Volcano Pre-Test
Students
The following quiz contains 12 questions about volcanic hazards. Please complete all
questions with as much detail as you can. You can also use diagrams to answer the
questions.
If you require any assistance, please ask a member of the outreach team.
Questions
1. What is the name of the volcano on St. Vincent?
2. What year did this volcano last erupt?
3. Can you name any other years when this volcano has erupted?
4. Volcanoes have many ‘volcanic hazards’ that occur during eruptions. What does the
phrase ‘volcanic hazard’ mean?
5. Volcanic ash is produced by many eruptions around the world including those on St.
Vincent but what exactly is volcanic ash?
6. Where does volcanic ash come from?
7. Lahars are common during and after volcanic eruptions. Why do lahars form?
8. How long after a volcanic eruption can lahars occur?
9. What is a pyroclastic flow?
10. Why are pyroclastic flows dangerous?
11. What colour zone of the ‘volcanic hazard map’ are these towns in? (Red, Orange,
Yellow or Green).
Chateaubelair
Fancy
Georgetown
12. How long can a volcanic eruption last?