Landform 4b
a sinkhole that developed over a period of hours or days and forms from a collapse through the roof of and underground cavern is known as
collapse sinkhole
if material is to move downslope, it must overcome the force of
friction, cohesion of particles and intertidal resistance
Extensive landscapes formed by the dissolution of limestone and other carbonate rock and characterized by pitted, bumpy surface topography, poor surface drainage, and well developed solutions channels are known as
karst topography
chemical weathering processes are particularly effective on limestone landscapes, forming
karst topography
Continuing dissolution and collapse may lead the coalescing of sinkholes to form a
karst valley
the weathering of limestone can create circular depressions known as
sinkholes
which of the following is not a class of mass movement
slip
A slow persistent mass movement of surface soil is called
soil creep
Plants are important to the development of karst primarily because
they supply organic acids that enhance the dissolution process.
Cones and cockpit karst develop in
wet tropical areas
which of the following human activities can contribute to mass movement?
any human disturbance of a slope, including road cuts, surface mining and development
although the news reports in january 2018 called montecito, cali disaster a "mudslide", parts of the flow behaved as a debris flow because
any of these chooses are correct. the "mudslide" was technically a mudflow with portions having like debris flow
which of the following is not necessary for well developed karst to develop
arid conditions
when rainwater attack's formations of limestone the minerals dissolve and wash away with the mildly acid rainwater. this is an example of
carbonation
Any large cave formed by chemical processes is a
cavern
A mass of falling and tumbling rock, debris, and soil traveling at a high velocity owing to the presence of ice or water is a
debris avalanche
the downslope movement of a body of material made up of soil, sediment, or rock propelled by the force of gravity is known as
mass movement
the mass movement process responsible of the curved growing pattern in the trees and the downsloping leaning of the utility post and fence is
soil creep
a slope is (blank) if it's strength exceeds denudation processes and (blank) if it's materials are weaker than denudation processes
stable; unstable
the presence of tali's slope indicated that (blank) occurs
rockfalls
which of the following can lead to slope failure that causes mass movement
saturation, oversteepening of slopes, earthquakes, and volcanic eruptions