earthquake machine lite michael hubenthal - iris; larry braile - purdue university; john lahr -...

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Earthquake Machine Lite Michael Hubenthal - IRIS; Larry Braile - Purdue University; John Lahr - USGS; John Taber - IRIS Mechanical Modeling to Increase Student Understanding of Complex Earth Systems

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Page 1: Earthquake Machine Lite Michael Hubenthal - IRIS; Larry Braile - Purdue University; John Lahr - USGS; John Taber - IRIS Mechanical Modeling to Increase

Earthquake Machine Lite

Michael Hubenthal - IRIS; Larry Braile - Purdue University; John Lahr - USGS; John Taber - IRIS

Mechanical Modeling to Increase Student

Understanding of Complex Earth Systems

Page 2: Earthquake Machine Lite Michael Hubenthal - IRIS; Larry Braile - Purdue University; John Lahr - USGS; John Taber - IRIS Mechanical Modeling to Increase

Guiding Question(s)

What is an earthquake?

What is the role of a model in science?

How are scientific ideas constantly changing?

Page 3: Earthquake Machine Lite Michael Hubenthal - IRIS; Larry Braile - Purdue University; John Lahr - USGS; John Taber - IRIS Mechanical Modeling to Increase

Have you even been outside at night and felt nervous or frightened?

Calvin and Hobbes by Bill Watterson

Page 4: Earthquake Machine Lite Michael Hubenthal - IRIS; Larry Braile - Purdue University; John Lahr - USGS; John Taber - IRIS Mechanical Modeling to Increase

Will the flashlight help us feel better here?

Page 5: Earthquake Machine Lite Michael Hubenthal - IRIS; Larry Braile - Purdue University; John Lahr - USGS; John Taber - IRIS Mechanical Modeling to Increase

QuickTime™ and aCinepak decompressor

are needed to see this picture.

QuickTime™ and aCinepak decompressor

are needed to see this picture.

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

Page 6: Earthquake Machine Lite Michael Hubenthal - IRIS; Larry Braile - Purdue University; John Lahr - USGS; John Taber - IRIS Mechanical Modeling to Increase

Answer the following question on your sticky note…

What is an Earthquake? What is an Earthquake? ??

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Page 7: Earthquake Machine Lite Michael Hubenthal - IRIS; Larry Braile - Purdue University; John Lahr - USGS; John Taber - IRIS Mechanical Modeling to Increase

Cal

vin

and

Hob

bes

by B

ill W

atte

rson

Page 8: Earthquake Machine Lite Michael Hubenthal - IRIS; Larry Braile - Purdue University; John Lahr - USGS; John Taber - IRIS Mechanical Modeling to Increase

B

C

EQ Machine - Lite

Top View

CRubber Band

Thin Tape Measure

Wood Block w/ SandpaperTape Measure

Sandpaper

Wood Block Guide

Page 9: Earthquake Machine Lite Michael Hubenthal - IRIS; Larry Braile - Purdue University; John Lahr - USGS; John Taber - IRIS Mechanical Modeling to Increase

B

C

EQ Machine - Lite

Top View

Bulk of the Plate

Edge of the Plate

Elastic Properties of Earth Materials Plate has Constant

Velocity Here of 1cm/year

Page 10: Earthquake Machine Lite Michael Hubenthal - IRIS; Larry Braile - Purdue University; John Lahr - USGS; John Taber - IRIS Mechanical Modeling to Increase

Seismic MomentMo = fault length x fault width x displacement x rigidity

Moment Magnitude = Mw = log Mo/1.5 – 10.7

Page 11: Earthquake Machine Lite Michael Hubenthal - IRIS; Larry Braile - Purdue University; John Lahr - USGS; John Taber - IRIS Mechanical Modeling to Increase

Seismic MomentMo = fault length x fault width x displacement x rigidity

Visualizing magnitude with the model

B

Moment Magnitude = Mw = log Mo/1.5 – 10.7

Page 12: Earthquake Machine Lite Michael Hubenthal - IRIS; Larry Braile - Purdue University; John Lahr - USGS; John Taber - IRIS Mechanical Modeling to Increase
Page 13: Earthquake Machine Lite Michael Hubenthal - IRIS; Larry Braile - Purdue University; John Lahr - USGS; John Taber - IRIS Mechanical Modeling to Increase

Distant forces cause a gradual build up of stress in the earth over tens or hundreds or thousands of years, slowly distorting the earth underneath our feet. Eventually, a pre-existing weakness in the earth--called a fault or a fault zone--can not resist the strain any longer and fails catastrophically.

Elastic Rebound Theory

Page 14: Earthquake Machine Lite Michael Hubenthal - IRIS; Larry Braile - Purdue University; John Lahr - USGS; John Taber - IRIS Mechanical Modeling to Increase