Send the link below via email or IMCopy
Present to your audienceStart remote presentation
- Invited audience members will follow you as you navigate and present
- People invited to a presentation do not need a Prezi account
- This link expires 10 minutes after you close the presentation
- A maximum of 30 users can follow your presentation
- Learn more about this feature in our knowledge base article
Do you really want to delete this prezi?
Neither you, nor the coeditors you shared it with will be able to recover it again.
Make your likes visible on Facebook?
You can change this under Settings & Account at any time.
Transcript of Earthquakes
to reach balance or isostasy. Isostatic adjustment causes stress in the rocks 3 types of stress
Shearing crustal rocks are squeezed together pulls rocks apart pushes rocks in opp. horizontal directions Folding - response to stress without breaking the rock 3 types of folding-
anticline - upcurved folds
syncline - downcurved folds
monocline - dipping bends Faulting - response to stress where
rocks break due to cooling temp.
and low pressure 4 types of Faults
Strike-slip Fault Fault - movement of rocks along a break Earthquakes - vibrations of the earth's crust Elastic Rebound Theory - theory that rocks that are strained past a certain point will fracture and spring back to their original shape video? This movement releases energy in the form of vibrations called seismic waves Name two seismic waves aftershock - tremor that follows and is smaller than a
major earthquake Focus vs. Epicenter
Where slippage first occurs is the focus
The point on the earth's surface directly above the focus is the epicenter http://www.forgefx.com/casestudies/prenticehall/ph/seismic/seismic-waves-simulator.htm 3 types of focus
Shallow - <70km (most damage)
Intermediate - 70km - 300km
Deep - 300km - 650km
why not deeper? Major Earthquake Zones
Pacific Ring of Fire
Eurasian-Melanesian Mountain Belt Fault Zones - group of interconnected faults
ex. San Andres Fault Seismograph - instrument used to detect seismic waves Locating an Earthquake Earthquake Measurements -
used to measure the magnitude or intensity of an earthquake Richter Scale - measures magnitude 0 - 10
Mercalli Scale - measures intensity I - XII (roman numerals) Earthquake destructions Seismic Gap -place where the fault is locked and unable to move seismic gaps could represent areas of future earthquakes P Waves
Surface Waves (L waves)? http://www.sciencecourseware.org/virtualearthquake/