1. Mountain formation

2. Bell ringer (write the question)
What are the three kinds of faults?
What type of stress is responsible for the creation of a strike slip fault?
What type of plate boundary do you find at a reverse fault?
What fault do you find at a divergent plate boundary?

3. Faulted What are the three kinds of faults?
Unit 2 Lesson 5 Mountain Building
Faulted
What are the three kinds of faults?
Sometimes rock is under so much stress that it breaks.
A crack called a fault forms when large blocks of rock break and move past each other.
The three main kinds of faults are strike-slip faults, normal faults, and reverse faults.
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4. What are the three kinds of faults?
Unit 2 Lesson 5 Mountain Building
What are the three kinds of faults?
In a strike-slip fault, the fault blocks move past each other horizontally.
Strike-slip faults form when rock is under shear stress, or stress that results from the sliding of rock structures in parallel but opposite directions.
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5. What are the three kinds of faults?
Unit 2 Lesson 5 Mountain Building
What are the three kinds of faults?
In a normal fault, the hanging wall moves down relative to the footwall.
Normal faults form when rock is under tension, which is stress that stretches or pulls rock apart.
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6. What are the three kinds of faults?
Unit 2 Lesson 5 Mountain Building
What are the three kinds of faults?
In a reverse fault, the hanging wall moves up relative to the footwall.
Reverse faults form when rocks undergo compression, which is stress that squeezes or pushes rock together.
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7. What are the three kinds of faults?
Unit 2 Lesson 5 Mountain Building
What are the three kinds of faults?
Which kind of fault is shown in each image?
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8. Moving on Up What are the three kinds of mountains?
Unit 2 Lesson 5 Mountain Building
Moving on Up
What are the three kinds of mountains?
Mountains can form through folding, volcanism, and faulting.
The process by which land rises or mountains form is called uplift.
Because tectonic plates are always in motion, some mountains are constantly uplifting.
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9. Most folded mountains form at convergent boundaries.
Folded mountains form when rock layers are squeezed together and pushed upward.
Most folded mountains form at convergent boundaries.
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10. Volcanic mountains
Volcanic mountains form when melted rock erupts onto Earth’s surface.
Most volcanic mountains form at convergent boundaries.
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11. Unit 2 Lesson 5 Mountain Building
Fault Block mountains
Fault-block mountains form when tension makes the lithosphere break into many normal faults.
Pieces of the lithosphere sink, and the blocks left standing are the mountains.
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