Multiple Choice
Clays play a role in land subsidence by ____.
A) weighing down organic material and compacting it, causing subsidence
B) swelling and causing runoff and subsidence in adjacent areas
C) absorbing moisture to counteract subsidence
D) blocking the absorption of groundwater by the aquifer, making subsidence likely downstream
E) collapsing into compact layers when dried, increasing subsidence
Correct Answer:
Verified
Correct Answer:
Verified
Q1: Swelling soils are typically due to _.<br>A)kaolinite
Q2: Ground settling from thaws is only found
Q4: In addition to limestone, evaporites like _
Q5: Rainwater becomes acidic as it dissolves limestone.
Q6: The decomposition of peat layers in soils
Q7: Thawing permafrost _.<br>A)creates problems for oil pipelines,
Q8: The level to which _ rises in
Q9: Limestone consists of rock made from _.<br>A)carbon
Q10: _ clay is most involved with swelling
Q11: Soils with a high smectite clay composition