# Examples

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How Does Surface Deformation at an Active Volcano Relate to Pressure and Volume Change in the Magma Chamber? part of Pedagogy in Action:Library:Teaching with SSAC:Examples

SSAC Physical Volcanology module. Students build a spreadsheet to examine and apply the Mogi model for horizontal and vertical surface displacement vs. depth and pressure conditions in the magma chamber.

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Porosity and Permeability of Magmas part of Pedagogy in Action:Library:Teaching with SSAC:Examples

SSAC Physical Volcanology module. Students build a spreadsheet for an iterative calculation to find volume of bubbles and hence porosity, permeability and gas escape as a function of depth.

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What is the Volume of the 1992 Eruption of Cerro Negro Volcano, Nicaragua? part of Pedagogy in Action:Library:Teaching with SSAC:Examples

SSAC Physical Volcanology module. Students build a spreadsheet to calculate the volume a tephra deposit using an exponential-thinning model.

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What is the Volume of a Debris Flow? part of Pedagogy in Action:Library:Teaching with SSAC:Examples

SSAC Physical Volcanology module. Students build a spreadsheet to estimate the volume of volcanic deposits using map, thickness and high-water mark data from the 2005 Panabaj debris flow (Guatemala).

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Bubbles in Magmas part of Pedagogy in Action:Library:Teaching with SSAC:Examples

SSAC Physical Volcanology module. Students build a spreadsheet and apply the ideal gas law to model the velocity of a bubble rising in a viscous magma.

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How Do We Estimate Magma Viscosity? part of Pedagogy in Action:Library:Teaching with SSAC:Examples

SSAC Physical Volcanology module. Students build a spreadsheet to examine how magma viscosity varies with temperature, fraction of crystals, and water content using the non-Arrhenian VFT model.

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How are Flow Conditions in Volcanic Conduits Estimated? part of Pedagogy in Action:Library:Teaching with SSAC:Examples

SSAC Physical Volcanology module. Students build a spreadsheet to calculate velocity of rising magma in steady-state Plinian eruptions using conservation of mass and momentum.

How Do We Estimate Melt Density? part of Pedagogy in Action:Library:Teaching with SSAC:Examples

SSAC Physical Volcanology module. Students build spreadsheets to estimate melt density at high temperatures and pressures from the thermodynamic properties of silicates.

Lithospheric Density part of Pedagogy in Action:Library:Teaching with SSAC:Examples

Students learn about the weighted mean by building spreadsheets that apply this concept to the average density of the oceanic lithosphere.

The Manning Equation part of Pedagogy in Action:Library:Teaching with SSAC:Examples

Spreadsheets Across the Curriculum Module. Students build spreadsheets to estimate discharge for a culvert using the Manning equation, and to estimate culvert size, given a specified discharge.