They would like to know why the explosion from the volcano would not wake up the people in time for them to get to safety. Mrs. Wilson's 2nd Grade Class Dear Mrs. Wilson's 2nd Grade Class, I think you are a smart class. You are right that sometimes the explosions from a volcano wake people up. Sometimes there are earthquakes too. Sometimes pyroclastic flows and tsunami can happen quickly and without warning.
People have no time to escape.
Pyroclastic flows can arrive before the people have a chance to move to a safe place. A tsunami can be generated from a distant volcano. Fortunately, volcanologists are getting better at predicting eruptions and people are more aware of the dangers of living on or near volcanoes. Thank you for a good question.