geographyalltheway.com

Online Geography Resources

 

Measuring Earthquakes

 
Geography Starter

Starter

 
Watch these 'cheesy' videos as an introduction to measuring earthquakes:
 
 
 
Geography Activities

Activities

 

There are two ways to measure earthquakes:

  1. The Richter Scale: a single number that measures the amount of energy released by an earthquake.
  2. The Modified Mercalli Scale: a range of figures (I to XII) that reflect the damage caused by the earthquake in different areas.
 
Click on these images to see larger versions:
Richter Scale
Modified Mercalli Scale
Richter Scale
Modified Mercalli Scale - detailed explanation
 

Richter Scale

Is there a direct link between the energy released by an earthquakes (it's value on the Richter Scale) and the number of people killed?

  1. Download this Geography Spreadsheet Excel document.
  2. Use this website to complete the table: USGS Earthquake Hazard Program
  3. Click on the Chart1 tab at the bottom of the Excel document to see the chart that the data you have inputted has plotted.
  4. Is there a link between Richter Scale and the number of deaths or are other factors more important?
 

Modified Mercalli Scale

  1. Download this worksheet.
  2. Use the descriptions on Wikipedia.org - Mercalli_Intensity_Scale to produce a series of cartoons that show each of the categories of the Modified Mercalli Scale.
 
Geography Review
Homework

Review and Homework Task

 
Learn these eight mini case studies:
Date
Location
Approximate Death Toll
Magnitude [Richter Scale]
Notes
26 / 01 / 2001
Gujarat, India
20,000
7.6
Stress caused by the Indian Plate pushing northwards towards the Eurasian Plate.
25 / 03 / 2002
Afghanistan
1,000
6.1
Landslides blocked roads in the epicentral area.
21 / 05 / 2003
Algeria
2,200
6.8
Caused a tsunami which sank 10 boats on the Spanish coast.
26 / 12 / 2003
Iran
31,000
6.6
Maximum damage (IX) caused in city of Bam.
26 / 12 / 2004
Sumatra, Indonesia
225,000
9.1
Caused a massive tsunami which affected 14 countries.
08 / 10 / 2005
Pakistan
86,000
7.6
Entire villages were destroyed in northern Pakistan.
26 / 05 / 2006
Indonesia
5,700
6.3
Loss estimated at 3.1 billion US $.
12 / 05 / 2008
China
87,000
7.9
More that 45.5 million people affected. Estimated that 5.36 million buildings collapsed.
 
 

 geographyalltheway.com on facebook
Instagram
Follow @gatwUpdates on twitter
flickr
Contact geographyalltheway.com
© 2006-2021 - All Rights Reserved - Author: Richard Allaway | Logout