Types of Stress in Geology

The video tutorial explains the deformation of Earth's crust, primarily caused by plate tectonics. It describes the two types of crust: oceanic and continental. Stress, a force applied over an area, is discussed, including confining and differential stress. Differential stress is categorized into tensional, compressional, and shear stress, each affecting the Earth's crust differently. Tensional stress stretches rocks, forming valleys. Compressional stress results in mountain ranges like the Himalayas. Shear stress occurs when plates rub against each other, creating fault lines.

What is the primary cause of Earth's crust deformation?

• Volcanic eruptions

• Weathering

• Plate tectonics

• Erosion

Which of the following is NOT a type of Earth's crust?

• None of the above

• Mantle crust

• Continental crust

• Oceanic crust

What is confining stress?

• Stress that forms mountains

• Stress that causes earthquakes

• Stress applied unequally in different directions

• Stress applied equally in all directions

What type of stress occurs when force is not applied equally in all directions?

• Confining stress

• Balanced stress

• Uniform stress

• Differential stress

Which type of stress is responsible for the formation of valleys?

• Confining stress

• Tensional stress

• Compressional stress

• Shear stress

What type of stress leads to the formation of mountain ranges like the Himalayas?

• Shear stress

• Confining stress

• Compressional stress

• Tensional stress

What is the result of shear stress?

• Formation of valleys

• Creation of fault lines

• Formation of volcanic islands

• Development of oceanic trenches

Which stress type involves two plates rubbing against each other in opposite directions?

• Confining stress

• Tensional stress

• Compressional stress

• Shear stress