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Quantitative Skills

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Geologic Time Calculations part of Quantitative Skills:Activity Collection
Francisco San Juan, Elizabeth City State University
Radiometric age determination using parent/daughter composition and a radiometric decay curve.

Gulf Anoxia Course Project part of Quantitative Skills:Activity Collection
Sadredin Moosavi, Tulane University of Louisiana
In this activity students work in groups to investigate the problem of Gulf of Mexico hypoxia before developing mitigation strategies based on local contriubtions to the problem. The students present their ideas in a public meeting debate format from which a solution must be selected by the entire class.

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.

Back-of-the-Envelope Calculations: Eruption Rates part of Quantitative Skills:Activity Collection
Barb Tewksbury, Hamilton College
Question Over the last 70 million years or so, the Hawaiian Hot Spot has been pumping out lava, a total of about 775,000 km3 worth. As the Pacific Plate has moved over the hot spot, the volcanic peaks and plateaus ...

How are Flow Conditions in Volcanic Conduits Estimated? 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 velocity of rising magma in steady-state Plinian eruptions using conservation of mass and momentum.

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.

Machines that change climate: Porsche 911 Turbo vs. Toyota Prius part of Quantitative Skills:Activity Collection
Kevin Harrison, McDaniel College
This problem illustrates how consumer decisions can influence carbon dioxide levels in the atmosphere, how to make back-of-the-envelope calculations, and demonstrates the power of exponential growth.

Back-of-the-Envelope Calculations: Energy Released in an Earthquake part of Quantitative Skills:Activity Collection
Barb Tewksbury, Hamilton College
Question A magnitude 8.5 earthquake (such as the 1964 Good Friday earthquake in Alaska) releases about 1x1018 joules of energy. The atomic bomb exploded over Hiroshima released about 1.5x1013 joules of energy. How ...

Back-of-the-Envelope Calculations: Age of the Earth part of Quantitative Skills:Activity Collection
Barb Tewksbury, Hamilton College
Question The Earth is about 4.6 billion years old. Let's try to get a perspective on how long that really is. Suppose that you decided to count to 4.6 billion and that you counted 1 number every second. How ...

Back-of-the-Envelope Calculations: Approaching Asteroid part of Quantitative Skills:Activity Collection
Barb Tewksbury, Hamilton College
Question If asteroids careen through the solar system at 25 km/second, how far away would we have to detect one in order to have a year's notice to prepare for an impact, as was portrayed in the movie Deep ...



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