Chapter 14
List two forms of landslides __________ and _________.
translational, rotational
The rate at which rocks weathering depends on
All of the above
An example of chemical weathering is
karst topography
All processes that cause reduction and rearrangement of landforms are included in the term of
Denudation
The salt crystal growth is primarily found in arid environments.
T
The form that a landscape exhibits results from a balance between
All of the Above
Which of the following can lead of hillslope failure?
All of the Above
In reality, a landscdape behaves as an ______ system.
OPEN
When the rock is broken and disintergrated without dissolving, the process in operation is
Physical Weathering
A slow persistent mass movement of surface soil is called
Soil Creep
A slope is stable if its strength exceeds the weathering and erosion process.
T
_______ threshold is the point at which there is enough energy to overcome resistance against movements.
Geomorphic
Which of the following is true of joints
Only B and C are true
Other than the rock itself, the most important chemical substance needed for the majority of weathering processes is
Water
The disintegration and dissolving of surface and subsurface is called
Weathering
Landslides occur when
All of the above
Movement at the geomorphic threshold signals
A conversion of potential energy to kinetic energy
A landslide differs from a debris avalanche in that
A landslide moves more slowly than a debris avalanche
Physical weathering dominates in warm and wet climates.
F
On which part of a slope would rocks tend to fall at the highest speed?
Free Face
The Science that specifically studies the origin, evolution, form, and spatial distribution of landform is
Geomorphology
In which climates would rock be weathered to the greatest depth?
Hot and Wet
After a threshold is crossed, the landscape
adjust to a new equilibrium condition
The steepness of a slope made of loose material is called the
angle of repose
Chemical weathering is greatest under conditions of
higher mean annual rainfall and temperature
List three forms of physical weathering _______, ________, _______.
freeze-thaw action, salt-crystal growth, pressure-release jointing
Which of the following is true of spheroidal weathering?
it attacks the corners and edges of rocks
Exfoliation occurs because
overlaying rock is removed, thereby allowing the underlying rock mass to expand to expand and fracture
Uplift of the landscape creates _______ energy which is converted to _____ energy when materials begin to move downslope.
Potential; kinetic
In most areas, the upper surface of bedrock is partially weathered to broken-up rock called
Regolith
Human-induced mass movements produce a category of processes known as
Sacrifition
The angle of repose depends on the size and texture of the grains.
T
The pressure-release jointing is a physical weathering process that does not involve water.
T
The dynamic equilibrium model refers to
a balancing act between tectonic uplift and rates of denudation by weathering and erosion in a given landscape
