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Published byClarissa Strickland Modified over 9 years ago
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Faults
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Schedule Vocabulary Intro.10-15 minutes Fault Notes/Activity15-20 minutes Vocabulary Game10-15 minutes Compare Contrast Homework10 minutes Exit Ticket5 minutes
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Fault A fracture, or break, in Earth’s lithosphere, where movement occurs.
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Stress A force that presses on, pulls on, or pushes against another object.
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Earthquake The ground shaking caused by the sudden movement of large blocks of rock around a fault.
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Schedule Vocabulary Intro.10-15 minutes Fault Notes/Activity15-20 minutes Vocabulary Game10-15 minutes Compare Contrast Homework10 minutes Exit Ticket5 minutes
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What do you think caused this?
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Rocks move along faults Most faults are located along tectonic plate boundaries. Very little movement actually happens during an earthquake. Earthquake belt: 80% of earthquakes happen here Around the Pacific Ocean San Andreas fault North American Plate & Pacific Plate come together In California Earthquakes occur in the lithosphere
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San Andreas Fault
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How Faults are Classified 3 types of faults Normal fault Reverse fault Strike-slip fault Faults are named based off of how rock moves
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Normal Faults Stress that pulls rocks apart is what causes this fault. Tension forces Footwall moves upward Hanging wall moves downward
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Reverse Faults Caused by rock being pushed together Compression forces Footwall moves downward Hanging wall moves upward
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Strike-Slip Fault Rocks move side by side Caused by shearing forces
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So how do we get an earthquake? Pressure is applied to rocks Rocks bend and stretch Rocks exceed their elastic limit Rocks break, causing an earthquake
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Schedule Vocabulary Intro.10-15 minutes Fault Notes/Activity15-20 minutes Vocabulary Game10-15 minutes Compare Contrast Homework10 minutes Exit Ticket5 minutes
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Schedule Vocabulary Intro.10-15 minutes Fault Notes/Activity15-20 minutes Vocabulary Game10-15 minutes Compare Contrast Homework 10 minutes Exit Ticket5 minutes
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Schedule Vocabulary Intro.10-15 minutes Fault Notes/Activity15-20 minutes Vocabulary Game10-15 minutes Compare Contrast Homework10 minutes Exit Ticket5 minutes
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