# Chapter 5 pages Warm up Define deformation Exit

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Chapter 5 pages 82 - 93 Warm up Define deformation Exit
Explain how isostatic adjustment works Objectives We will be able to predict isostatic adjustments that will result from changes in the thickness of the earth’s crust. Homework Chapter 5 Vocabulary – Define terms – give a fact Read pages 82-93

Vocabulary Chapter 5; define and write sentence or draw
Deformation Isostasy Isostatic adjustment Stress Strain Compression Tension Shearing Folding anticline syncline Monocline Fault fracture Hanging wall footwall Normal fault Reverse fault Thrust fault Strike-slip fault Mountain belt Mountain range Mountain system Plateau Volcanic mountain Graben Folded mountain Dome mountain Fault-block mountain Fault PLane

California Science Content Standards Covered:
Plate tectonics operating over geologic time has changed the patterns of land, sea, and mountains on Earth's surface. As the basis for understanding this concept: 3C: Students know how to explain the physical properties of rocks based on the physical and chemical conditions in which they were formed, including plate tectonic processes

Objectives chapter 5.1 predict isostatic adjustments that will result from changes in the thickness of the earth’s crust. Identify sources of stress in crustal rock.

predict isostatic adjustments that will result from changes in the thickness of the earth’s crust.
The principle of isostatic adjustment When the crust becomes heavier, it sinks; when it becomes lighter, it rises Stress is the amount of force per unit area that is placed on a given materials. Stress causes strain Strain is a change in the shape or volume of rock

predict isostatic adjustments that will result from changes in the thickness of the earth’s crust.
Isostasy is the balancing of two forces Ex: Two block floating in the water When it comes to the Earth’s crust, a landform (e.g. a mountain, glacier) can cause the lithosphere to BEND – this bending is called an ISOSTATIC ADJUSTMENT

predict isostatic adjustments that will result from changes in the thickness of the earth’s crust.
As ISOSTATIC ADJUSTMENTS occur, the crust is bent – thus the DEFORMATION OF THE CRUST Examples: Mountain ranges, rivers, glaciers

Identify sources of stress in crustal rock.
2 causes of STRESS Isostatic Adjustment Tectonic Plate Movement Strain is the ACTUAL change in the shape of rocks, CAUSED by STRESS 3 types of STRAIN Compression – push together Tension – pull apart Shear – tear apart

Identify sources of stress in crustal rock.
The three main types of stress Compression – rocks squeezed together tension – rocks pulled apart shearing – rocks bent, twisted, broken apart. Contrast the isostatic adjustment that might result from the melting of glacial ice with the isostatic adjustment that a large river emptying into the ocean might cause

Plate Boundaries & The Stress of Strain

Objectives chapter 5.1 predict isostatic adjustments that will result from changes in the thickness of the earth’s crust. Identify sources of stress in crustal rock.

Vocabulary Chapter 5 Section 2
Folding anticline syncline Monocline Fault Fault fracture Hanging wall footwall Normal fault Reverse fault Thrust fault Strike-slip fault

Objectives chapter 5.2 Compare folding and faulting as responses to stress. Describe four types of faults.

Compare folding and faulting as responses to stress.
Folding is what results when rock responds to stress by permanently deforming without breaking Faulting is more likely to occur near the surface than deep within the earth Pressure are too high deep within the earth for faulting to occur Temperature allows the rock to flow more easily

Compare folding and faulting as responses to stress.
3 types of Folds Anticline Syncline Monocline

Describe four types of faults.
Normal: Reverse fault: Thrust fault: Strike-slip fault:

Describe four types of faults.
Normal Fault Reverse Fault

Describe four types of faults.
Thrust Fault Strike-slip Fault

Objectives chapter 5.2 Compare folding and faulting as responses to stress. Describe four types of faults.

Vocabulary Chapter 5 Section 3
Mountain belt Mountain range Mountain system Plateau Volcanic mountain Graben Folded mountain Dome mountain Fault-block mountain

Objectives chapter 5.3 Identify the types of plate collisions that build mountains. Identify four types of mountains and discuss the forces that shaped them.

Identify the types of plate collisions that build mountains.
3 Different Types of Plate Collisions Oceanic-Oceanic An oceanic plate subducts below an oceanic plate. The water trapped under pressure melts part of the subducting lithosphere. This magma rises on the ocean floor forming an island arch of Volcanoes. Japan, Fiji, and Mariana are all examples.

Identify the types of plate collisions that build mountains.
3 Different Types of Plate Collisions Oceanic-Continental Oceanic plate is subducted under a continental plate. this causes large scale compression, form large mountains. there is some melting of the subducting plate, that may produce volcanic mountains. Some mountains may have been formed from micro-terranes.

Identify the types of plate collisions that build mountains.
3 Different Types of Plate Collisions Continental-Continental When continental plate is subducted under another continental plate. Large scale compression forms extremely high mountains, Himalayas. Region is prone to large earthquakes.

Chapter 5.3 Notes Name the four types of mountains and explain how each is formed Folded- Fault block- Volcanic- Dome-

Identify four types of mountains and discuss the forces that shaped them.
Folded Moutains Tectonic plates collide, raising Mtns and large flat areas called plateaus Ex: Himalayas

Identify four types of mountains and discuss the forces that shaped them.
Fault-Block Mtns & Grabens Mtns formed when the crust breaks into pieces allowing blocks to sink relative to others

Identify four types of mountains and discuss the forces that shaped them.
Volcanic Mountain Formation Mtns that form when molten rock erupts ONTO the crust of the Earth

Identify four types of mountains and discuss the forces that shaped them.
Dome Mountain Formation Mountains that form when molten rock does not erupt onto the crust of the Earth

Objectives chapter 5.3 Identify the types of plate collisions that build mountains. Identify four types of mountains and discuss the forces that shaped them.