Exam 5: Volcanoes and Volcanic Hazards

Along which tectonic boundary would the greatest amount of magma be generated every year? Why?

How do scientists use earthquakes to determine if a volcano may erupt soon?

An example of a volcanic caldera that formed from the collapse of a magma chamber after large volumes of material were erupted is ________.

Along which tectonic boundary will chains of composite cone volcanoes be located?

Lavas erupting from composite cones are generally ________-rich, making them very viscous.

________ is pulverized rock, lava fragments, and ash erupted from a volcano.

Based on the volcanic type and construction of the flanks, what assumptions can you make about the viscosity of the lava?

Assume you live near Mount St.Helens and the volcano is going through an explosive eruption.Explain the effect pyroclastic materials would have on your home.

How is magma generated along subduction zones?

What type of lava is produced at a divergent plate boundary?

How is a volcanic neck different from a volcanic pipe?

Explain why volcanic bombs take on a streamlined shape when they are flung through the air.

Which volcanoes have flanks with the steepest angle of repose (between 30° and 40°)?

What kind of viscosity would flood basalts have?

The volcanic islands visible here formed as a result of a mantle plume.Assuming the left side of the figure is west and the right side east, in which direction is the tectonic plate is moving?

In what year did Parícutin form in a Mexican cornfield?

How will the water vapor in magma reduce the viscosity of the magma?

Around which volcano is a scientist likely find pillow basalts?

Compare and contrast the three types of volcanoes (shield, cinder cones, and composite cones).Make sure to comment on the differences in size, shape, and slope angle.

Pyroclastic materials are generally associated with which type of magma(s)?