week 13

The interaction between weathering and rock surface area is an example of

a positive feedback.

Which of the following would suggest the presence of soil creep?

a tilted retaining wall

Which of the following contributed to the massive 1959 Madison River landslide in Montana? Select all that apply.

an earthquake heavily-weathered material an oversteepened slope

What is the term for the combination of water with another substance to produce a new compound?

hydrolysis

Which of the following weathering processes does not involve water?

pressure-release jointing

Which physical weathering process produces rock features that are most similar to those due to spheroidal weathering?

pressure-release jointing

Which mass movement process is both the fastest and driest?

rockfall

Which weathering process is particularly common in arid climates?

salt crystal growth

The solution of limestone can create circular depressions on the landscape known as:

sinkholes

Which of the following is a common surface feature in limestone regions with little relief like Florida?

sinkholes

Which mass movement type is the slowest?

soil creep

Which of the following karst features is produced by precipitation, not solution? Select all that apply.

stalactites

Which of the following is necessary for the formation of well-developed karst landscapes? Select all that apply.

the presence of joints in the rock an aerated zone above the water table a high proportion of calcium carbonate in the rock

Which of the following accurately defines angle of repose?

the slope steepness at which driving and resisting forces are balanced

Humans rarely influence mass movement.

False

If you have a strong fear of sinkholes, you should move to Florida.

False

The pre-construction geologic analysis of the site for the Vajont Canyon, Italy reservoir suggested that the canyon walls were solid and would not be susceptible to mass movement.

False

Which of the following is the dominant weathering process involved in the development of karst topography?

carbonation

Which of the following karst features is produced by carbonation and solution, not precipitation?

caves

Which of the following are denudation processes? Select all that apply.

erosion weathering mass movement

If a mass movement event involves large quantities of water, what class does it belong to?

flow

Which of the following is a chemical weathering process?

hydration oxidation carbonation

Karst features are produced principally through chemical weathering.

true

Which of the following geomorphic processes must happen before a mass movement event can take place?

weathering