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 stress
2. 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 Review
1. What kind of fault?
2. What kind of stress?
Let’s Review
1. What kind of fault?
2. What kind of stress?
Let’s Review
1. What kind of fault? What kind of stress?
Homework:
Read 5-1
Complete 5-1 R/R &
Enrich
Due Friday