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Interactive map. Earth’s Crust in Motion. Section 5-1. Earthquake. Shaking that results from rock movement below Earth’s surface. Stress. Stress. Force that acts on Earth’s crust to change its shape or volume. Shearing. One rock, Two directions. 3 kinds of stress. Tension. - PowerPoint PPT PresentationTRANSCRIPT
Interactive map
Earth’s Crust in Motion
Section 5-1
Earthquake
• Shaking that results from rock movement below Earth’s surface
Stress
Stress
• Force that acts on Earth’s crust to change its shape or volume
3 kinds of stress
1. Shearing• One rock,
Two directions.
3 kinds of stress2. Tension
• Stretches rock
3 kinds of stress
3. Compression• Squeezes rock
Let’s Review!!!
Fault
• Break in rock
• Caused by stress
• Slabs of crust slip past each other
• Usually occur at plate boundaries
3 kinds of FAULTS
1. Shearing → Strike-slip faults• Slip past
sideways, no vertical motion
• “Transform boundary” at plate boundaries
Strike-Slip Fault
Strike-Slip Fault
Strike-Slip Fault
Strike-Slip Fault
3 kinds of FAULTS
2. Tension → Normal faults
• At an angle
• Above fault = Hanging Wall (slips down↓↓)
• Below Fault = Footwall
Normal Fault
Normal Fault
Normal Fault
3 kinds of FAULTS
3. Compression → Reverse faults
• At an angle
• Hanging Wall (slips up↑↑↑)
Reverse Fault
Reverse Fault
Let’s Review1. What kind of fault?
2. What kind of stress?
Let’s Review1. What kind of fault?
2. What kind of stress?
Let’s Review1. What kind of fault? What kind of stress?
Homework: Read 5-1 Complete 5-1 R/R &
Enrich Due Friday