6 Earthquakes

Lesson 6.1 - Earthquakes and Plate Boundaries

Earthquakes occur when elastic strain energy builds up to the point that rocks break and move along fault lines.

BBC - animation

Lesson 6.2 - Earthquakes and Seismic Waves

As rocks break and move, some of the elastic strain energy that had built up is released as seismic waves. These waves of energy travel outward from the focus. Most of the damage from earthquakes results from these seismic waves.

Lesson 6.3 - Measuring Earthquakes

Magnitude scales are used to measure the energy released by an earthquake. In contrast, the intensity of an earthquake is estimated according to the amount of shaking, and therefore damage, endured in an area.

http://www.classzone.com/books/earth_science/terc/content/investigations/es1001/es1001page02.cfm?chapter_no=investigation
http://www.classzone.com/books/earth_science/terc/content/visualizations/es1009/es1009page01.cfm?chapter_no=10

ck12.org

classzone.com

http://seismo.berkeley.edu/outreach/activities.html
http://oceanexplorer.noaa.gov/edu/learning/1_plate_tectonics/plate_tectonics.html
http://www.phschool.com/atschool/phsciexp/active_art/seismic_waves/index.html

seismo.berkeley.edu

Finding the Epicenter

oceanexplorer.noaa.gov

http://www.geo.mtu.edu/UPSeis/locating.html
http://studyjams.scholastic.com/studyjams/jams/science/rocks-minerals-landforms/earthquakes.htm

phschool.com

geo.mtu.edu

http://www.bbc.co.uk/schools/gcsebitesize/science/21c/earth_universe/seismic_wavesrev1.shtml
http://www.pbs.org/wnet/savageearth/animations/tsunami/main.html

pbs.org/wnet/savageearth/animations/tsunami

How Tsunamis Work video

http://tsunami.org/7science/11_animations.html