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Name:_________________________

Natural Disasters and Environmental Geology (GEOL 104)

College of Southern Idaho (CSI)

Shawn Willsey, Professor

Deadliest Volcanoes Video Questions

NOVA: Deadliest Volcanoes

Watch the entire 53-minute video.  Answer the following questions as you watch.

1. What temperature does solid rock need to reach to melt and form liquid lava? (realize this is a generalization and that not all rock melts at the same temperature)

2. Explain how and why volcanoes erupt.

3. How many deaths have occurred over the past two centuries from violent volcanic eruptions?

4. Why did the Eyjafjallajökull volcano in Iceland begin as a passive eruption and become more explosive, emitting ash and shutting down air traffic in Europe?

5. What is the easiest way for underground magma to reach the surface as in Yellowstone?

6. A burning cloud or avalanche of ash and gas such as those that killed the residents of Pompeii is called a:

7. What kind of volcano is Campi Phlegraei and Yellowstone and forms when a large eruption creates a large bowl-shaped depression?

8. What two gases does Professor Aiuppa (University of Palermo) measure at Stromboli in order to try and predict eruptions?

9. What is the biggest and most dangerous hazard associated with Mount Rainier?

10. Explain how the complete lahar evacuation system in Orting, WA works.

Name:_________________________

Natural Disasters and Environmental Geology (GEOL 104)

College of Southern Idaho (CSI)

Shawn Willsey, Professor

Deadliest Earthquakes Video Questions

NOVA: Deadliest Earthquakes

Watch the entire 54-minute video.  Answer the following questions as you watch.

1. Using GPS to measure ground motion, how many cm did the ground shift during the 2010 Haiti earthquake?

2. Name the two plates that comprise the plate boundary in Haiti.

3. Why is there still reason to be concerned about a future Haitian earthquake based on the research of Eric Calais?

4. How many times faster does the San Andreas Fault move compared to the plate boundary in Haiti?

5. When was the last lethal quake on the San Andreas Fault system and what was its magnitude?

6. Why does Chile experience so many strong earthquakes such as the M8.8 in 2010?

7. What hazardous side effect often accompanies large megathrust earthquakes?

8. What area of the continental U.S. is at risk from a megathrust earthquake.

9. What data does geologist Chris Goldfinger collect to study earthquakes?

10. Describe how the Shake Alert warning systems works.