Why are volcanos and earthquakes concentrated along this area?

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Presentation transcript:

Why are volcanos and earthquakes concentrated along this area? Warm-up What is the ring of fire? Why are volcanos and earthquakes concentrated along this area?

Faults

Fault- the surface along which rocks break and slide past one another.

Fault Types Normal faults- occur at divergent boundaries Reverse faults- occur at convergent boundaries Strike-slip – occur at transform plate boundaries Fault Types

Forces Tension- the force (stress) that occurs when forces act to stretch an object.

Forces Compression – the type of stress that occurs when an object is squeezed, such as when 2 tectonic plates collide.

Forces Shearing – causes a material to twist

Folding- the bending of rock layers due to stress Two main types of folds: Anticlines- upward arching folds Synclines- downward troughlike folds

Fault Model Answer all questions in complete sentences