# Activities

## Materials for Lab and Class

Help

# Show all Resources

# Subject: Geoscience

# Quantitative Skills Show all Quantitative Skills

- Exponential Growth and Decay 6 matches
- Logarithms 18 matches

## Logarithms/Exponential Functions

17 matches General/OtherResults 1 - 10 of **34 matches**

Estimating Exchange Rates of Water in Embayments using Simple Budget Equations. part of Quantitative Skills:Activity Collection

Keith Sverdrup, University of Wisconsin-Milwaukee

Simple budgets may be used to estimate the exchange of water in embayments that capitalize on the concept of steady state and conservation principals. This is especially true for bays that experience a significant exchange of freshwater. This exchange of freshwater may reduce the average salt concentration in the bay compared to seawater if it involves addition of freshwater from rivers, R, and/or precipitation, P. Alternatively, it may increase the average salt concentration in the bay compared to seawater if there is relatively little river input and high evaporation, E. Since freshwater input changes the salt concentration in the bay, and salt is a conservative material, it is possible to combine two steady state budgets for a bay, one for salt and one for water, to solve for the magnitude of the water flows that enter and exit the bay mouth. Students will make actual calculations for the inflow and outflow of water to Puget Sound, Washington and the Mediterranean Sea and compare them to actual measured values.

Two streams, two stories... How Humans Alter Floods and Streams part of Quantitative Skills:Activity Collection

Eric Baer, Highline College

An activity/lab where students determine the changes in 100-year flood determinations for 2 streams over time.

Understanding Radioactivity in Geology: The Basics of Decay part of Quantitative Skills:Activity Collection

Christina Stringerâ€”University of South Florida, Tampa FL 33620
This activity was developed for Spreadsheets Across the Curriculum . National Science Foundation, DUE 0442629.

PowerPoint module leading students through creation and manipulation of spreadsheet to forward model an example of exponential decayâ€”the number of remaining unpopped kernels of popcorn in a bag of popping popcorn.

What is the Relationship between Lava Flow Length and Effusion Rate at Mt Etna? part of Pedagogy in Action:Partners:Spreadsheets Across the Curriculum:Physical Volcanology:Examples

chuck connor

SSAC Physical Volcanology module. Students use Excel to determine a log-log relationship for flow length vs effusion rate and compare it with a theoretical expression for the maximum flow length.

What is the Volume of the 1992 Eruption of Cerro Negro Volcano, Nicaragua? part of Pedagogy in Action:Partners:Spreadsheets Across the Curriculum:Physical Volcanology:Examples

chuck connor

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

How Do We Estimate Magma Viscosity? part of Pedagogy in Action:Partners:Spreadsheets Across the Curriculum:Physical Volcanology:Examples

chuck connor

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.

Viscosity of the Mantle: Constraints from Post-glacial Rebound part of Quantitative Skills:Activity Collection

David Kohlstedt, University of Minnesota

This laboratory experiment emphasizes the exponential nature of post-glacial rebound and reinforces the relationship between the rate of rebound and the viscosity of the mantle.

Using Melting Ice to Teach Radiometric Dating part of Quantitative Skills:Activity Collection

Developed by Donald Wise, Franklin and Marshall College. Taken from Wise, 1990 . Related Links
Radioactive Decay

Students are challenged to a Sherlock Holmes-style mystery in which they construct their own decay curves of melting ice to determine time-zero.

Determining Earthquake Probability and Recurrence from Past Seismic Events part of Quantitative Skills:Activity Collection

Eric Baer, Highline College

A homework/classroom activity where students collect historical earthquake information and use it to forecast the probability of larger earthquakes.

Exploring Radiometric Dating with Dice part of Quantitative Skills:Activity Collection

Carla Whittington derived from Baer (1999)
Related Links Radioactive Decay ProbabilityExponential Growth and Decay

An activity in which students use dice to explore radioactive decay and dating and make simple calculations.