# SSAC Physical Volcanology Modules

Following are short descriptions of the available modules. To access any of them, select from the list and you will connect to cover material including learning goals, context of use, and other information. Within the cover material (under "Teaching Materials") there is a link by which you can download the student version of the module. You can also request an instructor's version by clicking on the "request" link under Teaching Materials.

There are a couple of ways of searching for modules. The box below left provides a full-text search of the cover material about the module, so you can search by author, subject, or keyword. The controlled vocabularies below right allow targeted searches by three different dimensions (click on the links to see the full, hierarchical vocabularies): Math content (Quantitative Concept) (Microsoft Word 41kB Jun17 10), Context (Subject) (Microsoft Word 29kB Jul13 07), and Excel Skill (Microsoft Word 32kB Jul13 07).

[Nine modules have been created and implemented in courses. They are undergoing a final round of edits and will be posted momentarily.]

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## Quantitative Concepts

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# Excel Skills

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What is the Volume of the 1992 Eruption of Cerro Negro Volcano, Nicaragua? part of Examples
SSAC Physical Volcanology module. Students build a spreadsheet to calculate the volume a tephra deposit using an exponential-thinning model.

Quantitative Concepts: Measurement; Data presentation and analysis; Probability:Visual display of data :XY scatter plots, Geometry; Trigonometry :Circles (including radians and pi), Algebra; Modeling; Functions:Manipulating equations, Basic arithmetic; Number sense:Logarithms; orders of magnitude; scientific notation, Estimation, Unit conversions, Algebra; Modeling; Functions:Straight lines and linear functions:Slope, intercept; linear trends, Algebra; Modeling; Functions:Nonlinear functions of a single variable:Exponential decay, Logarithmic function
Subject: Social science:History, Natural science:Earth science, Physics
Excel Skills: Other Elementary Math Functions:LN, EXP, Basic Arithmetic:Arithmetic Functions:PRODUCT, Graphs and Charts:XY Scatterplot:One Plot, Trendlines, Other Elementary Math Functions:POWER

How Does Surface Deformation at an Active Volcano Relate to Pressure and Volume Change in the Magma Chamber? part of 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.

Quantitative Concepts: Measurement; Data presentation and analysis; Probability:Descriptive statistics; trend lines :Goodness of fit (R2), Measurement; Data presentation and analysis; Probability:Visual display of data :XY scatter plots, Basic arithmetic; Number sense:Estimation, Unit conversions, Ratio and proportion; percentage; interpolation, Algebra; Modeling; Functions:Manipulating equations, Modeling:Forward modeling, Measurement; Data presentation and analysis; Probability:Visual display of data :Logarithmic scale, Geometry; Trigonometry :Spheres
Subject: Natural science:Physics, Earth science
Excel Skills: Angles and Trig Functions:PI, Basic Arithmetic:Nested Formulas, Simple Formulas, Graphs and Charts:XY Scatterplot:Multiple Plots, Log Scale

How are Flow Conditions in Volcanic Conduits Estimated? part of 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.

Quantitative Concepts: Measurement; Data presentation and analysis; Probability:Visual display of data :XY scatter plots, Basic arithmetic; Number sense:Ratio and proportion; percentage; interpolation, Rates, Estimation
Subject: Natural science:Physics, Chemistry, Earth science
Excel Skills: Angles and Trig Functions:PI, Basic Arithmetic:Simple Formulas, Graphs and Charts:XY Scatterplot:Multiple Plots

What is the Volume of a Debris Flow? part of 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).

Quantitative Concepts: Measurement; Data presentation and analysis; Probability:Uncertainty:Effect of uncertainty; sensitivity, Measurement; Data presentation and analysis; Probability:Visual display of data :XY scatter plots, Basic arithmetic; Number sense:Estimation, Measurement; Data presentation and analysis; Probability:Uncertainty:Error; relative error, Basic arithmetic; Number sense:Average; weighted average, Significant figures, Measurement; Data presentation and analysis; Probability:Gathering data , Geometry; Trigonometry :Other plane figures
Subject: Natural science:Physics, Social science:Geography, History, Business, economics and finance :Economics, Natural science:Earth science
Excel Skills: Graphs and Charts:XY Scatterplot:One Plot, Basic Arithmetic:Simple Formulas