Chapter 14

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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


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