Exam 13: Unsafe Ground: Landslides and Other Mass Movements

Imagine you have just bought some property and notice that the trees on the slope have curved trunks.What type of landslide event do you likely have on your property?

Which of the following figures shows an area that would be most susceptible to slope failure?

Why would landslides be LESS likely to occur in areas that receive only moderate amounts of rainfall?

What type of mass movement would you expect to form in a slot canyon (steep-walled canyon)?

Construction workers often cut benches or terraces,such as those seen in the image below,along the sides of roads to help mitigate landslides.Why is this?

Unstable slopes start to move when the ________ force exceeds the ________ force that holds the material in place.

Some landslides include a mixture of loose sediment and debris called ________.

Explain why time is often the most effective landslide trigger.

________ are evidence of the toe of a landslide.

Which of the following situations may lead to slope failure?

Imagine you have just bought some property and notice that the trees on the slope have curved trunks.What would be the most effective method to prevent additional movement of the hillside?

The immediate cause of incidents of mass movement is ________.

A slope in a ________ environment would be much more likely to experience ________ and thus be more susceptible to slope failure.

Why does adding a small amount of water to a substance increase its cohesion but adding a lot of water decrease its cohesion?

Pick two ways of mitigating landslide hazards and describe how they work and what issues they may have?

Describe the factors that affect the resistance force and how they affect the stability of the slope.

________ is often a sign of mass movement.

Geologists distinguish among different types of mass wasting based on factors such as the ________ of the moving material and the rate of movement.

You are a geologist trying to determine if the slope on which your client's house sits is stable.You determine that the angle of repose of the hillside is 35 degrees.Which of the following situations would be considered stable?

________ consist(s)of large boulders placed at the base of slopes.