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Earthquakes

Earthquakes. NCES 6.E.2.2. Kim Lachler 2010. Deformation. Process by which the shape of a rock changes because of stress. Deformation. Compression –stress squeezes an object. Deformation. Tension – stress stretches an object. Deformation. Folding

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Earthquakes

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  1. Earthquakes NCES 6.E.2.2 Kim Lachler 2010

  2. Deformation • Process by which the shape of a rock changes because of stress.

  3. Deformation • Compression –stress squeezes an object

  4. Deformation • Tension – stress stretches an object

  5. Deformation • Folding – stress causes bending

  6. Faulting Earthquakes.mov • a break in a body of rock along which one block slides relative to another • Fault blocks – blocks on each side of the fault Hanging wall - hang from it without touching it Foot wall - like a ramp

  7. Faulting • Normal Fault – rocks are pulled apart by tension What is this called for tectonic plate boundaries? Divergent

  8. Faulting • Reverse Fault – rocks are pushed together by compression What is this called for tectonic plate boundaries? Convergent

  9. Faulting • Strike- Slip fault – rocks are moved horizontally by opposing forces What is this called for tectonic plate boundaries? Transform

  10. Building of Mountains • Folded Mountains – when rock layers are squeezed together and pushed upward The Himalayas

  11. Building of Mountains • Fault-Block Mountains – When tension causes rock to break along a series of normal faults, resulting in different heights Hanging Hills Connecticut

  12. Building of Mountains • Volcanic Mountains – along convergent boundaries Baker Mountain, Washington

  13. Bibliography • Holt, Rinehart & Winston, North Carolina, Holt, Rinehart & Winston, Orlando, Fl, 2005 • USGA, tension stress, http://earthquake.usgs.gov/learn/glossary/?term=tensional stress, accessed 10/04/10 • Fold Mountains, http://en.wikipedia.org/wiki/Fold_mountain, accessed 10/04/10 • Fold, http://en.wikipedia.org/wiki/Fold_(geology)#Fold_terminology_in_two_dimensions, accessed 10/04/10 • Fault, http://en.wikipedia.org/wiki/Fault_(geology), accessed 10/04/10 • Mountain formation, http://en.wikipedia.org/wiki/Mountain_formation#Fold_mountains, acessed 10/04/10 • Fault-Block mountains, http://en.wikipedia.org/wiki/Fault-block_mountain, accessed 10/04/10 • Ask images, http://www.ask.com/pictures?qsrc=167&o=13755&l=dis&q=Earthquake%20Faults, accessed 10/04/10

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