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Types of Stress

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Page 1: Types of Stress. Stress A stress is a force that acts on rocks to change its shape or volume The force adds energy to the rock until it breaks or changes

Types of Stress

Page 2: Types of Stress. Stress A stress is a force that acts on rocks to change its shape or volume The force adds energy to the rock until it breaks or changes

Stress

A stress is a force that acts on rocks to change its shape or volume

The force adds energy to the rock until it breaks or changes shape

Page 3: Types of Stress. Stress A stress is a force that acts on rocks to change its shape or volume The force adds energy to the rock until it breaks or changes

Causes

Unequal heating and cooling in the Earth’s mantle

Results in Earthquakes

Page 4: Types of Stress. Stress A stress is a force that acts on rocks to change its shape or volume The force adds energy to the rock until it breaks or changes

Shearing

Stress that pushes rock mass in two opposite directions.

Crust slides side by side

Evidence of this?

Page 5: Types of Stress. Stress A stress is a force that acts on rocks to change its shape or volume The force adds energy to the rock until it breaks or changes
Page 6: Types of Stress. Stress A stress is a force that acts on rocks to change its shape or volume The force adds energy to the rock until it breaks or changes

Tension

Pulls on the crust Stretching the rock so it is thinner in the middleCrust pulls apart

Page 7: Types of Stress. Stress A stress is a force that acts on rocks to change its shape or volume The force adds energy to the rock until it breaks or changes

Compression

Squeezes rock until it folds or breaks

Crust pushes together

Page 8: Types of Stress. Stress A stress is a force that acts on rocks to change its shape or volume The force adds energy to the rock until it breaks or changes
Page 9: Types of Stress. Stress A stress is a force that acts on rocks to change its shape or volume The force adds energy to the rock until it breaks or changes
Page 10: Types of Stress. Stress A stress is a force that acts on rocks to change its shape or volume The force adds energy to the rock until it breaks or changes

Rock has two options when these stresses are present

1. Rock Folds2. Rock breaks


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