Plate Tectonics and Geological Processes

The video explores the forces that shape the Earth, focusing on plate tectonics and the movement of Earth's lithosphere. It explains how stress, including tension, compression, and shearing, affects rocks, leading to the formation of various landforms like mountains, trenches, and rifts. The video also discusses the concepts of strain and how rocks deform under stress, highlighting the differences between elastic and plastic strain.

What drives the movement of Earth's lithospheric plates?

• Gravity

• Convection currents in the mantle

• Magnetic fields

• Solar winds

Which type of stress pulls on the crust, making it thinner in the middle?

• Bending

• Shearing

• Compression

• Tension

What landforms are created by tension stresses under the ocean?

• Fault zones

• Volcanic arcs

• Mid-ocean ridges

• Ocean trenches

What is the process called when one plate is forced under another at a convergent boundary?

• Subduction

• Rifting

• Shearing

• Folding

Which mountain range is still growing due to continental collisions?

• The Himalayas

• The Andes

• The Alps

• The Rockies

What is a common misconception about the San Andreas Fault?

• It is inactive

• It is moving eastward

• It is a divergent boundary

• It is a single fault

What type of stress is responsible for the formation of transform faults?

• Bending

• Compression

• Tension

• Shearing

How does plastic strain affect rocks?

• It causes them to melt

• It makes them more elastic

• It permanently changes their shape

• It temporarily deforms them

What is the expected movement of Los Angeles relative to San Francisco over millions of years?

• Moving eastward

• Staying the same distance

• Moving closer together

• Moving further apart

What is the term for the change in shape of rocks caused by stress?

• Fracture

• Faulting

• Strain

• Erosion