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# Subject: Geoscience

# Quantitative Skills Show all Quantitative Skills

## Algebra

33 matchesResults 1 - 10 of **33 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 Community College

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

How Fast Do Materials Weather? part of Starting Point-Teaching Entry Level Geoscience:Interactive Lectures:Examples

Rebecca Teed, Wright State University-Main Campus

A think-pair-share activity in which students calculate weathering rates from tombstone weathering data. -

Continental Crust Mass Balance Calculation part of Quantitative Skills:Activity Collection

Jennifer Wenner, University of Wisconsin-Oshkosh

A quantitative skills-intensive exercise using data from the Mineral Mountains, Utah, to calculate mass balance and to address the "space problem" involved with emplacing plutons into the crust.

Radiometric Dating part of Quantitative Skills:Activity Collection

Related Links
Radioactive Decay
Exponential Growth and Decay
Peter Kohn - James Madison University
Christopher Gellasch - U.S. Military Academy
Jim Sochacki - James Madison University
Scott Eaton - James Madison University
Richard Ford - Weber State University

This activity leads students through derivations of the equations associated with radiometric dating.

Quantitative Classroom Exercises part of Quantitative Skills:Activity Collection

Steven Schafersman, University of Texas of the Permian Basin, The

The four exercises give students an opportunity to use their knowledge of graphs, algebra, and maps to solve simple geological problems.

Density of Earth - Using Some Field Data part of Quantitative Skills:Activity Collection

Len Vacher, Dept of Geology, University of South Florida

This module addresses the problem of how to determine the density of the earth and has students do some field experiments to get the data they need to answer the problem.

The Earth's Shells - Density vs. Depth part of Quantitative Skills:Activity Collection

Len Vacher, Dept of Geology, University of South Florida

In this module, students are asked to devise a way of graphically plotting the density variations with depth in the Earth.

Weathering of Minerals part of Quantitative Skills:Activity Collection

Wendy Van Norden, harvard-westlake school

Students determine the % change in mass of mineral samples that have been placed in a rock tumbler. They graph the relationship between the hardness of the mineral and the % change in mass. They then consider why some of the mineral samples do not conform the the relationship they graphed. They investigate the physical properties of the outliers and consider how the physical properties contributed to the rate of weathering, and what kind of weathering occured in the rock tumbler.

Reading Topographic Maps and Calculating Map Scale part of Quantitative Skills:Activity Collection

Leslie Kanat, Johnson State College

Use a topographic map to deliniate a watershed, draw a map bar scale, and calculate a map ratio scale.