www.nationalgeographic.com/forcesofnature
[click on Volcanoes]
LAB
WHAT IS A VOLCANO?
1. How many volcanoes are active today?
2. Almost 90% of the active volcanoes are in the _________ ____ ___________ . This is a band of volcanoes
circling the edges of the _______________ ______________.
3. Scientific instruments detect about ________ quakes worldwide.
4. If a volcano erupts suddenly in a heavily populated area or in a remote region, what could the results be?
5. What are the benefits of volcanoes?
WHERE DO VOLCANOES OCCUR?
6. Most volcanoes occur at ___________ ________________.
HOW DO VOLCANOES FORM?
Describe how each of these volcanoes form and where some are located (shown on the map as you click on
each type).
7.
Island-arc volcano
8.
Hot Spots
9. Spreading centers
10. Subduction zones
11. Continental rift zones
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TYPES OF VOLCANOES
Describe each volcano type. Include the shape and composition.
12. Cinder cone
13. Caldera
14. Composite
15. Shield
16. Submarine
17. Lava Dome
HOW DO VOLCANOES ERUPT?
18. What are two important traits that characterize volcanoes?
19. An eruption begins when______
TRIGGER AN EARTHQUAKE
20. What happens if an earthquake occurs on bedrock with low magnitude?
21. What happens if an earthquake occurs in a landfill with low magnitude?
22. What happens if an earthquake occurs at a fault zone with low magnitude?
23. What happens if an earthquake occurs on bedrock with high magnitude?
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24. What happens if an earthquake occurs in a landfill with high magnitude?
25. What happens if an earthquake occurs at a fault zone with high magnitude?
MAP
26. Name three hot sites for earthquakes (give the details).
CASE STUDIES
27. Pick one case study out of the six given and write a synopsis on it.