is, if it is a shield volcano low and flat it's eruptions will be gentle. But if it is a cone volcano tall and steep it's eruptions will be very violent.
predict them!