One main cause of creep is
A) melting of ice during a volcanic eruption.
B) oversteepening of a slope due to construction.
C) expansion and contraction of soils during freezing and thawing.
D) collapse due to weight of intense rains saturating the sediment.
Question 2
Which of the following scenarios best describes the creation of the lahars associated with the eruption of Mt. St. Helens in 1980?
A) Hot gases melted the volcano's snowcap, generating meltwater that mixed with ash.
B) A volcanic flank collapsed in a landslide, which flowed into Spirit Lake.
C) Ash deposited during the eruption was remobilized by a flood years later.
D) The eruption deposited fine ash in the Toutle River.
