Exam 8: Unstable Land

Walk around the campus or your neighborhood. Check out hillsides. Can you see evidence of creep or subsidence? See if you can identify how trees, power lines, roads, and sidewalks are affected by the Earth moving. Look for past evidence of the landslides. Do some areas appear to be on the move? Describe what you see.

What is avoidance?

Match the following options to its correct definition. -slump

Post-wildfire landslides can be very dangerous. Explain at least 2 ways that fires increase landslide hazards.

Match the following options to its correct definition. -cohesion

Which of the following factors can contribute to mass movement?

Creep is a faster mass wasting process than debris flows.

Earthquakes cannot trigger landslides.

Which of the following factors can help to stabilize unstable slopes?

Match the following options to its correct definition. -talus

What are some ways that engineering geologists are involved in landslide prevention?

Use the information provided in the illustration below to answer the following question(s). -What is the name of a landslide that occurs when rocks slide rapidly?

Explain in general terms why landslides occur. What factors influence slope stability?

Use the information provided in the illustration below to answer the following question(s). -What landsliding process is illustrated?

How have people contributed to landslide problems?

Increasing the water content of a slope can lead to instability.

What are some ways that the person could prevent a landslide from destroying their home?

The presence of curved tree trunks along steep slopes illustrates what mass wasting process?

Slump describes the very slow, downhill movement of soil and rocks.

Conditions that may result in a debris flow are: