Chapter 15-Wind Processes

the grinding and shaping of rock surfaces by the "sand blasting" action of particles captured in the air is termed

abrasion

The removal and lifting of individual loose particles by the wind is termed

deflation

An extensive area of sand and sand dunes is known as a(n)

erg desert , or sand sea

The term eolian refers to

erosion, transportation, and deposition by the wind

for purpose of discussing eolian processes, the wind acts like a

fluid

the ability of the wind to move materials

is small compared to other transporting agents, such as water and ice.

what is not correct regarding loess

it has low binding strength

Which side of a dune typically has a slope angle equal to that of the angle of repose for sand?

leeward

Relative to dune movement and form, a dune's slipface forms on which side?

leeward side

Wind is ______ effective at eroding and transporting materials than other geomorphic agents because its density is ______ that of other geomorphic agents.

less; lower

what is not a general shape upon which scientists classify dunes

rectilinear

the smallest features shaped by individual saltating grains are

ripples

Pebbles can be moved by _____ in a process known as _______.

saltating particles; surface creep

what is not a correct reference to a desert pavement

sand seas

what is not correct regarding loess deposits?

they are formed of fine-grained clays and silts

the term used to describe rocks that are pitted, fluted or polished from eolian erosion is

ventifacts

Elongated, streamlined ridges aligned parallel to the most effective wind direction are called

yardangs

A depression created by deflation is known as a

blowout depression

Desert pavement refers to

surfaces of concentrated pebbles and gravels