Understanding Faults in Geology

The video explains the dynamic nature of Earth's tectonic plates and how their movement creates stress in rocks, leading to the formation of faults. It covers three main types of faults: strike-slip, normal, and reverse, detailing their characteristics and the stress types that cause them. The video also explains how to identify the hanging wall and foot wall in faults, and provides examples of where these faults occur.

What causes the formation of faults in the Earth's crust?

• Stress from tectonic plate movement

• Erosion by water

• Wind erosion

• Volcanic eruptions

What are the blocks of rock on either side of a fault called?

• Tectonic plates

• Fault blocks

• Fault lines

• Seismic waves

How can you identify the hanging wall in a fault?

• It is the block below the fault

• It is always on the left side

• It is always on the right side

• It is the block above the fault

What type of stress causes strike-slip faults?

• Compression

• Shear stress

• Tension

• Gravitational pull

Which famous fault is an example of a strike-slip fault?

• San Andreas Fault

• East African Rift

• Mid-Atlantic Ridge

• Himalayan Fault

In a normal fault, how does the hanging wall move relative to the foot wall?

• It moves sideways

• It stays stationary

• It moves down

• It moves up

What type of stress leads to the formation of normal faults?

• Shear stress

• Tension

• Compression

• Torsion

What is the main characteristic of a reverse fault?

• The fault line is horizontal

• The hanging wall moves up

• The foot wall moves up

• The hanging wall moves down

Which type of stress causes reverse faults?

• Gravitational pull

• Compression

• Shear stress

• Tension

Which mountain range is an example of reverse faults?

• San Gabriel Mountains

• Himalayas

• Andes Mountains

• Rocky Mountains