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Chapter 4 Lesson 1: Forces In Earth's Crust 1. How Does Stress Change Earth's Crust?

Chapter 4 Lesson 1: Forces In Earth's Crust 1. How Does Stress Change Earth's Crust? 2. How Do Faults Form 3. How Does Plate Movement Create New Landforms?. Stress & Change > The Earth's crust is sorta like a candy bar. ------> What the heck do I mean? . 1.

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Chapter 4 Lesson 1: Forces In Earth's Crust 1. How Does Stress Change Earth's Crust?

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  1. Chapter 4 Lesson 1: Forces In Earth's Crust 1. How Does Stress Change Earth's Crust? 2. How Do Faults Form 3. How Does Plate Movement Create New Landforms?

  2. Stress & Change > The Earth's crust is sorta like a candy bar. ------> What the heck do I mean?

  3. 1 A force that acts on rock to change its shape or volume is known as what? A Force B Stress C Movement D Energy

  4. Key Answer: Tension, compression and shearing work over millions of years to change the shape and volume of rock! >This occurs slowly and therefore you cannot see the change happening.

  5. 2 Which is this... A Tearing B Tension C Compression D Shearing E Erosion F Force

  6. TENSION >Rock is stretched so it becomes thinner > Crust acts like bubble gum 2. Tension - The stress force that on crust and thins it in the middle ---> Occurs where 2 plates pull apart ---> What type of Boundary is that?

  7. 3 What is this... A Tearing B Tension C Compression D Shearing E Erosion F Force

  8. Shearing > Plates move in 2 opposite directions > Like grinding 2 bricks 2gether 4. Shearing - stress force that pushes a mass of rock in 2 opposite directions -------> Can cause rock to break & slip apart ------> Occurs where to plates slip past each other ------> What Type Of Boundary Is This?

  9. 4 What is this... A Tearing E Erosion C Compression B Tension D Shearing F Force

  10. Compression > One plate pushing on another squeezes the rock > Like a giant trash compactor 3. Compression- The stress force that squeezes rock until it folds or breaks ----> Occurs when 2 plates come together ----> What Type of Boundary is That?

  11. 5 How Do Faults Form A When enough stress builds up in rock, the rock breaks, creating a fault B When the convection currents move plates into each other creating boundaries C When energy from the sun allows plates to drift in different directions D When forces inside Earth create magnetic forces that create stress and change the surface

  12. Forming Faults > What is a fault? --> Break in the crust where rock surfaces move past each other

  13. 6 There are 3 main types of faults. What are they? E Compact A Normal F Convergent B Irregular C Strike-slip G Paramount H Crash-Tectonic D Reverse

  14. 7 What type of fault line is this? A Compact B Normal C Strike-slip D Reverse

  15. Normal Faults 5. Normal Fault- Type of fault where the hanging wall slides downward; caused by tension in the crust > The rock that sits over the rock is the Hanging Wall > The rock that lies under the fault is called the Foot Wall

  16. Label The Hanging Wall & Foot Wall

  17. 8 Normal Faults occur where 2 plates... A Transform B Converge C Diverge D Raise Up

  18. 9 What type of fault line is this? A Compact B Normal C Reverse D Strike-slip

  19. Reverse Faults > 6. Reverse Fault- Type of fault where the hanging wall slides upward; caused by compression in the crust > Same structure as a normal fault but the plates move in the opposite direction (Thus the name reverse!) > The hanging wall moves up and the foot wall moves down

  20. Label The Hanging Wall & Foot Wall

  21. 10 Reverse Faults occur where 2 plates... A Emerge B Transform C Converge D Diverge

  22. 11 What type of fault is this? A Strike-slip B Normal C Reverse D Compact

  23. Strike-Slip Faults 6. Strike-slip Fault- Type of fault in which rocks on either side move past each other sideways, with little up or down motion > Produced from shearing > Transform boundary

  24. Label The Hanging Wall & Foot Wall

  25. 12 What type of fault is this? A Compression B Normal C Reverse D Strike-slip

  26. 13 What type of fault is this? A Compression B Normal C Reverse D Strike-slip

  27. 14 What type of fault is this? A Compression B Normal C Reverse D Strike-slip

  28. Plate Movement & Landforms Key Answer: Over millions of years, the forces of plate movement can change a flat plain into features such as anticlines, synclines, folded mountains, fault-block mountains, & plateaus

  29. 15 What are anticlines and synclines? A Upward & downward folds in rock B Term for valleys and mountains C Shearing of continental & oceranic crusts D Rise of mountains and volcanoes

  30. Label the Anticline & Syncline

  31. How do folded mountains form > Collision of 2 plates can cause compression & folding mountains to form > Himalayas & Alps are folded mountains > Folded mountain ranges are made up of a series of anticlines and synclines........Why?

  32. 16 Tension causes what type of mountains to form? A Folding B Fault Block C Plateaus D Divergent

  33. LABEL THE FOOT WALL & HANGING WALL

  34. 17 What is this a picture of? A Folding Mountain B Fault Block Mountain C Plateau D Anticline

  35. 18 A large area of flat land elevbated above sea level is called a... A Folding Mountain B Fault Block Mountain C Plateau D Canyon

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