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# Mountain Building - PowerPoint PPT Presentation

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

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

• Which type of fault (p. 312) could result in having older rock layers on top of younger rock layers?

• 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

Objectives 9/29/10

• I will be able to… DESCRIBE THE FACTORS AFFECTING ______________________

• I will be able to… DIFFERENTIATE BETWEEN THE ________________CAUSING ROCK DEFORMATION

• __________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

• Rocks are strong- but no matter how strong, there is a point when rocks will ____________

• Deformation refers to __________________ _____________________________________

• Most deformation occurs along _____margins

• 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 _______ _____________________

• The ____________ that is caused by stress on rocks is called _____________

• Factors influencing the strength of a rock and how it will deform:

• ____________

• ___________types

• Confining ____________

• ___________

• ______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 _______

• 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

• _________ - pull apart

• __________ - squeeze together

• _______ - top and bottom are pushed

in different directions

• Can you think of some examples of each type of stress?

• Tensional

• Compressional

• Shear

• Brainstorm examples of the different types of stress from life: (at least 3 types for each)

Tensional

Compressional

Shear

• Choose one example from the list for each type of stress.

• Write 2 sentences explaining the affect the stress has in each example.

• 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.

• 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?