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Mountain Building . Chapter 11 September 29, 2010. Complete the following using Ch . 11 of your textbook (page 308 ) on your warm up doc: Define deformation Define stress Define strain List the three types of deformation List the three types of stress

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mountain building

Mountain Building

Chapter 11

September 29, 2010

slide2
Complete the following using Ch. 11 of your textbook (page 308) on your warm up doc:
    • Define deformation
    • Define stress
    • Define strain
    • List the three types of deformation
    • List the three types of stress
    • Which type of fault (p. 312) could result in having older rock layers on top of younger rock layers?
exploratory lab
Exploratory Lab
  • In groups, you are going to complete the Inquiry Activity on page 307
    • Be careful with the sticks- if you do not behave maturely, you will not be allowed to do labs
  • Record your observations for Steps 1-4 and answer the Think About Itquestions
objectives 9 29 10
Objectives 9/29/10
  • I will be able to… DESCRIBE THE FACTORS AFFECTING ______________________
  • I will be able to… DIFFERENTIATE BETWEEN THE ________________CAUSING ROCK DEFORMATION
key points
Key Points
  • __________occurs when there is a change in the size and/or shape of a rock body
  • Deformation is caused by movements of tectonic plates and interactions at plate boundaries
    • Types of deformation: ductile, elastic and brittle
  • _______is the force per unit area that is acting on a solid
    • Types of stress: compressional, tensional, shear
  • Strain is the change in shape of a rock as a result of stress
rock deformation
Rock Deformation
  • Rocks are strong- but no matter how strong, there is a point when rocks will ____________
  • Deformation refers to __________________ _____________________________________
  • Most deformation occurs along _____margins
rock deformation1
Rock Deformation
  • Deformation is the result of ________
  • Stress is the ________ per unit area that is acting on a solid
  • When a rock is put under more stress than it can handle it will deform- usually by _______ _____________________
rock deformation2
Rock Deformation
  • The ____________ that is caused by stress on rocks is called _____________
  • Factors influencing the strength of a rock and how it will deform:
    • ____________
    • ___________types
    • Confining ____________
    • ___________
types of deformation
Types of Deformation
  • ______deformation: rocks _______to their original size and shape when the force is removed
    • Stress is applied ____________
  • _______deformation: rocks _______and fracture
    • Temperatures and confining pressures are ______
  • _____________deformation: rocks change their shape and size _________________
    • Temperatures and confining pressures are _______
factors affecting deformation
Factors Affecting Deformation
  • Temperature and Pressure
    • __________temperatures and pressure increase the likelihood the rock will show __________deformation
  • Rock Type
    • Rocks with _______bonds usually show brittle deformation
    • Sedimentary and foliated metamorphic rocks are more likely to show ductile deformation
  • Time
    • Forces that might not deform a rock at first can cause a rock to show _______deformation if applied over a long period of time
types of stress
Types of Stress
  • _________ - pull apart
  • __________ - squeeze together
  • _______ - top and bottom are pushed

in different directions

types of stress1
Types of Stress
  • Can you think of some examples of each type of stress?
    • Tensional
    • Compressional
    • Shear
examples of stress
Examples of Stress
  • Brainstorm examples of the different types of stress from life: (at least 3 types for each)

Tensional

Compressional

Shear

examples of stress1
Examples of Stress
  • Choose one example from the list for each type of stress.
  • Write 2 sentences explaining the affect the stress has in each example.
predicting stress
Predicting Stress
  • PREDICT what sort of affect each of those types of stress might have on a mountain being formed.
  • Write 2 sentences explaining the affect each type of stress might have on a new mountain.
check in
Check-in
  • Define deformation:
  • What are the 3 types of rock deformation?
  • What type of deformation involves rocks returning to their original shape and size after stress is removed?
  • What type of deformation involves rocks permanently changing shape without fracturing?
  • What are the three types of stress?
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