Weathering, Erosion, and Sediment Transport

The video tutorial introduces the concept of erosion, focusing on how weathered rocks and sediments are transported by various agents such as gravity, water, wind, and glaciers. It explains the process of deposition, where sediments are dropped in new locations. The primary focus is on gravitational erosion, detailing different types of mass movements like rock falls, landslides, mudslides, and slumping. Factors influencing these movements, such as slope steepness and soil saturation, are discussed. The video concludes with a look at evidence of gravitational erosion and a preview of future topics.

What is the primary difference between weathering and erosion?

• Weathering involves water, while erosion involves wind.

• Weathering and erosion are the same processes.

• Weathering is the transportation of sediments, while erosion is the breakdown of rocks.

• Weathering involves the breakdown of rocks, while erosion involves the transportation of sediments.

Which of the following is NOT an agent of erosion?

• Running water

• Wind

• Gravity

• Fire

What happens to a river's ability to carry sediments when it reaches a large body of water?

• It remains the same.

• It decreases because it loses velocity.

• It increases due to higher velocity.

• It stops completely.

What is the process called when sediments are released and settled from an erosional system?

• Weathering

• Erosion

• Deposition

• Sedimentation

Which force is primarily responsible for the movement of rivers, glaciers, and wind?

• Magnetism

• Friction

• Gravity

• Centrifugal force

What term is used to describe large movements of rock and debris due to gravity?

• Sedimentation

• Mass movements

• Erosion

• Weathering

Which of the following is an example of a mass movement?

• River flow

• Rock fall

• Wind erosion

• Chemical weathering

What factor increases the likelihood of gravitational erosion?

• Steep slopes

• Dense vegetation

• Flat terrain

• Dry soil

How can heavy rainfall affect soil stability?

• It dries out the soil.

• It can cause the soil to become super saturated and flow.

• It has no effect on soil stability.

• It makes the soil more stable.

What are talus cones evidence of?

• Gravitational erosion

• River deposition

• Wind erosion

• Chemical weathering