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Stress

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Transcript

  • 1. StressBy David Capo
  • 2. What is stress?• Stress is the forces that push and pull on the Earths crust, causing its deformation.• Stress comes in the forms of compression, tension and shearing.
  • 3. What do the types of stress do? Stress Compression Tension Shearing Moves rocks close together. Pulls on the rocks of the crust. Pushes rocks in two opposite directions. Makes rocks denser and smaller. Rocks become thinner in the middle. Rocks get twisted and they tear apart.Rocks pushed higher up and deeper down, Volume of rocks increase, density decrease. Rocks are just bended or broken.
  • 4. Stress and Earth» Stress can lead to earthquakes and faults.» Faults can be either strike-slip faults and thrust faults.» Both faults and earthquakes are dangerous to modern human society.
  • 5. What are faults? Faults are breaks or cracks along which rocks move. Faults are usually made when shearing occurs. As I stated before, faults come in strike-slip faults and thrust faults as well as their normal form which does not have a specific name.
  • 6. What you have learnedAnswer these two questions on what you have learned during this presentation.What does stress cause? Say one thing that each of these stress-caused occurrences do.What are the different types of faults?
  • 7. Sources• Prentice Hall. "1-1 Earths Changing Surface.” Dynamic Earth. Second Edition. 1994. Print.

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